Fault diagnosis using robust cascade observers with application to spacecraft attitude control
WANG Yu-lei, MA Guang-fu, LI Chuan-jiang
Dept.of Control Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
Abstract:
This paper proposes a new gyro and star sensor fault diagnosis architecture that designs two groups of cascade H∞ optimal fault observers using LMI for spacecraft attitude control systems.The basic idea of the approach is to identify the gyro fault to good effect first and then makes a further diagnosis for the star sensor based on the former.The H∞ optimal fault observer in design has the robustness with respect to model uncertainties and diagnosis uncertainties.Its robustness to unknown inputs is as a special study in frequency domain.Finally,simulation results demonstrate the effectiveness and feasibility of the proposed control algorithm.
Key words: spacecraft attitude control system fault diagnosis H∞ optimal fault observer cascade observer
DOI：10.11916/j.issn.1005-9113.2011.04.024
Clc Number:V448.22
Fund:
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Fault diagnosis using robust cascade observers with application to spacecraft attitude control
本站小编 哈尔滨工业大学/2019-10-23
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