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システム/制御/情報 Vol. 18 (2005), No. 3

ISIJ International
belloff
オンライン版ISSN: 2185-811X
冊子版ISSN: 1342-5668
発行機関: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

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  20. Vol. 18 (2005)

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  29. Vol. 9 (1996)

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  30. Vol. 8 (1995)

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  33. Vol. 5 (1992)

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  34. Vol. 4 (1991)

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  35. Vol. 3 (1990)

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  37. Vol. 1 (1988)

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キーワードランキング

23 Nov. (Last 30 Days)

システム/制御/情報 Vol. 18 (2005), No. 3

α-domination戦略に基づく分散強化学習と資源共有問題への応用

青木 圭, 池田 心, 木村 元, 小林 重信

pp. 81-88

DOI:

10.5687/iscie.18.81

抄録

In the distributed systems in which information cannot be exchanged directly among agents, we deal with problems of deciding how each agent holds the shared resource. To achieve a lot of tasks greedily, agents tend to attempt to hold the resources for a long term. However the system performance decreases consequentially because it competes with the processing of other agents' tasks. To acquire cooperative policies that avoid above competition, we formulate the shared resource problems to multi-criteria decision making problems with the priority level by using the domain knowledge. We propose autonomous distributed control using distributed reinforcement learning that narrows the choice of action space by using the α-domination strategy based on value functions for the performance and the cooperation. The proposed method is applied to the distributed database systems, and simulation results shows that our method acquires cooperative policies and improves the throughput performance of the system.

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α-domination戦略に基づく分散強化学習と資源共有問題への応用

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mendeley

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Ris

マスカスタマイゼーション対応生産計画システムの多品種モデルへの拡張

上野 信行, 古田 恭三, 奥原 浩之, 渋木 宏明, 倉本 敏明

pp. 89-99

DOI:

10.5687/iscie.18.89

抄録

With the diversification of the customer need, there is an issue for a business model to realize mass customization in the automobile industry. A new production planning system of implementing mass customization, which is concerned with a single-item production planning system, has already been presented. This paper proposes a multi-item production and inventory planning model of the mass customization that considers the restriction of daily manufacturing capacity. This model becomes a stochastic programming problem of which sub problem is a linear programming problem. An efficient and practical solution algorithm for the multi-item model is developed.

mendeley

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マスカスタマイゼーション対応生産計画システムの多品種モデルへの拡張

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Ris

納期遅れに対するペナルティを考慮した受注生産システムの最適発注方策に関する一解法

竹本 康彦, 有薗 育生

pp. 100-107

DOI:

10.5687/iscie.18.100

抄録

Manufacturing systems are classified into make-to-stock (MTS) systems and make-to-order (MTO) systems. In particular, the MTO manufacturing systems have been applied to many enterprises in order to react to consumer's uncertain demands and various requirements. Until now, in the studies for the order splitting policy to some original equipment manufacturers (OEMs) under the MTO manufacturing systems, the expectation of the lead time has been mainly considered. In general, the lead-time has the variability because of the fluctuations of the processing time and the demand. Therefore, when the optimal operation of the MTO manufacturing systems is investigated, we should consider the possibility of the delay for the appointed date of delivery of products. In this study, taking the penalty of the delay of delivery into consideration, we investigate the order splitting policy to two OEMs having the difference in the processing cost and the capacity.

mendeley

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納期遅れに対するペナルティを考慮した受注生産システムの最適発注方策に関する一解法

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モデル誤差を伴うシステムにおける最適コストの評価手法

山川 栄樹, 嶋瀬 裕子, 江本 源一

pp. 108-117

DOI:

10.5687/iscie.18.108

抄録

At the phase of feasibility study on the system for process optimization, effectiveness of the system is often estimated in terms of a mathematical program formulated from the regional analysis of the operating results. A two-level mathematical programming is presented, which predicts the optimal cost in the worst case caused by the error involved in the process model. In particular, nonlinear inequality constraints of the upper level problem are proposed to give a limit on the acceptable error range. In order to examine the efficiency of the proposed method, a case study on the operation optimizing system of the electric power plant is reported.

mendeley

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モデル誤差を伴うシステムにおける最適コストの評価手法

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状態にジャンプを有する線形システムの遅延フィードバック制御

平田 健太郎, 小亀 英己

pp. 118-125

DOI:

10.5687/iscie.18.118

抄録

The effect of the delayed feedback control on the stability of periodic solutions of linear systems with sate jump is studied. Although the stability of the open-loop and the OGY feedback cases can be analyzed via matrix representations (Poincare map), the system with DFC requires an operator representation of the state transition on a certain function space due to the infinite-dimensionality caused by the time delay element in the controller. A stability condition is given in terms of the spectrum of this operator. Also an analytic formula and a numerical method for the computation of the spectrum are provided.

mendeley

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状態にジャンプを有する線形システムの遅延フィードバック制御

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