Active fault tolerant control design approach for the flexible spacecraft with sensor faults

作者：Gao, Zhifeng^*; Han, Bing; Jiang, Guoping; Lin, Jinxing; Xu, Dezhi

来源：Journal of the Franklin Institute, 2017, 354(18): 8038-8056.

DOI：10.1016/j.jfranklin.2017.09.023

• ROBUST RELIABLE CONTROL
• INPUT SATURATION
• ATTITUDE-CONTROL
• COORDINATED TRACKING
• ACTUATOR FAILURES
• STABILIZATION
• SYSTEMS
• DYNAMICS
• VEHICLE
• THRUST

In this paper, the problem of active fault tolerant control (FTC) is studied for a class of flexible spacecraft attitude systems with Lipschitz nonlinearity and sensor fault. Firstly, a functional observer is designed for the attitude systems of flexible spacecraft in order to detect the time of unknown sensor fault occurred. Next, the sensor fault estimation is performed by filtering the output estimation error, as usually done in the residual generation framework. Then, a dynamic output feedback-based FTC approach is proposed to the flexible spacecraft in sensor faulty case, it not only attenuates flexible appendage disturbance with a given level gamma, but also tolerates the effect of unknown sensor fault. Finally, the effectiveness of the proposed FTC method is demonstrated in the attitude systems of flexible spacecraft subject to a time-varying sensor fault.

• 出版日期2017-12
• 单位江南大学; 中国科学院电工研究所; 南京邮电大学