TS模型和H_∞观测器在卫星故障诊断中的应用

Fault diagnosis of Takagi-Sugeno fuzzy systems using H_∞ observers in satellite attitude control

摘要:

针对卫星姿态控制系统中的陀螺故障,分别在先验变量已知和未知两种情况下设计了基于TS模糊模型的H∞最优故障观测器,并证明了两种情况下H∞最优故障观测器的可行性.最后通过数学仿真验证所提出的故障诊断方法的有效性,并对两种H∞故障观测器的性能和实用性进行了综合比对.

Abstract:

This article describes gyro fault diagnosis architecture in satellite attitude control systems and designs two H∞ optimal fault observers by dint of Takagi-Sugeno(TS) fuzzy model in the case that the premise variables are known or not.Sufficient conditions for the existence of the two H∞ optimal fault observers are derived respectively.Mathematical simulation is carried out to validate the effectiveness of the fault diagnosis method.Performance and practicability properties of the H∞ fault observers are analyzed synthetically.