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システム/制御/情報 Vol. 9 (1996), No. 5

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. 9 (1996), No. 5

多層ニューロ回路の新しい誤差逆伝搬法とその代数学的性質

山本 祥弘

pp. 201-209

抄録

The back propagation method is well known as a supervised learning rule of a neural network.
In this paper, a new learning rule is proposed where the output error vector is adjusted to zero by correcting two kinds of vectors, the one is weighting vectors (matrix) and the other is an input vector of the layer. The corrected input vector has a role of a tentative teacher of the following layer. In this way, the output error is propagated backward, and is partly corrected by each weighting vector.
Computatinal method is also presented for a matrix inversion which is required in the proposed method and nonsingularity of the matix is discussed.
Simulation result of the Exclusive-OR problem shows the effectiveness of the proposed method.

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多層ニューロ回路の新しい誤差逆伝搬法とその代数学的性質

導関数群の融合に基づく未知関数の近似

川上 肇, 黒江 康明, 森 武宏

pp. 210-218

抄録

Progress in recent sensor technology has inspired us to start research on recovering an object surface from depth data together with additional sensory information, i.e. data on its differential geometry or a priori knowledge about its smoothness. Any method for the recovery with both classes of the additional information, however, has not been proposed yet. Such a problem can be generalized to that of function approximation using its different order derivatives, which covers many important applications. To solve the problems generally, we propose a method of fusing all the information as follows : (1) To evaluate the smoothness and penalties for the derivative data of each order, we define a functional. (2) All the information are related to one another by restricting the fused results in the set of stationary functions of the functional. By the fusion, a new approximation is realized as the stationary function that minimizes all penalties simultaneously.

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導関数群の融合に基づく未知関数の近似

LMIによる2慣性共振系の制御

杉江 俊治, 濱本 研一

pp. 219-226

抄録

This paper gives a controller design method of 2 mass-spring system which satisfies the given H control performance and pole assignment in the prescribed region in the presence of physical parameter perturbations. In addition, its effectiveness is demonstrated by experiments.

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LMIによる2慣性共振系の制御

自動車の揚力特性推定に関する一考察

天坂 格郎, 中矢 裕之, 織田 和典, 大橋 徹也, 尾崎 俊治

pp. 227-235

抄録

It is shown that combining multivariate analysis with neural networks is useful for solving problems with complex interaction such as a vehicle aerodynamics of lift. This method leads us to various valuable observations. In this paper, we show the effectiveness of this method.
Regarding some of the past insufficiencies of solving problems by multivariate analysis method or neural networks only, there are conditions such as (1) difficult to collect data, (2) mere knowhow, (3) predicting complex interaction. But by combining neural networks method with multivariate analysis, we can solve the problems efficiently.
In addition, solving this problems by combining neural networks method with multivariate analysis, new detections about the works of hidden layers in neural networks were found.

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自動車の揚力特性推定に関する一考察

非最小位相集中定数部分を含むむだ時間系に対するループ伝達関数回復

呉 景偉, 石原 正, 猪岡 光

pp. 236-245

抄録

For a plant consisting of a lumped non-minimum phase part and an output delay, we discuss LTR (Loop Transfer Recovery) techniques for designing a predictor-based LQG controller. We focus our attention to the feedback property achieved at the plant output side. We show that a feedback property recovered by the formal application of the conventional LTR procedure can be achieved by the partial LTR technique which has a clear system-theoretic meaning. This fact provides a theoretical justification of the formal application of the conventional LTR technique to a plant including finite unstable zeros and a time delay. In addition, we point out that the partial LTR technique provides more freedom in shaping target feedback properties. We propose a simple technique exploiting this freedom. A numerical example is given to illustrate usefulness of the proposed technique.

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非最小位相集中定数部分を含むむだ時間系に対するループ伝達関数回復

マイクロホン動特性が音響透過損失へ及ぼす影響とその補償方法について

和田 光代, 石崎 麻子, 小野 敏郎, 黒部 能幸

pp. 249-251

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マイクロホン動特性が音響透過損失へ及ぼす影響とその補償方法について

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