Robust Fault-tolerant Attitude Control of Three-axis Stabilized Satellite
The three-axis stabilized satellites attitude control under repairable fault conditions is researched in this paper.With the consideration of rotational inertia uncertainty,a control effectiveness factor is used to describe the fault magnitude of satellite actuators.Moreover,the uncertainty of fault diagnosis results is also considered in the design of controller.And a feedforward control unit is introduced to decrease the influence of fault diagnosis uncertainty,Therefore the attitude controllers absolute dependence on fault diagnosis results is avoided ultimately.The H∞ and H2 norms are used to signify the performance indexes of attitude information and output torques.The robust fault-tolerant attitude control is achieved by combining the state feedback with a pole assignment method.Finally,the simulation results reveal that this controller can stabilize a three-axis stabilized satellite quickly with a high precision of stabilization and pointing.
Fault-tolerant control Pole assignment Attitude Control
CHEN Xueqin HU Fangfang SUN Yahui SUN Rui
Research Center of Satellite Technology,Harbin Institute of Technology,Harbin 150080
国际会议
长沙
英文
1254-1259
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）