基于动态观测器的多故障诊断技术的应用研究

针对卫星这类复杂系统多故障诊断的难题,研究了一种基于动态观测器的多故障诊断方法.该方法通过改变动态观测器的结构,使之对某一故障具有鲁棒性,从而简化了设计一族观测器的复杂性.给出了动态观测器的设计方法和多故障诊断策略,并在某卫星姿控系统中进行了仿真应用.仿真结果表明,适用于复杂系统的多故障诊断与分离,并可实现诊断的实时性.

Application Research of Multi-fault Diagnosis Technology Based on Dynamic Observer

Multi-fault diagnosis is a puzzle for the complicated system such as satellite.A diagnosis method based on the dynamic observer is researched.The structure of dynamic observer is modified to make it to be robust to a fault.So,the complexity of designing a family observer is reduced.The design method of dynamic observer and the strategy of multi-fault diagnosis are proposed.The diagnosis technology is applied to a satellite attitude control subsystem.The result of simulation proves that the method is suitabl...