A New Approach to Design Cascade Fault Diagnosis Observers for Flexible Spacecraft

摘要：

This paper proposes a new gyro and star sensor fault diagnosis architecture that designs two groups of cascade H∞ optimal fault observers for a spacecraft with flexible appendages and schemes a Compensation PD controller to achieve fault tolerant control. 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 flexible uncertainties and diagnosis uncertainties. The Compensation PD controller ensures attitude errors maintained to a small set around the equilibrium point for a long time even though gyro and star sensor faults occur simultaneously. Finally, simulation results demonstrate the effectiveness and feasibility of the proposed control algorithm.

作者: Yulei Wang Guangfu Ma Chuanjiang Li

作者单位: Department of Control Science and Engineering,Harbin Institute of Technology Harbin,150001,China

会议类型: 国际会议

会议名称: The 3rd International Symposium on Systems and Control in Aeronautics and Astronautics(第三届航空航天系统与控制国际会议 ISSCAA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 928-933

在线出版日期: 2010-01-08（万方平台首次上网日期，不代表论文的发表时间）