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システム/制御/情報 Vol. 20 (2007), No. 8

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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システム/制御/情報 Vol. 20 (2007), No. 8

モデルベース診断に基づくOn-Board診断の一方法

平塚 聡, 盧 信宏, 房岡 璋

pp. 321-330

抄録

In this paper, we propose an on-board diagnosis method for the embedded system based on the model-based diagnosis. We introduce the qualitative model for the embedded system by transforming the continuous dynamics of components into the discrete state transition system which is represented in the circuit called a synchronous Boolean tree (SBT). The SBT is a network of the (temporal) propositional operations with latches. The faults of components are reduced to the stuck-at faults in SBT. We present a many-value tableau method for the SBT diagnosis, which allows the efficient search for the faulty parts by propagating the observed anomaly through the SBT.

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モデルベース診断に基づくOn-Board診断の一方法

周波数整形ILQ設計法によるエレベータドアの開閉速度制御

孫田 康雄, 國松 禎明, 山本 豪志朗, 大坪 亮, 藤井 隆雄

pp. 331-337

抄録

This paper introduces a modeling and design for opening-and-closing speed control of an elevator door using ILQ design method with frequency-shaping function (FSILQ). A door opening-and-closing control system is designed by applying this method to a very low order reduced model. High performance of the resulting control system is obtained through proper modeling, simulation and repetitive experiments. It is confirmed that an inevitable vibration of the door speed due to model uncertainty can be suppressed by proper shaping of the frequency response of the closed loop transfer function from noise to output. The resulting control system is evaluated by applying ramp inputs as well as step inputs. As a result, the proposed control system has been verified to show robustness for a wide range of weight of door panels.

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周波数整形ILQ設計法によるエレベータドアの開閉速度制御

シリーズ型質問文に対して単純結合法を利用した逓減的加点質問応答システム

村田 真樹, 内山 将夫, 白土 保, 井佐原 均

pp. 338-346

抄録

We participated in NTCIR QAC-1, QAC-2, and QAC-3, which were evaluation workshops for answering questions held by the National Institute of Informatics of Japan and studied question-answering systems for contextual questions. Contextual questions are defined as a series of questions with contexts. For example, the first question is “What is the capital of Japan?” and the one succeeding is related to the first such as “What was it called in ancient times?”. Contextual question-answering can be considered interactive. This paper describes our system for contextual questions. Our question-answering system used numerous effective methods to answer questions. We used a method of connecting question sentences to handle contextual questions. We also used a method of using multiple documents to obtain more accurate answers. We confirmed that these methods were effective in the experiments. Our question-answering system obtained the second best accuracy in QAC-1 and the best accuracy in both QAC-2 and QAC-3 for contextual question answering. It is thus a high-performance system.

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シリーズ型質問文に対して単純結合法を利用した逓減的加点質問応答システム

バンドパスフィルタを用いた反証に基づくPIDゲインの調整

佐伯 正美, 濱田 修, 和田 信敬

pp. 347-354

抄録

A data-driven model-free design method of PID gains based on falsification is examined for a mixed sensitivity control problem. The PID gains that do not satisfy the specification can be falsified effectively by using many sinusoidal responses by our previous method, but they are not falsified well by a single response. Therefore, it requires many experiments in order to obtain good results. In this paper, we propose to generate a set of fictitious responses by filtering a single response with many bandpass filters, and to use them for falsification. The PID gains can be falsified effectively by this new method.

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バンドパスフィルタを用いた反証に基づくPIDゲインの調整

多目的遺伝的アルゴリズムと準ニュートン法のハイブリッドによる複数ロバスト解探索

廣谷 裕介, 小野 智司, 中山 茂

pp. 355-357

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多目的遺伝的アルゴリズムと準ニュートン法のハイブリッドによる複数ロバスト解探索

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