|Active Fault Tolerant Control Scheme for Satellite Attitude Systems: Multiple Actuator Faults Case
Zhifeng Gao*, Zepeng Zhou, Guoping Jiang, Moshu Qian, and Jinxing Lin
International Journal of Control, Automation, and Systems, vol. 16, no. 4, pp.1794-1804, 2018
Abstract : "In this paper, an active fault tolerant control (FTC) design approach is proposed for the satellite attitude
systems with exogenous disturbance and multiple actuator faults. Firstly, the nonlinear attitude system model of
rigid satellite with multiple actuator faults is given. Next, an actuator fault diagnosis scheme, including a fault
detection module and a fault estimation module, is given so as to detect the time of unknown actuator faults occurred
and obtain their estimation values. Then, a terminal sliding mode-based fault tolerant attitude controller
is designed using backstepping control technique, which guarantees that the closed-loop attitude systems of rigid
satellite are asymptotically stable in the presence of multiple actuator faults. Numerical simulations illustrate the
good performance of active FTC proposed in this study"
Fault detection, fault estimation, fault tolerant control, satellite attitude systems.