システム制御情報学会論文誌

柔軟宇宙機の6自由度非線形制御

受動性に基づくアプローチ

池田裕一, 木田隆, 長塩知之

2005 年 18 巻 1 号 p. 1-9
発行日: 2005/01/15
公開日: 2011/10/13

DOIhttps://doi.org/10.5687/iscie.18.1

ジャーナルフリー

抄録を表示する抄録を非表示にする

In this paper, we consider six degree of freedom (dof) nonlinear control of flexible spacecraft. Firstly, the motion equation of the six dof flexible spacecraft is described and the error system is derived. Secondly, static output feedback controller is derived by passivity-based control method as the case of the attitude control. Thirdly, based on the results, we design the dynamic output controller without velocity measurement. Finally, effectiveness of the control methods is verified by simulations.

抄録全体を表示

PDF形式でダウンロード (1172K)
計測雑音の確率的な性質を考慮した連続時間線形時不変システムの同定

伊藤麻里, 渡辺亮

2005 年 18 巻 1 号 p. 10-21
発行日: 2005/01/15
公開日: 2011/10/13

DOIhttps://doi.org/10.5687/iscie.18.10

ジャーナルフリー

抄録を表示する抄録を非表示にする

In this paper, we discuss the identification of continuous linear time invariant systems with non-Gaussian observation noise. First we analyze the stochastic property of actual observation noise in terms of mixture distribution. Then we consider the method of data processing that converts the stochastic distribution of the noise in the actual observation to Gaussian distribution and propose a new identification method based on this data processing. Finally, we demonstrate the proposed identification method in both simulation and experiment.

抄録全体を表示

PDF形式でダウンロード (1560K)
手動操作系において切替操作を行うオペレータの異常検出

内田一成, 山本茂, 奥宏史

2005 年 18 巻 1 号 p. 22-27
発行日: 2005/01/15
公開日: 2011/10/13

DOIhttps://doi.org/10.5687/iscie.18.22

ジャーナルフリー

抄録を表示する抄録を非表示にする

In this paper, we propose a fault detection scheme of examining if a human operator controlling a switched system stays in normal condition. Our attention focuses on an expert who manually operates a system with on-off switches. To keep the system in an acceptable state, we expect that the expert flips switches almost always with impeccable timing when the expert is in good condition. Therefore, dispersion of the timing of flipping on-off switches is a reliable indicator of the condition of the expert. The proposed fault detection scheme is based on on-line statistical hypotheses testing between the dispersion being significantly wider than usual and not so.

抄録全体を表示

PDF形式でダウンロード (840K)
インライン¹多層膜の新しい測定手法

工藤重樹

2005 年 18 巻 1 号 p. 28-38
発行日: 2005/01/15
公開日: 2011/10/13

DOIhttps://doi.org/10.5687/iscie.18.28

ジャーナルフリー

抄録を表示する抄録を非表示にする

A novel method to measure thickness of a thin multi-layer film (TMLF) is proposed by using the Daubechies wavelet (DBW) and the Maximum entropy method (Burg algorithm).
A signal is a reflective spectrum measured by a spectroscope when visible light is normally incident upon a TMLF. This spectrum is composed of interference and sometimes absorption. The DBW is very effective to separate them. It is impossible to achieve the same effect by an ordinary low pass filter.
After this pre-processing, thickness is calculated by the Burg algorithm. It is more accurate to estimate spectrum than the FFT algorithm. And also the tapered Burg algorithm that is to minimize error variance for the estimation of frequency is more effective for this objective.
Now a thickness gage has been developed that has a very high sensitive detector of a CCD area sensor that has plural rows of a CCD array with binning operation based on this novel method. It becomes possible to measure thickness of a TMLF in-line that means in production line in a non-destructive manner.

抄録全体を表示

PDF形式でダウンロード (3742K)
リファレンスガバナと予見制御の統合設計

畑中健志, 鷹羽浄嗣

2005 年 18 巻 1 号 p. 39-41
発行日: 2005/01/15
公開日: 2011/10/13

DOIhttps://doi.org/10.5687/iscie.18.39

ジャーナルフリー

PDF形式でダウンロード (456K)

J-STAGEへの登録はこちら（無料）