Fault Detection and Isolation for Gyro and Infrared Earth Sensor Based on Observer and Filter

摘要：

The gyro and the infrared earth sensor (IES) are two kinds of important components in satellite attitude control system. A fault detection and isolation (FDI) approach based on observer and Kalman filter is presented. Firstly, the models of gyro and IES are discussed, and a virtual linear system of satellite pitch channel is constructed. Then, an observer for fault detection and a Kalman filter for fault isolation are designed. The observer could detect faults from IES and gyro, but the Kalman filter could only detect IES fault rather than sensitive to gyro fault. So, fault isolation method could be achieved via fault arbitration logic given in the paper. Lastly, computer simulations are finished on the condition of system health status (no faults), IES fault and gyro fault. The simulation results show that the proposed fault detection and isolation approach is correct and feasible.

作者: Xin-Sheng Wang Lei Ma

作者单位: Beihang University,Beijing,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: 1190-1194

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）