KINDAI UNIVERSITY


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SAKAGUCHI Tatsuhiko

Profile

FacultyDepartment of Informatics
PositionAssociate Professor
DegreeDr. Eng.
Commentator Guidehttps://www.kindai.ac.jp/meikan/2384-sakaguchi-tatsuhiko.html
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Last Updated :2020/09/01

Education and Career

Education

  •   1996 04  - 2000 03 , Osaka Prefecture University, Faculty of Engineering
  •   2000 04  - 2002 03 , Osaka Prefecture University, Graduate School of Engineering
  •   2002 04  - 2004 12 , Osaka Prefecture University, Graduate School of Engineering

Academic & Professional Experience

  •   2020 04 ,  - 現在, Graduate School of Engineering Department of Mechanical Engineering, Toyohashi University of Technology
  •   2020 04 ,  - 現在, Assistant Professor, Faculty of Engineering, Department of Informatics, Kindai University
  •   2007 04 ,  - 2009 03 , Assistant Professor, Organization of Advanced Science and Technology, Kobe University
  •   2005 01 ,  - 2007 03 , Graduate School of Science and Technology, Kobe University

Research Activities

Research Areas

  • Social infrastructure (civil Engineering, architecture, disaster prevention), Safety engineering
  • Social infrastructure (civil Engineering, architecture, disaster prevention), Social systems engineering
  • Informatics, Mechanics and mechatronics
  • Informatics, Robotics and intelligent systems
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Manufacturing and production engineering

Research Interests

  • Industrial systems engineering, Supply chain management, Optimization, Scheduling, Production management, Manufacturing Execution System, Production Scheduling

Published Papers

  • Nesting Scheduling in Sheet Metal Processing Based on Coevolutionary Genetic Algorithm in Different Environments., Tatsuhiko Sakaguchi, Kohki Matsumoto, Naoki Uchiyama, IJAT, IJAT, 12(5), 730 - 738, 2018 , Refereed
  • Proposal for Sleep Apnea Syndrome discriminating method and discovery process pre-SAS., SHIRASUNA Miyori, ZHANG Zhong, TODA Hiroshi, ISHIKAWA Yasuhiro, SAKAGUCHI Tatsuhiko, AKIDUKI Takuma, Transactions of the JSME (in Japanese), Transactions of the JSME (in Japanese), 2018 , Refereed
    Summary:<p>This paper presents a discrimination method of Sleep Apnea Syndrome (SAS) and early detection of potential Sleep Apnea Syndrome (Pre-SAS) using sleep breath sound, by which each subject can take the required data for the diagnosis at home only with a voice recorder. Sleep breath sound of around two hours is analyzed statistically for detecting SAS patients. Long silence sections in the sleep breath sound and the biggest sound pressure typically occurred after them are compared for distinguishing Pre-SAS, SAS patients and non-patients. The k-means method is applied for classifying the above sound data. The proposed method drastically reduces the time and effort required for SAS diagnosis compared to the current medical approaches. Experimental results show the effectiveness of the proposed method, by which 100 % accuracy of discrimination is achieved.</p>
  • A hybrid metaheuristic for scheduling problem in sheet metal processing, 阪口龍彦, 田中達也, 清水良明, 内山直樹, 日本機械学会論文集(Web), 日本機械学会論文集(Web), 83(848), ROMBUNNO.16‐00333(J‐STAGE) - 234, 2017 , Refereed
  • A Proposal of Post-optimal Analysis for Many-objective Optimization Problems: Deployment in Multi-objective Optimizer MOON2/MOON2R, 清水良明, YOO Jae‐Kyu, 阪口龍彦, 進化計算学会論文誌(Web), 進化計算学会論文誌(Web), 7(1), 11, 2016 , Refereed
  • Genetic Algorithm Based Nesting Method with Considering Schedule for Sheet Metal Processing (「フレキシブル・オートメーション」総合特集号), 阪口 龍彦, 大谷 隼人, 清水 良明, システム制御情報学会論文誌 = Transactions of the Institute of Systems, Control and Information Engineers, システム制御情報学会論文誌 = Transactions of the Institute of Systems, Control and Information Engineers, 28(3), 99 - 106, Mar. 2015 , Refereed
  • Deployment of sustainable logistics optimization incorporated with modal shift and emission trading on carbon dioxide, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Hiroki Shimada, Toward Sustainable Operations of Supply Chain and Logistics Systems, Springer, Toward Sustainable Operations of Supply Chain and Logistics Systems, Springer, 2015 , Refereed
  • Study on nesting scheduling for sheet metal processing (Improvement of nesting method by parts reallocation), 阪口龍彦, 松本昂樹, 清水良明, 日本機械学会論文集(Web), 日本機械学会論文集(Web), 81(825), 14-00640(J-STAGE), 2015 , Refereed
  • A Meta-heuristic Approach for VRP with Simultaneous Pickup and Delivery Incorporated with Ton-Kilo Basis Saving Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Logistics Operations, Supply Chain Management and Sustainability, Logistics Operations, Supply Chain Management and Sustainability, 2014 , Refereed
  • A Hierarchical Hybrid Meta-Heuristic Approach to Coping with Large Practical Multi-Depot VRP, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Industrial Engineering & Management Systems, Industrial Engineering & Management Systems, 2014 , Refereed
  • A Hybrid Meta-heuristic Method for Optimizing Logistic Networks Subject to Operational Conditions in Practice, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Syota Tsuchiya, Global Perspective on Engineering Management, Global Perspective on Engineering Management, 2013 , Refereed
  • Generalized Vehicle Routing Problem for Reverse Logistics Aiming at Low Carbon Transportation, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Industrial Engineering & Management Systems, Industrial Engineering & Management Systems, 2013 , Refereed
  • Vehicle Routing Problem Targeting CO2 Reduction under Cost Minimization Strategy, Y. Shimizu, T. Sakaguchi, M. K. Gu, International Journal of Logistics and SCM Systems, International Journal of Logistics and SCM Systems, 2012 , Refereed
  • Multi-Objective Analysis Applied to Mixed-Model Assembly Line Sequencing Problem through Elite Induced Evolutionary Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Theerayoth Pralomkarn, Proc. 5th Int. Symp. on Scheduling, Proc. 5th Int. Symp. on Scheduling, 29 - 34, Jul. 2011 , Refereed
  • Scheduling Based Collision Avoidance for Multitasking Machine, Sakaguchi Tatsuhiko, Shimauchi Toshiaki, Shirase Keiichi, SERVICE ROBOTICS AND MECHATRONICS, SERVICE ROBOTICS AND MECHATRONICS, 313 - +, 2010 , Refereed
  • Dynamic Controls of Genetic Algorithm Scheduling in Supply Chain., Jia Yee Chai, Tatsuhiko Sakaguchi, Keiichi Shirase, IJAT, IJAT, 4(2), 169 - 177, 2010 , Refereed
  • Development of Virtual Machining Simulator by Using Voxel Model, NAKAMOTO Keiichi, KOUNO Tomoyuki, KOYAMA Tomo, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Journal of the Japan Society of Precision Engineering, Journal of the Japan Society of Precision Engineering, 74(12), 1308 - 1312, Dec. 2008 , Refereed
    Summary:In order to prepare a reliable NC program, which can avoid cutting troubles and achieve high machining productivity and accuracy, a sophisticated cutting process simulator is required to previously predict the target cutting operation. However, a conventional simulator using Z-map or B-rep model for representation of geometrical cutting shapes has the problem to treat geometrical cutting shapes which have overhang shapes or consist of successive tiny surfaces. Hence, in this study, voxel model is applied to predict the changes of geometrical cutting shape during the cutting operation. Voxel model generally expends large memory volume, therefore the octree data structure of voxels is adopted to reduce the memory consumption and improve the accuracy to represent complicated three-dimensional objects. Additionally, the developed cutting force simulator is integrated to the geometrical cutting shape simulator to predict cutting forces before the cutting operation. Cutting forces can be predicted by the cutting force simulator using cutting parameters such as depths of cut and stepover detected by the geometrical cutting shape simulator.
  • GA based reactive scheduling for aggregate production scheduling, Sakaguchi Tatsuhiko, Kamimura Toshihide, Shirase Keiichi, Tanimizu Yoshitaka, MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER, MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER, 275 - +, 2008 , Refereed
  • Penalty distribution method for scheduling based supply chain management, Chai Jia Yee, Sakaguchi Tatsuhiko, Shirase Keiichi, MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER, MANUFACTURING SYSTEMS AND TECHNOLOGIES FOR THE NEW FRONTIER, 261 - +, 2008 , Refereed
  • Reactive Scheduling Based Multi Objectives Negotiation for Dynamic Supply Chain Model, CHAI Jia Yee, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Proceedings of the 4th International Conference on Leading Edge Manufacturing in 21st Century, Proceedings of the 4th International Conference on Leading Edge Manufacturing in 21st Century, 655-660, Nov. 2007 , Refereed
  • Multi-objective reactive scheduling based on genetic algorithm, Tanimizu Yoshitaka, Miyamae Tsuyoshi, Sakaguchi Tatsuhiko, Iwamura Koji, Sugimura Nobuhiro, TOWARDS SYNTHESIS OF MICRO - /NANO - SYSTEMS, TOWARDS SYNTHESIS OF MICRO - /NANO - SYSTEMS, (5), 65 - +, 2007 , Refereed
  • Genetic Algorithm Based Reactive Scheduling : 2nd Report, Modification of Production Schedule for Additional Jobs, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, Transactions of the Japan Society of Mechanical Engineers. C, Transactions of the Japan Society of Mechanical Engineers. C, 71(711), 3299 - 3305, Nov. 2005 , Refereed
    Summary:A systematic scheduling method is required to modify the predetermined production schedules in order to cope with unforeseen changes in manufacturing systems. The objective of the present research is to propose a scheduling method based on GA (Genetic Algorithm) for modifying delayed production schedules due to the additional jobs, reactively. A prototype of reactive scheduling system is developed and applied to scheduling problems. The effectiveness of the proposed method is verified through the numerical expreriments of the reactive scheduling problems.
  • Improvement of crossover operator in genetic algorithm for reactive scheduling, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, MIYAMAE Tsuyoshi, MAEDA Yasuhiro, SHIRASE Keiichi, SUGIMURA Nobuhiro, Proc. of the 3rd international conference on leading edge manufacturing in 21st century, Proc. of the 3rd international conference on leading edge manufacturing in 21st century, 427-432, Oct. 2005
  • Genetic Algorithm Based Reactive Scheduling : 1st Report, Modification of Production Schedule for Delays of Manufacturing Processes, TANIMIZU Yoshitaka, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, Transactions of the Japan Society of Mechanical Engineers. C, Transactions of the Japan Society of Mechanical Engineers. C, 69(685), 2458 - 2463, Sep. 2003 , Refereed
    Summary:A systematic method is eagerly required to modify the predetermined production schedules in order to cope with unforeseen changes in manufacturing systems, such as delays of manufacturing processes. The objective of the present research is to propose a scheduling method based on GA (Genetic Algorithm) for modifying delayed production schedules reactively. A prototype of reactive scheduling system is developed and applied to scheduling problems. The effectiveness of the proposed method is verified through the comparison of the experimental results of the reactive scheduling with the ones of the rule-based real-time scheduling.
  • Velocity control of a mechanical system with a spring-based regenerative brake for energy saving in industrial applications, Takahiro Sakuraba, Naoki Uchiyama, Shigenori Sano, Tatsuhiko Sakaguchi, International Review of Automatic Control, International Review of Automatic Control, 12(1), 31 - 41, 2019 , Refereed
    Summary:© 2019 Praise Worthy Prize S.r.l. - All rights reserved. Since global environmental and energy resource exhaustion problems are becoming more serious, hybrid vehicles equipped with a regenerative system composed of an electric motor and a battery are attracting attention. However, the application of this type of system to personal mobility or industrial machines is difficult due to their smaller mass compared to vehicle systems; in order to mitigate this, authors have developed a new type of regenerative system using a spiral spring. This paper proposes a robust speed controller design using a disturbance observer in order to achieve the desired motion for industrial applications, and to analyze the regenerative efficiency of the proposed system. Experimental results show that the proposed system can provide energy saving of approximately 39% and it can improve the ability to follow the target velocity trajectory. Copyright © 2019 Praise Worthy Prize - All rights reserved.
  • Design and Experimental Verification of a Wheeled Mobile System with a Spring-Based Regenerative Brake, Takahiro Sakuraba, Naoki Uchiyama, Shigenori Sano, Tatsuhiko Sakaguchi, JOURNAL OF ADVANCED COMPUTATIONAL INTELLIGENCE AND INTELLIGENT INFORMATICS, JOURNAL OF ADVANCED COMPUTATIONAL INTELLIGENCE AND INTELLIGENT INFORMATICS, 21(4), 751 - 759, Jul. 2017 , Refereed
    Summary:In human-operated mechanical systems such as automobiles, electric bicycles, and electric wheelchairs, energy saving is an important criterion. Hybrid systems consisting of combustion engines and electricmotors have found successful applications in automobiles. However, it is difficult to apply this type of hybrid system to personal mobilities and industrial machines in a factory, as there is a requirement to reduce their energy consumption owing to recent environmental and energy resource problems. Therefore, a previous study has focused on the use of a mechanical spring as a regenerative brake in a hybrid bicycle. This study, however, presents a new type of hybrid system that includes the use of a mechanical spring. An experimental wheeled mobile system is designed, and its effectiveness is confirmed through comparative experiments in which a reduction of more than 30% in the consumed energy is achieved in acceleration periods as compared to a conventional system.
  • A hybrid method for solving multi-depot VRP with simultaneous pickup and delivery incorporated with Weber basis saving heuristic, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Jae-Kyu Yoo, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 10(1), 2016 , Refereed
    Summary:Under growing concerns with sustainability in global and changing market, establishing a cooperative and competitive logistic is becoming a keen issue to provide manufacturing systems amenable to sales and operations planning. As a deployment for such practice, we have engaged in the various studies on logistics optimization. Especially, noticing that transportation cost and/or CO2 emission actually depend not only on distance but also loading weight (Weber basis), we have recently developed a few hybrid meta-heuristic methods for vehicle routing problems (VRP) and shown their effectiveness through numerical experiments. To the best of our knowledge, however, there exist no studies that take the Weber basis into account on VRP except for ours. As a hot interest in this area, we pay our attention on VRP with simultaneous pickup and delivery (VRPSPD). Then, this study attempts to extend the foregoing Weber basis study under single depot to multi-depot problem and intends to reveal some properties of VRPSPD. To work with such concerns, we have developed a novel hierarchical method comprised of a modified tabu search, a graph algorithm for the minimum cost flow problem and a Weber basis saving method. The proposed method is possible to solve various real world applications practically even with large problem sizes. Finally, the effectiveness of the proposed method is validated through numerical experiments taken place from various viewpoints to discuss about some peculiar features of VRPSPD.
  • Multi-objective optimization for creating a low-carbon logistics system through community-based action, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Hiroki Shimada, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 9(5), 2015 , Refereed
    Summary:Against global warming and environmental degradation, it is essential for modern logistics to make sincere efforts to resolve such environmental issues. However, that will likely degrade the economical efficiency under global competition. In fact, since it seems almost impossible to derive a reasonable solution individually, we need to face with the problem as whole society. Deployment of a green logistics incorporated with community-based action is a new paradigm realizing an infrastructure aligned with sustainable development. Noticing importance of such idea, this study concern a green logistics optimization associated with production methods of manufacturers and green attitude of consumers. Actually, for a three-echelon logistics network, we have developed a novel hierarchical method to optimize the production methods with different structures regarding cost and emission of carbon dioxide (CO2) at production sites, the available collection center, the paths between members of the logistics network and circular routes over consumers. In this problem, first we aim at minimizing either total cost or CO2 emission through controlling prone and aversion behaviors on sustainability of each logistic member. Then, to integrate these individual problems and evaluate them on the same basis, we have introduced an economic mechanism known as emission trading rate on CO2. Moreover, to discuss the sustainability in a broader logistics system, we note the modal shift in transportation. To show the significance of the proposed approach, we provide a case study and explore some prospects for community-based green logistics.
  • Parallel computing for huge scale logistics optimization through binary PSO associated with topological comparison, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Takatobu Miura, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 8(1), 5 - 5, 2014 , Refereed
    Summary:To cope with extremely large-scale logistic optimization for strategic planning and real time operational optimizations as well. in this paper, WC have proposed an extended algorithm of our hybrid method so that it becomes available for parallel computing. We have also developed a novel algorithm of particle swarm optimization (PSO) associated with binary decision variables. It is quite effective for finding the optimum opening distribution centers in three-echelon logistic network by parallel computing. Eventually, we have implemented the procedure in the parallel algorithm deployed as a multi-population based approach using multi-thread programming technique. Taking to topologies belonging to a coarse grain parallelism, we compared their effects on the performance of the algorithm through large scale logistics optimization Finally, we confirmed that the proposed method can bring about high performance for the parallel computing that is suitable for the present goal and circumstance through numerical experiments.
  • A selective approach on data based quality prediction for quenched and tempered steel reinforcement bars, Ram Chandra Poudel, Tatsuhiko Sakaguchi, Yoshiaki Shimizu, Journal of Chemical Engineering of Japan, Journal of Chemical Engineering of Japan, 46(4), 294 - 301, 2013 , Refereed
    Summary:In the process of rolling of Quenched and Tempered (Q& T) reinforcement bars, it is required for bars to obtain both good strength and elongation properties. Many parameters associated with the raw material and process affect the final properties of bars. In industry, destructive tests cannot be performed frequently to measure the final properties of bars. This study is an attempt to investigate the usefulness of various computational methods in the design of data based quality prediction models for Q& T reinforcement bars. To work with the problem, twelve parameters related to the raw material and process were selected as inputs and three features as outputs. Then, multiple linear regression, principal components regression, partial least squares regression, artificial neural networks and locally weighted regression were sequentially implemented to construct prediction models. In advance, to increase the prediction quality, we have proposed a selective approach which has three different modules. Two of the three select the proper models through pre-screening the process in terms of the similarity of the query to the pre-determined clusters. The third approach tries to incorporate the local correction from the value predicted by global linear model. For the collected data from two real industries, the proposed selective approach outperformed the five individual prediction models in overall comparison. © 2013 The Society of Chemical Engineers, Japan.
  • Multi-Objective Sequencing Optimization for Mixed-Model Assembly Line Considering Due-Date Satisfaction, Yoshiaki Shimizu, Toshiya Waki, Tatsuhiko Sakaguchi, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 6(7), 1057 - 1070, 2012 , Refereed
    Summary:To meet higher customer satisfaction and shorter production lead time under rapidly changing demands and global competition, importance of just-in-time and agile manufacturing is raising much more attentions than before. To cope with such circumstances, assembly line is shifting to mixed-model assembly line. Under such situation, it is essential to extend system boundary wider and resolve the problem totally. Moreover, in this study, we pay our attention to the latest production manner applied in car industry and extend our conventional model associated with due dates of finished products. Finally, we have formulated a bi-objective optimization problem that aims at reducing total sum of tardiness and total volume of inventories at the same time. Besides the usual one-through approach to solve the resulting problem, we adopt a two stage approach associated with multi-objective analysis. To reveal some properties of the proposed approaches, we provide a case study and discuss effectiveness of the method and usefulness of the results.
  • Multi-Objective Analysis Applied to Mixed-Model Assembly Line Sequencing Problem through Elite Induced Evolutionary Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Theerayoth Pralomkarn, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 6(5), 647 - 660, 2012 , Refereed
    Summary:To meet higher customer satisfaction and shorter production lead time, assembly lines are shifting to mixed-model assembly lines. Accordingly, sequencing is becoming an increasingly important operation scheduling that directly affects on efficiency of the entire process. In this study, such sequencing problem at the mixed-model assembly line has been formulated as a bi-objective integer programming problem so that decision making through trade-off analysis can bring about significant production improvements. Then we have developed a multi-objective analysis method by hybridizing conventional and recent meta-heuristic methods. After showing its generic idea, the car mixed-model assembly line sequencing problem is concerned as a case study. Certain measures are also introduced to quantitatively evaluate the performances of the method through comparison.
  • A Framework of Multi Objectives Negotiation for Dynamic Supply Chain Model, Jia Yee Chai, Tatsuhiko Sakaguchi, Keiichi Shirase, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 4(2), 457 - 468, 2010 , Refereed
    Summary:Trends of globalization and advances in Information Technology (IT) have created opportunity in collaborative manufacturing across national borders. A dynamic supply chain utilizes these advances to enable more flexibility in business cooperation. This research proposes a concurrent decision making framework for a three echelons dynamic supply chain model. The dynamic supply chain is formed by autonomous negotiation among agents based on multi agents approach. Instead of generating negotiation aspects (such as amount, price and due date) arbitrary, this framework proposes to utilize the information available at operational level of an organization in order to generate realistic negotiation aspect. The effectiveness of the proposed model is demonstrated by various case studies.
  • Computational Simulation for Decision of Scheduling Period in Reactive Scheduling, Tatsuhiko Sakaguchi, Toshihide Kamimura, Keiichi Shirase, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 2(4), 753 - 761, 2008 , Refereed
    Summary:Unexpected disruptions often occur in the manufacturing systems. The manufacturing systems cannot execute the manufacturing operations in accordance with the predetermined production schedule due to such disruptions. Therefore, a systematic scheduling method is required to cope with such disruptions. In this research, distribution of processing time is described with the normal distribution. The reactive scheduling method for distribution of processing time is proposed in order to modify the predetermined production schedule. And the suitable re-scheduling period is considered through the computational experiments.

Conference Activities & Talks

  • Design and Experimental Verification of a Regenerative Brake System with a Spiral Spring and Gears, Yuto Arai, Takahiro Sakuraba, Shigenori Sano, Tatsuhik Sakaguchi, Naoki Uchiyama, Proceedings of the 2019 IEEE/SICE International Symposium on System Integration, SII 2019,   2019 04 25
    Summary:? 2019 IEEE. Energy regenerative systems consisting of a combustion engine and an electric motor are widely used mainly for automobiles. However it is difficult to apply this type of hybrid system to personal mobilities and industrial machines in a factory, and thus the authors have developed a new type of regenerative brake systems. This study proposes a regenerative brake system using a spiral spring and magnetic gears or planetary gears instead of using an electric motor and a battery. Experimental results demonstrate the characteristic and effectiveness of the proposed systems, in which the regenerative ratio of approximately 30% with magnetic gears and 47% with planetary gears is confirmed.
  • Environment-adaptive GA based Nesting Scheduling for Sheet Metal Processing, Tatsuhiko Sakaguchi, Ryo Ishii, Naoki Uchiyama, 2018 International Symposium on Flexible Automation,   2018 07
  • 入所型介護施設を対象としたRPG型介護計画手法の研究, 阪口龍彦, 緒方俊治, 内山直樹, 日本機械学会生産システム部門研究発表講演会2018講演論文集,   2018 03
  • Time and Energy Optimal Motion Trajectory Smoothing for Industrial Machines, Nshama William Enock, Shirasuna Miyori, Sakaguchi Tatsuhiko, Uchiyama Naoki, Proceedings of the Japan Joint Automatic Control Conference,   2018
  • Generation of Energy Optimal S-Curve Motion Trajectory for Industrial Machines, Harada Shogo, Izumi Ryosuke, Shirasuna Miyori, Sakaguchi Tatsuhiko, Uchiyama Naoki, Proceedings of the Japan Joint Automatic Control Conference,   2018
  • Iterative Learning Control of Industrial Machines Based on Contouring Error Estimation and NC Program Modification, Hendrawan Muldani Yogi, Shirasuna Miyori, Sakaguchi Tatsuhiko, Uchiyama Naoki, Proceedings of the Japan Joint Automatic Control Conference,   2018
  • Generation of Energy Optimal Contouring Motion Trajectory for Industrial Machines, Nakagawa Masaru, Izumi Ryosuke, Shirasuna Miyori, Sakaguchi Tatsuhiko, Uchiyama Naoki, Proceedings of the Japan Joint Automatic Control Conference,   2018
  • A heuristic method for rectangular plate stacking problem, MORIYA Mitsutaka, SAKAGUCHI Tatsuhiko, UCHIYAMA Naoki, The Proceedings of Mechanical Engineering Congress, Japan,   2018
    Summary:

    Rectangular plate stacking problem is to determine the position of the rectangular plate in the designated area for minimizing the stacking height. In this study, we propose a heuristic method for solving the rectangular plate stacking problem. In our method, we combine the bottom left algorithm and the rule-based balancing algorithm is applied in order to decide the position of rectangular plates without plates falling down to the lower stages. The effectiveness of proposed method was validated through computational experiments.

  • Experimental Comparison of Contouring Performance and Consumed Energy between Adaptive versus Non-Adaptive Controllers for an Industrial Machine, Masaki Oda, Naoki Uchiyama, Tatsuhiko Sakaguchi, IEEE 1st International Conference on Industrial Electronics for Sustainable Energy Systems,   2018 01
  • ぜんまいによるブレーキ回生機構を用いた車輪移動装置の速度制御, 櫻庭崇紘, 内山直樹, 阪口龍彦, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM),   2017 12 20
  • Coevolutionary Genetic Algorithm Based Nesting Scheduling for Sheet Metal Processing, Tatsuhiko Sakaguchi, Kohki Matsumoto, Naoki Uchiyama, The 9th Leading Edge Manufacturing in 21st Century,   2017 11
  • A Concurrent Negotiation Framework for Multi-client in Two Echelon Supply Chain, Tatsuhiko Sakaguchi, Van Tu Tran, Naoki Uchiyama, International Design and Concurrent Engineering 2017 & Manufacturing Systems Conference 2017,   2017 09
  • 階層分散型生産システムのための作業時間の推定に基づくスケジューリング手法の研究, 小熊和真, 阪口龍彦, 内山直樹, 日本機械学会2017年度年次大会講演論文集,   2017 09
  • 精密板金加工のためのハイブリッド型スケジューリング手法の研究, 阪口龍彦, 守屋光崇, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2017 03 15
  • ぜんまいによるブレーキ回生機構を用いた車輪移動装置の制御と実験検証, 櫻庭崇紘, 内山直樹, 阪口龍彦, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM),   2016 12 15
  • 精密板金加工のための部品構成を考慮した遺伝的アルゴリズムによるスケジューリング, 石井涼, 阪口龍彦, 内山直樹, スケジューリング・シンポジウム講演論文集,   2016 09 24
  • A Scheduling Method Using Genetic Algorithm and Dispatching Rule for Sheet Metal Processing, Tatsuhiko Sakaguchi, Tatsuya Tanaka, Yoshiaki Shimizu, Naoki Uchiyama, 2016 International Symposium on Flexible Automation,   2016 08
  • 精密板金加工のためのディスパッチングルールと遺伝的アルゴリズムを用いたスケジューリング手法の研究, 阪口龍彦, 田中達也, 清水良明, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2016 03 11
  • 入所型介護施設のための介護士の負荷平準化を考慮した日程計画および介護士割当手法の研究, 阪口龍彦, 梅村良佑, 清水良明, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2016 03 11
  • 2階層サプライチェーンにおける複数顧客との交渉を考慮した並列意思決定フレームワークの検討, 阪口龍彦, TU Tran Van, 清水良明, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2016 03 11
  • 階層分散型生産システムにおける要素間のジョブの授受を考慮したスケジューリング手法の研究, 阪口龍彦, 鈴木悠馬, 清水良明, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2016 03 11
  • 精密板金加工のための共進化遺伝的アルゴリズムを用いたネスティング・スケジューリングの研究, 阪口龍彦, 松本昂樹, 清水良明, 内山直樹, 日本機械学会生産システム部門研究発表講演会講演論文集,   2016 03 11
  • ぜんまいによるブレーキ回生機構を用いた移動装置の設計と実験検証, 櫻庭崇紘, 内山直樹, 佐野滋則, 阪口龍彦, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM),   2015 12 14
  • 4ロータヘリコプタによる壁面点検システムの提案と実験検証, 田村慶太, 内山直樹, 佐野滋則, 阪口龍彦, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM),   2015 12 14
  • A Hybrid Approach for Multi-Depot VRPSPD Incorporated with Weber Basis Saving Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Jae-Kyu Yoo, Asia Pacific Industrial Engineering & Management Systems Conference 2015,   2015 12
  • A Study on Scheduling Method for Hierarchical and Decentralized Manufacturing Systems, Tatsuhiko Sakaguchi, Yuma Suzuki, Yota Naraki, Yoshiaki Shimizu, International Symposium on Scheduling 2015,   2015 07
  • 精密板金加工のためのネスティング・スケジューリングの研究―ディスパッチングルールとローカルサーチの融合によるスケジューリング手法の改良―, 阪口龍彦, 大谷隼人, 清水良明, 日本機械学会生産システム部門研究発表講演会講演論文集,   2015 03 13
  • 精密板金加工生産システムのためのディスパッチングルールを用いたスケジューリング手法の研究, 阪口龍彦, 田中達也, 清水良明, 内山直樹, 自動制御連合講演会(CD-ROM),   2015
  • A Meta-heuristic Approach for VRP with Simultaneous Pickup and Delivery Incorporated with Ton-Kilo Basis Saving Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, 9th International Congress on Logistics and SCM Systems,   2014 07
  • Genetic Algorithm Based Nesting Method with Considering Schedule for Sheet Metal Processing, Tatsuhiko Sakaguchi, Hayato Ohtani, Yoshiaki Shimizu, ISCIE/ASME International Symposium on Flexible Automation 2014,   2014 07
  • 低炭素社会の実現に向けた階層型ロジスティックス最適化のハイブリッド解法―野菜ロジスティックスを例として―, 嶋田弘希, 清水良明, 阪口龍彦, 日本機械学会生産システム部門講演会2014,   2014 03
  • 階層分散型生産システムにおける複数作業の重複を考慮したスケジューリング手法の研究, 鈴木悠馬, 阪口龍彦, 清水良明, 日本機械学会生産システム部門講演会2014,   2014 03
  • 板金加工におけるネスティング・スケジューリング統合システムのためのネスティング手法の改良, 松本昂樹, 阪口龍彦, 清水良明, 日本機械学会生産システム部門講演会2014,   2014 03
  • トンキロ基準セービング法を援用したVRPSPD問題のメタ解法の提案, 加藤盛仁, 清水良明, 阪口龍彦, 日本機械学会生産システム部門講演会2014,   2014 03
  • Integrated Operation Planning and Scheduling System for Sheet Metal Processing, Tatsuhiko Sakaguchi, Tatsuro Murakami, Yoshiaki Shimizu, Asia Pacific Industrial Engineering and Management System,   2013 12
  • A Hierarchical Hybrid Meta-heuristic Approach for Coping with Large Multi-depot VRP in Practice, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Asia Pacific Industrial Engineering and Management System,   2013 12
  • Three Echelon Logistics Optimization for Operational Planning, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, International Symposium on Scheduling 2013,   2013 07
  • 精密板金加工のための遺伝的アルゴリズムを用いた作業設計とスケジューリングの統合化の研究, 村上達郎, 阪口龍彦, 清水良明, 日本機械学会生産システム部門講演会2013,   2013 03
  • スケジュールを考慮した遺伝的アルゴリズムによるネスティング手法の研究, 大谷隼人, 阪口龍彦, 清水良明, 日本機械学会生産システム部門講演会2013,   2013 03
  • 階層分散型生産システムのための混流生産を考慮したスケジューリング手法の研究, 猶木陽太, 阪口龍彦, 清水良明, 日本経営工学会中部支部研究発表会,   2013 02
  • 製品配送計画の日常的運用のための3階層ネットワークのハイブリッド型メタ最適化手法, 清水良明, 阪口龍彦, 中田貴大, 日本機械学会年次大会講演論文集(CD-ROM),   2012 09 08
  • リバースロジスティクスでの展開に向けた巡回配送計画問題のハイブリッドメタ最適化, 清水良明, 阪口龍彦, GU Minkyoung, 日本機械学会年次大会講演論文集(CD-ROM),   2012 09 08
  • 遺伝的アルゴリズムを用いたネスティングとスケジューリングの統合に関する研究, 阪口龍彦, 村上達郎, 清水良明, 日本機械学会年次大会講演論文集(CD-ROM),   2012 09 08
  • A Scheduling Method with Considering Nesting for Sheet Metal Processing, T. Sakaguchi, T. Murakami, S. Fujita, Y. Shimizu, 2012 ASME/ISCIE International Symposium on Flexible Automation,   2012 06
  • A Study on Data Based Quality Prediction for Steel Industry, Sakaguchi Tatsuhiko, Ram Chandra/Poudel, Shimizu Yoshiaki, Proceedings of JSPE Semestrial Meeting,   2012
    Summary:鉄鋼材料の品質を制御するためには,いくつもの製造条件を設定する必要があり,その決定は非常に困難である.しかし,IT技術の発展により大量の製造実績データが蓄積されるようになり,そのデータから完成品の品質を予測し,製造条件のパラメータを決定することで高品質の製品を製造することが可能となる.本研究では,製造実績データに統計的手法や強化学習手法を適用し,鉄鋼材料の品質を予測する品質予測モデルを構築する.
  • 素材加工型生産システムのための作業設計を考慮したスケジューリング, 阪口龍彦, 藤田匠平, 村上達郎, 清水良明, 自動制御連合講演会(CD-ROM),   2011 11 19
  • S141012 A Study on Scheduling with Considering Nesting for Skip flow Shop Manufacturing, MURAKAMI Tatsuro, FUJITA Shohei, SHIMIZU Yoshiaki, SHIRASE Keiichi, Mechanical Engineering Congress, Japan,   2011 09 11
    Summary:In sheet-metal processing, there are two requirements for efficient manufacturing. One is how to reduce the waste of raw materials. Another is how to make optimal schedules. In actual manufacturing system, it mainly tends to focus on the reduction of raw materials. Therefore, the allocation problem (nesting problem) which decides optimal allocation of parts into raw material is solved without considering manufacturing processes. However, trade-off relations exist between nesting problem and scheduling. Hence those problems might be considered simultaneously. In this study, in order to consider both problems simultaneously, the combinatorial method of dispatching-rule-based scheduling and rule-based nesting is proposed. The effectiveness of proposed method was verified through computational experiments.
  • スキップフローショップ型生産システムのためのネスティングを考慮したスケジューリングに関する研究, 阪口龍彦, 村上達郎, 藤田匠平, 清水良明, 白瀬敬一, 日本機械学会年次大会講演論文集(CD-ROM),   2011 09 10
  • Multi-Objective Analysis Applied to Mixed-Model Assembly Line Sequencing Problem through Elite Induced Evolutionary Method, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, Therayoth Pralomkarn, International Symposium on Scheduling 2011,   2011 06
  • 507 Study on Production Scheduling Considering Process Planning for Skip Flow-shop Manufacturing Systems, SAKAGUCHI Tatsuhiko, MURAKAMI Tatsurou, FUJITA Syohei, SHIMIZU Yoshiaki, SHIRASE Keiichi, 東海支部総会講演会講演論文集,   2011 03 01
  • スキップフローショップ型生産システムのための作業設計を考慮したスケジューリング手法の研究, 阪口龍彦, 村上達郎, 藤田匠平, 清水良明, 白瀬敬一, 日本機械学会東海支部総会講演会講演論文集,   2011 03 01
  • Data Based Quality Prediction Model in Steel Industry, Poudel Ram Chandra, SAKAGUCHI Tatsuhiko, SHIMIZU Yoshiaki, Proceedings of the Japan Joint Automatic Control Conference,   2011
    Summary:Mechanical properties of steel bars are ascertained with destructive tests. Physical modeling of the manufacturing process is difficult but data based models can be used to probe the relation between process parameters and product quality. Lazy Learning, Neural Networks and Multiple Linear Regression approaches have been used on industry data and compared for steel bar's quality prediction. Locally based models tend to perform better than globally based ones.
  • Study on Scheduling with Considering Product Planning, SAKAGUCHI Tatsuhiko, FUJITA Shohei, MURAKAMI Tatsuro, SHIMIZU Yoshiaki, Proceedings of the Japan Joint Automatic Control Conference,   2011
    Summary:原材料から製品を製造する生産システムでは,材料の無駄を省きつつ,最適なスケジュールに基づき効率よく生産を行わなければならない.しかし,材料使用の効率化とスケジュールの最適化の間にはトレードオフの関係が存在する.そこで本研究では,これらを同時に考慮した最適な生産を行うために,ルールベースの作業設計に基づきスケジューリングを行うスケジューリング手法を提案する.
  • S1402-1-2 Study on Integrated Production Scheduling Considering Short-term and Long-term Schedule, SAKAGUCHI Tatsuhiko, TSUJI Atsushi, SHIRASE Keiichi, 年次大会講演論文集 : JSME annual meeting,   2010 09 04
    Summary:It is important to manage the manufacturing system efficiently to acquire competitive edge in the current era of advanced information technologies and market globalization. Production scheduling is one of the important elements for managing the manufacturing system. Mass customization with small quantity production is a main trend these days, so information divergence tends to increase between the detailed daily work schedules in manufacturing level and mid/long-term schedule in management level. In this research, the cooperated scheduling method in which the mid/long-term scheduler and the daily work scheduler fine-tune independently each schedule is proposed.
  • S1402-1-3 Study on Presence Information based Scheduling for Manufacturing Execution System, SAKAGUCHI Tatsuhiko, UCHIDA Masaki, SHIRASE Keiichi, 年次大会講演論文集 : JSME annual meeting,   2010 09 04
    Summary:In this research, to deal with the problem of causing the difference between the scheduling result with the scheduler and the progress report of the manufacturing process of the manufacturing premise even if the very best schedule is prepared beforehand, and leading to the failure of the plan, making the manufacturing execution system to collect, to arrange, to analyze results information on the manufacturing premise, and to feed back to production management and the scheduling system.
  • Multi-Objective Analysis of Periodic Review Inventory Problem with Coordinated Replenishment in Two-echelon Supply Chain System, Dicky Fatrias, Yoshiaki Shimizu, Tatsuhiko Sakaguchi, 4th International Symposium on Scheduling,   2009 07
  • Dynamic Scheduling Algorithm for Autonomous Supply Chain Negotiation, J. Y. Chai, T. Sakaguchi, K. Shirase, 42nd CIRP Conference on Manufacturing Systems,   2009 06
  • 616 On-the-machine Measurement by Non-contact Scanning used 3D CAD data, ONO Taihei, ABE Gou, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2009 03 16
  • 617 Study on Computer Aided Flexible Process Planning System for Autonomous Machining Cell, UKO Makoto, OKUDA Youko, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2009 03 16
  • 618 Off-line Teaching using Haptic Interface For industrial robot, KOGA Shin'ichiro, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2009 03 16
  • 620 Active Control of NC Machine Tools using Removal Volume model Represented by Voxel, FUNATSU Takeshi, NAKAMOTO Keiichi, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2009 03 16
  • B30 Lower limbs muscular power in vertical jump estimated by human musculo-skeletal model considering bi-articular muscle function, NISHIDA Isamu, SAKAGUCHI Tatsuhiko, MAEDA Masato, SHIRASE Keiichi, ジョイント・シンポジウム講演論文集 : スポーツ工学シンポジウム : シンポジウム:ヒューマン・ダイナミックス : symposium on sports engineering : symposium on human dynamics,   2008 11 05
    Summary:The analysis and clarification of man's physical properties are very important in the field of sport and welfare engineering. The results of these analysis and clarification contribute to the improvement of physical ability, the prevention of injury in sports, the effective rehabilitation and the evaluation of dynamic load in daily life. The solid body link model, which has been used for the analysis on human body performance, can estimate the force and torque which acts on each joint from the recorded human motion. However, the muscle functionality is not considered in the solid body link model. In order to evaluate the muscular power during human motion, the human musculo-skeletal model considering bi-articular muscle function is required. In this study, the basic two dimensional musculo-skeletal model of man's lower limb was constructed and the muscular power of each effective muscle was estimated from the recorded human motion. The lower limbs muscular power in vertical jump is estimated to verify the musculo-skeltal model constructed.
  • 3501 MRP Based Inventory Management for Supply Chain Model, SAKAGUCHI Tatsuhiko, FUJIWARA Hiroaki, Chai Jia Yee, SHIRASE Keiichi, 年次大会講演論文集 : JSME annual meeting,   2008 08 02
    Summary:Trends of globalization and advances in Information Technology (IT) have created opportunity in collaborative manufacturing across national borders. A dynamic supply chain configuration is more adaptable by project based manufacturing environment. This research proposes a three echelons dynamic supply chain model where a MRP based manufacturer represents the center node being focused that will autonomously negotiates contracts with downstream client and upstream suppliers. Furthermore a method is proposed to distribute delay penalties of previously contracted jobs to multiple new orders being negotiated simultaneously.
  • 2102 Study on reactive scheduling for aggregate production schedule, SAKAGUCHI Tatsuhiko, KAMIMURA Toshihide, SHIRASE Keiichi, Manufacturing Systems Division Conference,   2008 07 03
    Summary:It is important for executing the manufacturing processes efficiently to create a suitable production schedule. However, the unscheduled changes such as the operational delay or addition of emergent jobs often occur in the actual manufacturing systems. Therefore, it is difficult to execute manufacturing processes in accordance with the predetermined schedule. In the previous research, Genetic Algorithm based reactive scheduling method have been proposed. It deals with the short-term schedule. In this research, the reactive scheduling method is extended for aggregate production schedule by setting the suitable scheduling range.
  • Study On Automatic Process Planning Support System For Integrated Milling-Turning Machine Tool, Y. Zhu, T. Sakaguchi, K. Shirase, 2008 International Symposium on Flexible Automation,   2008 06
  • Multi Orders Negotiation For Dynamic Supply Chain Model, J. Y. Chai, T. Sakaguchi, K. Shirase, 2008 International Symposium on Flexible Automation,   2008 06
  • GA Based Reactive Scheduling for Aggregate Production Scheduling, T. Sakaguchi, T. Kamimura, K. Shirase, Y. Tanimizu, the 41st CIRP Conference on Manufacturing Systems, Manufacturing Systems and Technologies for the New Frontier,   2008 05
  • Penalty Distribution Method for Scheduling Based Supply Chain Management, J. Y. Chai, T. Sakaguchi, K. Shirase, the 41st CIRP Conference on Manufacturing Systems, Manufacturing Systems and Technologies for the New Frontier,   2008 05
  • 208 Study on the digital human model to consider muscular fatigue quantitatively for working environment design, INUI Keita, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2008 03 14
  • 209 Study on off-line-teaching support system for automated programming of industrial welding robots, SHINKAWA Takamune, SAKAGUCHI Tatuhiko, SHIRASE Keiichi, 関西支部講演会講演論文集,   2008 03 14
  • Computational Simulation for Decision of Scheduling Period in Reactive Scheduling, T. Sakaguchi, T. Kamimura, K. Shirase, The 4th International Conference on Leading Edge Manufacturing in 21st Century,   2007 11
  • Reactive Scheduling Based Multi Objectives Negotiation for Dynamic Supply Chain Model, J. Y. Chai, T. Sakaguchi, K. Shirase, The 4th International Conference on Leading Edge Manufacturing in 21st Century,   2007 11
  • ボクセルモデルを取り入れたNC工作機械の自律制御に関する研究, 船津竹史, 阪口龍彦, 中本圭一, 白瀬敬一, 2007年度精密工学会秋季大会学術講演会,   2007 09
  • 1205 Adaptation of Scheduling Method for Collision Avoidance of Machining Operations in Multitasking Machine, SHIMAUCHI Toshiaki, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Manufacturing Systems Division Conference,   2007 07 12
    Summary:In recent years, even in a job shop type production, much higher productivity is required. Multitasking machines are applied widely to reduce preparation time and to improve productivity. Generally, the multitasking machine has the functions for both of turning and milling operations. However, it means that collisions among tools, workpieces and machine tool itself often occur during machining operations. Therefore, the systematic collision avoidance method is needed. In this study, a scheduling method is applied to change the machining sequence to generate a collision free NC program effectively.
  • Reactive Scheduling Based on Status Monitoring for Dynamic Manufacturing Environment, T. Sakaguchi, T. Kamimura, K. Shirase, Y. Tanimizu, 40th CIRP international seminar on manufacturing systems,   2007 05
  • 製造進捗状況に基づくリアクティブスケジューリング, 神村俊秀, 阪口龍彦, 白瀬敬一, 第51回システム制御情報学会研究発表講演会,   2007 05
  • 在庫情報に基づくサプライチェーン・マネジメントに関する研究, Chai Jia-Yee, 阪口龍彦, 白瀬敬一, 谷水義隆, 第51回システム制御情報学会研究発表講演会,   2007 05
  • 307 Research on Voxel Model Applying for Machining Process Simulation, KOUNO Tomoyuki, KOYAMA Tomo, SAKAGUCHI Tatsuhiko, NAKAMOTO Keiichi, SHIRASE Keiichi, The ... Manufacturing & Machine Tool Conference,   2006 11 24
    Summary:In order to prepare a good NC program, which can avoid machining troubles and achieve high machining productivity and accuracy, a sophisticated machining process simulation is required to predict whole machining operation. In this study, the Voxel model is applied to predict change of geometrical machining shape during machining operation. Additionally, the cutting force simulator is integrated to the geometrical machining shape simulator to evaluate machining process before actual machining operation. Cutting parameters such as depths of cut and stepover can be detected by the geometrical machining shape simulation, and then cutting forces can be predicted by the cutting force simulation.
  • Multi-objective Reactive Scheduling Based On Genetic Algorithm, Y. Tanimizu, T. Miyamae, T. Sakaguchi, K. Iwamura, N. Sugimura, The 11th International Conference on Precision Engineering,   2006 08
  • ボクセルモデルによる加工形状シミュレーション, 白瀬敬一, 河野智之, 阪口龍彦, 中本圭一, 精密工学会2006年度関西地方定期学術講演会,   2006 08
  • 4202 Reactive Scheduling for delays of manufacturing processes : Modification of production schedule under distributed environment, KAMIMURA Toshihide, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Manufacturing Systems Division Conference,   2006 06 23
    Summary:Unscheduled delays of manufacturing processes often occur in the manufacturing systems, and an initial production schedule may not satisfy the constraints of make-span. Reactive scheduling method is one of the scheduling methods to cope with such delays effectively. In this research, new reactive scheduling method was proposed to modify an initial schedule by monitoring the progress of manufacturing processes consistently.
  • 4203 Development of Cutting Conditions Reasoning System which Adapts to Case Data on Cutting Operations : Discussion about Adaptation of Cutting Parameters, TANAKA Toshihiro, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Manufacturing Systems Division Conference,   2006 06 23
    Summary:Cutting conditions are very significant parameters for process efficiency and quality in cutting operations. However, the decision of cutting conditions is depend too much on experience and know-how of skillful engineers, because of the difficulty to select suitable cutting conditions. In this research, the expert system based on Case-Based Reasoning is developed to select cutting conditions by processing case data which contain experience and know-how of skillful engineers. This system aims to adapt to the case data for selecting the user oriented cutting conditions.
  • Genetic algorithm based reactive scheduling for additional jobs, T. Sakaguchi, Y. Tanimizu, K. Shirase, N. Sugimura, 39th CIRP international seminar on manufacturing systems,   2006 06
  • Smart off-line teaching system for welding robot, K.Shirase, M. Yamasaki, T. Sakaguchi, The 6th international conference on machine automation,   2006 06
  • ビジュアル・フィードバックによる産業用ロボットの位置誤差補正, 荒尾荘太郎, 阪口龍彦, 白瀬敬一, 2006年度精密工学会春季大会学術講演会,   2006 03
  • Study on Adapive Reactive Scheduling for Dynamic Manufacturing Environment:Reactive Scheduling for Emergent Job, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SHIRASE Keiichi, SUGIMURA Nobuhiro, Proceedings of the Japan Joint Automatic Control Conference,   2006
  • Modification of NC program for Combined Machining Center Adapted for Processing Environment:Application of Scheduling Method for Interference Avoidance, SAKAGUCHI Tatsuhiko, KANAYA Satoshi, SHIRASE Keiichi, Proceedings of the Japan Joint Automatic Control Conference,   2006
  • Reactive Scheduling for Unscheduled Delay of Manufacturing Processes, SAKAGUCHI Tatsuhiko, KAMIMURA Toshihide, SHIRASE Keiichi, Proceedings of the Annual Conference of the Institute of Systems, Control and Information Engineers,   2006
    Summary:生産活動を行う際には,あらかじめ生産スケジュールを作成し,それに基づき生産活動を行う.しかし,生産活動中には作業の遅延がしばしば発生する.本研究ではこれまでに,作業の遅延量を既知とした場合について,適切に初期スケジュールを修正するリアクティブスケジューリング手法を提案してきた.本報では,作業の遅延量が未知の場合について,実際の作業の進行を適切に認識することで初期スケジュールを修正するリアクティブスケジューリング手法を提案する.
  • Advanced Crossover Method for Multi?objective Reactive Scheduling based on Genetic Algorithm, Tanimizu Yoshitaka, Miyamae Tsuyoshi, Maeda Yasuhiro, Sakaguchi Tatsuhiko, Iwamura Koji, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting,   2006
    Summary:Unscheduled disruptions often occur in the actual manufacturing systems, and an initial production schedule may not satisfy the constraints due to the disruptions. A reactive scheduling method based on Genetic Algorithm (GA) was, therefore, proposed to improve the disturbed production schedule in the previous research. This research deals with a new crossover method to improve the performance of the GA based reactive scheduling process for the tardiness minimization problems and the total flow time minimization problems. The multi?objective reactive scheduling method is also proposed based on the improved reactive scheduling method in this research. The combination of the dominance of genes is discussed for the multi?objective reactive scheduling problems of the tardiness minimization and the total flow time minimization. A prototype of reactive scheduling system is developed to evaluate the effectiveness of the proposed method.
  • Digital Copy Milling System Associated with Voxel Model Simulator, Shirase Keiichi, Morishita Akinori, Sakaguchi Tatsuhiko, Nakamoto Keiichi, Proceedings of JSPE Semestrial Meeting,   2006
    Summary:In order to realize an autonomous NC machine tool, the digital copy milling system has been developed for both three?axis and five?axis control milling, in our laboratory. The digital copy milling system generates cutter locations during milling operation based on the principle of traditional copy milling. In this study, a voxel model simulator is integrated with the digital copy milling system for more advancement. The removal volumes for both three?axis and five?axis control milling can be detected by the voxel model simulator to decide a machining operation plan. Also, the collision free tool posture and the suitable tool feed speed can be determined by the voxcel model simulator for the machine tool motion control.
  • Improvement of crossover operator in genetic algorithm for reactive scheduling, T. Sakaguchi, Y. Tanimizu, T. Miyamae, Y. Maeda, K. Shirase, N. Sugimura, The 3rd international conference on leading edge manufacturing in 21st century,   2005 10
  • 産業用ロボットによるLEGOブロックの自律的組立作業, 清原宏彰, 阪口龍彦, 白瀬敬一, 第5回サイバネティック・フレキシブル・オートメーション・シンポジウム,   2005 10
  • 4110 Genetic Algorithm Based Reactive Scheduling : Generation Method of Initial Individuals for Additional Jobs, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SHIRASE Keiichi, SUGIMURA Nobuhiro, Manufacturing Systems Division Conference,   2005 06 24
    Summary:A systematic scheduling method is required to modify the predetermined production schedules in order to cope with unforeseen changes in manufacturing systems. The objective of the present research is to propose a scheduling method based on GA (Genetic Algorithm) for modifying delayed production schedules due to the additional jobs, reactively. A prototype of reactive scheduling system is developed and applied to scheduling problems. The effectiveness of the proposed method is verified through the numerical experiments of the reactive scheduling problems.
  • 4111 Development of Cutting Conditions Reasoning System which Adapts to Case Data on Cutting Operations, MIMURA Akio, SAKAGUCHI Tatsuhiko, SHIRASE Keiichi, Manufacturing Systems Division Conference,   2005 06 24
    Summary:The CAM system for machining is introduced in many companies. But the determination of processing procedures, cutting conditions, etc. is left to the expert engineers. And the automation in consideration of engineer's experiences and know-how is difficult and is not put in practical use. In this research, in order to realize the automation, the expert system to select cutting conditions with processing data is developed. In this system, cutting conditions are reasoned using the processing case data. This system is not necessary to express engineer's experiences and know-how as a rule, like rule-based reasoning.
  • リアクティブスケジューリングのための遺伝的アルゴリズムにおける交叉法の改良, 阪口龍彦, 谷水義隆, 宮前勇志, 前田泰宏, 白瀬敬一, 杉村延広, 第49回システム制御情報学会研究発表講演会,   2005 05
  • 1323 A Study on Genetic Algorithm Based Multi-objective Reactive Scheduling, KAWAMOTO Junzou, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, 関西支部講演会講演論文集,   2005 03 18
    Summary:A reactive scheduling method based on GA (Genetic Algorithm) was proposed in the previous research. The method can improve the delayed production schedules by unscheduled changes, without interrupting the progress of the manufacturing process. This research improves the reactive scheduling method for multi-objective problems by using multi-objective GA.
  • Development of Smart Off-line Teaching System for Industrial Robots, Yamasaki Masanori, Sakaguchi Tatsuhiko, Shirase Keiichi, Proceedings of JSPE Semestrial Meeting,   2005
    Summary:Off?line teaching of industrial robots is skillful operation that is required extensive amount of time and cost. Furthermore, conventional off?line teaching systems have no function to generate teaching programs for industrial robots automatically or autonomously. In order to realize more effective off?line teaching for higher flexible manufacturing systems, a new concept is required. In this study, a new concept called ″Welding Feature″ is proposed to develop a smart off?line teaching system. The ″Welding Features″ represent welding operations performed in the past by industrial robots symbolically. The ″Welding Features″ are referred to generate a new teaching program for industrial robots automatically or autonomously. In this paper, a new concept called ″Welding Feature″ is introduced to apply a smart off?line teaching system.
  • Cutting Force Simulation of End Milling for Circular Cutting Operations, Koyama Tomo, Sakaguchi Tatsuhiko, Shirase Keiichi, Proceedings of JSPE Semestrial Meeting,   2005
    Summary:End milling operations are indispensable to produce dies and molds for manufacturing. In order to improve cutting efficiency and accuracy, cutting force prediction is effective to evaluate optimum cutting conditions and tool paths. In this study, the Instantaneous Rigid Force Model is applied to predict cutting force in end milling operations. The Instantaneous Rigid Force Model is widely applicable to predict cutting forces for various cutting types and modes of both square and ball end mills. In this paper, cutting force simulations for end milling operations of concave and convex circular contours are shown. Also, the comparisons among different curvatures of convex and concave circular contours for both up? and down?cut are shown.
  • Genetic algorithm based reactive scheduling in manufacturing systems - Advanced crossover method for tardiness minimization problems -, Tatsuhiko Sakaguchi, Yoshitaka Tanimizu, Kazuhiro Harada, Koji Iwamura, Nobuhiro Sugimura, International Conference on Machine Automation, 347-352 (2004-11, Osaka Japan).(Published as the selected paper in 2006),   2004 11
  • Improvement of reactive scheduling system for setup time, TANIMIZU Yoshitaka, MIYAMAE Tsuyoshi, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, 年次大会講演論文集 : JSME annual meeting,   2004 09 04
    Summary:Unscheduled disruptions often occur in the actual manufacturing systems, and an initial production schedule may not satisfy the constraints due to the disruptions. A reactive scheduling method based on Genetic Algorithm (GA) was, therefore, proposed to improve the disturbed production schedule in the previous research. This research deals with improvement of the reactive scheduling method for consideration of setup operations. Setup operations are modeled, and the previous reactive scheduling method is modified to generate suitable production schedules that contain setup operations.
  • Genetic algorithm based reactive scheduling for emergent jobs, Yoshitaka Tanimizu, Tatsuhiko Sakaguchi, Nobuhiro Sugimura, 2004 Japan - USA Symposium on Flexible Automation, CD-ROM (2004-7, Denver Colorado).,   2004 07
  • Adaptation of production schedule by reactive scheduling in dynamic environments : Improvement of crossover method for tardiness minimization problem, TANIMIZU Yoshitaka, HARADA Kazuhiro, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, Manufacturing Systems Division Conference,   2004 06 11
    Summary:Unscheduled disruptions often occur in the actual manufacturing systems, and an initial production schedule may not satisfy the constraints due to the disruptions. A reactive scheduling method based on Genetic Algorithm (GA) was, therefore, proposed to improve the disturbed production schedule in the previous research. This research deals with improvement of the reactive scheduling method for tardiness minimization problems. A new crossover method is proposed to generate more suitable individuals in the reactive scheduling process than the previous crossover method. A prototype of reactive scheduling system was developed to evaluate the effectiveness of the proposed method.
  • A study on reactive scheduling system based on genetic algorithm, Yoshitaka Tanimizu, Tatsuhiko Sakaguchi, Nobuhiro Sugimura, Koji Iwamura, 5th International Workshop on Emergent Synthesis, 85-89 (2004-5, Budapest Hungary).,   2004 05
  • 410 A Study on Reactive Scheduling based on Genetic Algorithm : Modify the production schedules from the viewpoint of tardiness, HARADA Kazuhiro, SAKAGUCHIl Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, 関西支部講演会講演論文集,   2004 03 17
    Summary:In the research, a reactive scheduling method based on GA (Genetic Algorithm) is proposed to modify the delayed production schedules. The proposed method modifies the predetermined production schedules from the viewpoint of tardiness, when unforeseen delays of manufacturing processes occur in the manufacturing systems. The proposed method modifies in consideration of alternative resources. Effectiveness of the proposed reactive scheduling method is verified through several computational experiments in terms of the optimization of the production schedules.
  • A Study on Genetic Algorithm Based Reactive Scheduling - Applications to Multi-objective Problems, Kawamoto Junzou, Sakaguchi Tatsuhiko, Tanimizu Yoshitaka, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting,   2004
    Summary:本研究では,生産活動中に生じる作業の遅延や特急ジョブの追加などの外乱に対して遺伝的アルゴリズムを用いたリアクティブスケジューリング手法を提案してきた.これまでの研究では,総処理時間があらかじめ定めた基準を満たさなくなる場合に,生産活動を中断することなくスケジュールを改善する手法を提案した.本研究では,複数の目的関数を同時に改善することができるように拡張を行う.
  • Genetic algorithm based reactive scheduling for emergent jobs, Tatsuhiko Sakaguchi, Yoshitaka Tanimizu, Nobuhiro Sugimura, the 2nd International Conference on Leading Edge Manufacturing in 21st Century, 725-728 (2003-11, Niigata Japan).,   2003 11
  • Reactive scheduling for unscheduled changes in manufacturing systems, Current trends in production management, Yoshitaka Tanimizu, Tatsuhiko Sakaguchi, Nobuhiro Sugimura, European Series in Industrial Management, 6, 80-86 (2003-10, Karlsruhe Germany). (Published as the book in 2003),   2003 10
  • Genetic Algorithm based Reactive Scheduling - Procedure of Unscheduled Input of Jobs, Tanimizu Yoshitaka, Kawamoto Junzou, Sakaguchi Tatsuhiko, Harada Kazuhiro, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting,   2003
    Summary:これまでに著者らは,加工作業の遅延に対し,生産開始前に作成した生産スケジュールを,遺伝的アルゴリズムを用いて,適切な生産スケジュールに変更するリアクティブスケジューリング手法を提案した.本報告では,これを拡張して,加工中に発生した不良によるジョブの再投入や,オーダの不規則な追加に対して,リアクティブスケジューリングを行う方法を提案する.さらに,プロトタイプシステムを開発し,簡単な例題に適用する.
  • Reactive scheduling using genetic algorithm - Input of emergent jobs based on branch and bound method, Sakaguchi Tatsuhiko, Tanimizu Yoshitaka, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting,   2003
    Summary:生産活動中に特急ジョブが発生した場合,迅速に初期スケジュールを変更する必要がある.本研究では,遺伝的アルゴリズムを用いて初期スケジュールを適切に改善するリアクティブスケジューリング手法を提案する.本報では,分岐限界法に基づき,初期スケジュールの総加工時間に影響を与えない時間区間にジョブを追加することにで,遺伝的アルゴリズムの初期個体群を生成する手法を提案する.
  • Reactive scheduling system for unforeseen delays of manufacturing processes, Yoshitaka Tanimizu, Tatsuhiko Sakaguchi, Nobuhiro Sugimura, 7th International Pacific Conference on Manufacturing & Management, 2, 714-719 (2002-11, Bangkok Thailand).,   2002 11
  • Genetic algorithm based reactive scheduling in multi-layered manufacturing system, Yoshitaka Tanimizu, Tatsuhiko Sakaguchi, Kazuhiro Harada, Nobuhiro Sugimura, 2002 Japan - USA Symposium on Flexible Automation, 2, 951-958 (2002-7, Hiroshima Japan).,   2002 07
  • A Study on Reactive Scheduling for Hierarchical and Decentralized Manufacturing Systems, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, HARADA Kazuhiro, 関西支部講演会講演論文集,   2002
    Summary:In the research, a reactive scheduling method based on GA (Genetic Algorithm) is proposed to modify the delayed production schedules. The proposed method modifies the predetermined production schedules reactively without interrupting the progresses of the manufacturing processes, when unforeseen delays of manufacturing processes are occurred in the manufacturing systems. A reactive scheduling method for multi-layered manufacturing systems is also proposed in order to modify the production schedules of all the layers concurrently and to keep the consistency among the production schedules of all the layers in the manufacturing systems. Effectiveness of the proposed reactive scheduling method is verified through several computational experiments in terms of the optimization of the production schedules and the computation time of the modification processes in the multi-layered manufacturing systems.
  • F-0617 Reactive Scheduling for Hierarchical and Decentralized Manufacturing Systems : Application of GA, TANIMIZU Yoshitaka, TEI Akihito, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, 年次大会講演論文集 : JSME annual meeting,   2001 08 22
    Summary:Production scheduling tasks are carried out hierarchically and concurrently, such as production scheduling for manufacturing systems, for factories and for shops, by different persons and/or organizations. Therefore, a systematic procedure is eagerly required to change the production schedules and to keep the consistency among the hierarchical scheduling tasks, when some unforeseen disruptions occur in the manufacturing systems. A rescheduling method is proposed to change the production schedules and to keep the consistency among the production schedules of the hierarchical and decentralized manufacturing systems. A prototype of distributed reactive scheduling system for the hierarchical and decentralized manufacturing systems is developed and applied to the consistency management problems in the rescheduling tasks.
  • 1007 Distributed reactive scheduling system for large manufacturing systems, TANIMIZU Yoshitaka, TEI Akihito, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, The ... Factory Automation Conference,   2001 03 22
    Summary:Production scheduling tasks are in general carried out hierarchically and concurrently, such as scheduling for manufacturing systems, for factories and for shops, by different persons and/or organizations. Therefore, a systematic procedure is eagerly required to change the schedules and to keep the consistency among the hierarchical scheduling tasks, when some unforeseen disruptions occur in the manufacturing systems. A rescheduling method is proposed to change the schedules and to keep the consistency among the schedules of the large manufacturing systems. A prototype of distributed reactive scheduling system for large manufacturing systems is developed and applied to the consistency management problems in the rescheduling tasks.

Misc

  • Report on ASME/ISCIE 2012 International Symposium on Flexible Automation(ISCIE Activity), SAKAGUCHI Tatsuhiko, SYSTEMS, CONTROL AND INFORMATION, 56, 12,   2012 , http://ci.nii.ac.jp/naid/110009562703
  • Study on Supply Chain Management Based on Inventory Status, Chai Jia-Yee, Sakaguchi Tatsuhiko, Shirase Keiichi, Tanimizu Yoshitaka, Proceedings of the Annual Conference of the Institute of Systems, Control and Information Engineers, 7, 0, 58, 58,   2007 , 10.11509/sci.SCI07.0.58.0, http://ci.nii.ac.jp/naid/130006980717
    Summary:This research deals with the three layered supply chain model which consist of material company, assembly company and client. The supply chain model based on the reactive scheduling and inventory management is proposed in order to decide the suitable price and due-date.
  • 遺伝的アルゴリズムを用いた多目的リアクティブスケジューリングにおける交叉法の改良, 谷水義隆, 宮前勇志, 前田泰宏, 阪口龍彦, 岩村幸治, 杉村延広, 精密工学会大会学術講演会講演論文集, 2006, B08,   2006 03 01 , 10.11522/pscjspe.2006S.0.75.0, http://jglobal.jst.go.jp/public/200902243615966845
  • Study on Adaptive Reactive Scheduling for Dynamic Manufacturing Environment-Reactive Scheduling for Emergent Job-, 阪口龍彦, 谷水義隆, 白瀬敬一, 杉村延広, 自動制御連合講演会(CD-ROM), 49th, ROMBUNNO.SU3-1-2,   2006 , http://jglobal.jst.go.jp/public/200902251420194000
  • 1323 A Study on Genetic Algorithm Based Multi-objective Reactive Scheduling, KAWAMOTO Junzou, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, The Proceedings of Conference of Kansai Branch, 2005, 0, _13, 45_-_13-46_,   2005 , http://ci.nii.ac.jp/naid/110006187611
    Summary:A reactive scheduling method based on GA (Genetic Algorithm) was proposed in the previous research. The method can improve the delayed production schedules by unscheduled changes, without interrupting the progress of the manufacturing process. This research improves the reactive scheduling method for multi-objective problems by using multi-objective GA.
  • 段取時間と搬送時間を考慮したリアクティブスケジューリングシステムの開発, 宮前勇志, 川本順三, 原田和弘, 阪口龍彦, 谷水義隆, 杉村延広, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2004, 17.4,   2004 03 16 , http://jglobal.jst.go.jp/public/200902202033031681
  • Improvement of reactive scheduling system for setup time, TANIMIZU Yoshitaka, MIYAMAE Tsuyoshi, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, The proceedings of the JSME annual meeting, 2004, 0, 51, 52,   2004 , http://ci.nii.ac.jp/naid/110004055959
    Summary:Unscheduled disruptions often occur in the actual manufacturing systems, and an initial production schedule may not satisfy the constraints due to the disruptions. A reactive scheduling method based on Genetic Algorithm (GA) was, therefore, proposed to improve the disturbed production schedule in the previous research. This research deals with improvement of the reactive scheduling method for consideration of setup operations. Setup operations are modeled, and the previous reactive scheduling method is modified to generate suitable production schedules that contain setup operations.
  • Adaptation of production schedule by reactive scheduling in dynamic environments : Improvement of crossover method for tardiness minimization problem, TANIMIZU Yoshitaka, HARADA Kazuhiro, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, The Proceedings of Manufacturing Systems Division Conference, 2004, 0, 63, 64,   2004 , http://ci.nii.ac.jp/naid/110004061189
    Summary:Unscheduled disruptions often occur in the actual manufacturing systems, and an initial production schedule may not satisfy the constraints due to the disruptions. A reactive scheduling method based on Genetic Algorithm (GA) was, therefore, proposed to improve the disturbed production schedule in the previous research. This research deals with improvement of the reactive scheduling method for tardiness minimization problems. A new crossover method is proposed to generate more suitable individuals in the reactive scheduling process than the previous crossover method. A prototype of reactive scheduling system was developed to evaluate the effectiveness of the proposed method.
  • A Study on Genetic Algorithm Based Reactive Scheduling - Applications to Multi-objective Problems, Kawamoto Junzou, Sakaguchi Tatsuhiko, Tanimizu Yoshitaka, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting, 2004, 0, 152, 152,   2004 , http://ci.nii.ac.jp/naid/130004655453
    Summary:本研究では,生産活動中に生じる作業の遅延や特急ジョブの追加などの外乱に対して遺伝的アルゴリズムを用いたリアクティブスケジューリング手法を提案してきた.これまでの研究では,総処理時間があらかじめ定めた基準を満たさなくなる場合に,生産活動を中断することなくスケジュールを改善する手法を提案した.本研究では,複数の目的関数を同時に改善することができるように拡張を行う.
  • ジョブの追加に対するリアクティブスケジューリング, 川本順三, 原田和弘, 阪口龍彦, 谷水義隆, 杉村延広, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2003, 14.11,   2003 03 21 , http://jglobal.jst.go.jp/public/200902279899091830
  • Reactive scheduling using genetic algorithm - Input of emergent jobs based on branch and bound method, Sakaguchi Tatsuhiko, Tanimizu Yoshitaka, Sugimura Nobuhiro, Proceedings of JSPE Semestrial Meeting, 2003, 0, 73, 73,   2003 , http://ci.nii.ac.jp/naid/130005026991
    Summary:生産活動中に特急ジョブが発生した場合,迅速に初期スケジュールを変更する必要がある.本研究では,遺伝的アルゴリズムを用いて初期スケジュールを適切に改善するリアクティブスケジューリング手法を提案する.本報では,分岐限界法に基づき,初期スケジュールの総加工時間に影響を与えない時間区間にジョブを追加することにで,遺伝的アルゴリズムの初期個体群を生成する手法を提案する.
  • 遺伝的アルゴリズムを用いたリアクティブスケジューリングの繰り返し処理, 原田和弘, 阪口龍彦, 谷水義隆, 杉村延広, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2002, 15.18,   2002 03 21 , http://jglobal.jst.go.jp/public/200902155677032656
  • A Study on Reactive Scheduling for Hierarchical and Decentralized Manufacturing Systems, SAKAGUCHI Tatsuhiko, TANIMIZU Yoshitaka, SUGIMURA Nobuhiro, HARADA Kazuhiro, The Proceedings of Conference of Kansai Branch, 2002, 0, _4, 25_-_4-26_,   2002 , http://ci.nii.ac.jp/naid/110002492690
    Summary:In the research, a reactive scheduling method based on GA (Genetic Algorithm) is proposed to modify the delayed production schedules. The proposed method modifies the predetermined production schedules reactively without interrupting the progresses of the manufacturing processes, when unforeseen delays of manufacturing processes are occurred in the manufacturing systems. A reactive scheduling method for multi-layered manufacturing systems is also proposed in order to modify the production schedules of all the layers concurrently and to keep the consistency among the production schedules of all the layers in the manufacturing systems. Effectiveness of the proposed reactive scheduling method is verified through several computational experiments in terms of the optimization of the production schedules and the computation time of the modification processes in the multi-layered manufacturing systems.
  • 遺伝的アルゴリズムを用いたリアクティブスケジューリングシステムの開発, 丁顕仁, 阪口龍彦, 谷水義隆, 杉本延広, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2001, 13.13,   2001 03 15 , http://jglobal.jst.go.jp/public/200902118455700119
  • 1007 Distributed reactive scheduling system for large manufacturing systems, TANIMIZU Yoshitaka, TEI Akihito, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, ファクトリーオートメーション部門講演会講演論文集, 2001, 1, 23, 24,   2001 , http://ci.nii.ac.jp/naid/110002506706
    Summary:Production scheduling tasks are in general carried out hierarchically and concurrently, such as scheduling for manufacturing systems, for factories and for shops, by different persons and/or organizations. Therefore, a systematic procedure is eagerly required to change the schedules and to keep the consistency among the hierarchical scheduling tasks, when some unforeseen disruptions occur in the manufacturing systems. A rescheduling method is proposed to change the schedules and to keep the consistency among the schedules of the large manufacturing systems. A prototype of distributed reactive scheduling system for large manufacturing systems is developed and applied to the consistency management problems in the rescheduling tasks.
  • F-0617 Reactive Scheduling for Hierarchical and Decentralized Manufacturing Systems : Application of GA, TANIMIZU Yoshitaka, TEI Akihito, SAKAGUCHI Tatsuhiko, SUGIMURA Nobuhiro, The proceedings of the JSME annual meeting, 1, 0, 335, 336,   2001 , http://ci.nii.ac.jp/naid/110002526956
    Summary:Production scheduling tasks are carried out hierarchically and concurrently, such as production scheduling for manufacturing systems, for factories and for shops, by different persons and/or organizations. Therefore, a systematic procedure is eagerly required to change the production schedules and to keep the consistency among the hierarchical scheduling tasks, when some unforeseen disruptions occur in the manufacturing systems. A rescheduling method is proposed to change the production schedules and to keep the consistency among the production schedules of the hierarchical and decentralized manufacturing systems. A prototype of distributed reactive scheduling system for the hierarchical and decentralized manufacturing systems is developed and applied to the consistency management problems in the rescheduling tasks.
  • 階層分散型生産システムにおけるコンカレント・リスケジューリング, 谷水義隆, 岩村幸治, 阪口龍彦, 杉村延広, 電気学会全国大会講演論文集, 2000, 3, 1215, 1218,   2000 03 21 , http://jglobal.jst.go.jp/public/201302196991257884
  • Reactive Scheduling Based on Status Monitoring for Dynamic Manufacturing Environment, CD-ROM,   2007
  • Genetic algorithm based reactive scheduling for additional jobs, 255-260,   2006
  • Genetic algorithm based reactive scheduling in manufacturing system -Advanced crossover method for tardiness minimization problems-, 207-212,   2006
  • Evolutional Reactive Scheduling for Agile Manufacturing Systems, Vol. 44, No. 18-19, 3727-3742,   2006
  • Multi-objective Reactive Scheduling Based On Genetic Algorithm, 65-70,   2006
  • Smart off-line teaching system for welding robot, CD-ROM,   2006
  • Genetic algorithm based reactive scheduling for emergent jobs, CD-ROM,   2004 , 10.11509/sci.SCI04.0.87.0
  • Genetic algorithm based reactive scheduling in manufacturing systems - advanced crossover method for tardiness minimization problems -, 347-352,   2004
  • Genetic algorithm based reactive scheduling for emergent jobs, 725-728,   2003
  • A study on reactive scheduling system based on genetic algorithm, 85-89,   2003
  • Reactive scheduling for unscheduled changes in manufacturing systems, 6, 80-86,   2003

Research Grants & Projects

  • Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Co-evolutionary optimization of operation planning and scheduling for scheet metal processing, We propose an integrated method of nesting and scheduling based on the coevolutionary genetic algorithm for sheet metal processing. First of all, we improve our previous scheduling method by applying the new fitness function which consider the construction of parts and total flow time. Moreover, we propose a hybrid scheduling method by using the genetic algorithm and dispatching rule. Finally, we develop a coevolutionary genetic algotihm. In this algorithm, individuals are evaluated by the cost function, and the genetic operations are conducted based on the grouped gene. We validated the effectiveness of our algorithm by the computational experiments.
  • Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Deployment of Optimization Engineering toward Realizing Smart and Resilient Logistics, To provide a decision aid coping with innovative logistic systems, this study has aimed at exploring a new paradigm known as optimization engineering. To work with this idea from strategic, tactical and operational aspects, we have developed a user-friendly framework suitable to total optimization as a whole. First, we formulate a mathematical model with Weber basis cost accounting to discuss the issue generally and substantially. Then, we have developed its hybrid meta-heuristic method possible to solve practically real world problems. We have shown not only every method obtained here is significant by itself but also expects a smart and resilient deployment available for responding to various dynamism of society if it is utilized in the proposed framework.
  • Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Study on smint NC processor which includes milling process model for process prediction to buill the next generation of machine tools, 1. Machining shape simulator based on Voxel model In order to predict the change of material shape during machining operation, a machining shape simulator based on the Voxel model was developed. By introducing the Oct-tree structure into the Voxel model to represent a material shape precisely, the total amount of the Voxel (memory usage of the computer) can be reduced to realize a practical machining shape simulation. Moreover. the machining shape simulation of five-axis controlled machining can be achieved successfully utilizing the feature of the Voxel model. 2. Cutting force simulator of endmilling operation In order to predict the change of cutting force during machining operation, a cutting force simulator for endmilling operation was developed. It was verified that the predicted cutting forces in several cutting conditions have good agreement with the measured one for both the square end mill and the ball end mill. In addition, a virtual machining simulation, which shows the change of material shape and cutting force during milling operation. was achieved. 3. Process planning support system for 5-axis machine tool In order to utilize the performance of 5-axis machine tools effectively a process planning support system, which assists to determine the suitable tool posture for 5-axis machine tools, was developed. The process planning support system is designed to perform the collision check and the tool path generation quickly by applying Voxel model expression of the material and the tooling shapes. It is verified that the suitable tool posture for 5-axis machine tools can be determined effectively. 4. Reactive scheduling utilizing for autonomous machine tool In order to achieve flexible operation of the autonomous machine tool with a smart NC processor, a reactive scheduling system which is able to change the machining operation schedule dynamically according to the observed situation of machine tools was developed. It was confirmed that the machining operation schedule was flexibly updated to the change and the difference of operation times by the computational experiment.