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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:WANG Yu-lei,MA Guang-fu,LI Chuan-jiang.Fault diagnosis using robust cascade observers with application to spacecraft attitude control[J].Journal of Harbin Institute Of Technology(New Series),2011,18(4):123-131.DOI:10.11916/j.issn.1005-9113.2011.04.024.
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Fault diagnosis using robust cascade observers with application to spacecraft attitude control
Author NameAffiliation
WANG Yu-lei Dept.of Control Science and Engineering,Harbin Institute of Technology,Harbin 150001,China 
MA Guang-fu Dept.of Control Science and Engineering,Harbin Institute of Technology,Harbin 150001,China 
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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