摘要
提出了一种采用自适应技术来实现对动态系统中非线性执行器故障诊断的新方法．执行器的故障可看成是由其参数的非期望变化所导致．本文构造了一种自适应观测器，由于该观测器的自适应部分包括了参数估计，故障诊断可由参数估计直接获得‘文中证明了算法的收致性。
This short paper presents a novel solution to the fault diagnosis of nonlinear actuators in known deterministicdynamic systems. The actuator is characterized by a parameter vector whose unexpected changes are regarded as the faults in theactuator.A nonlinear adaptive observer is constructed which incorporates the parameter vector.Using the wellestablished procedure in the construction of adaptive updating rules in model reference adaptive control, online estimtion of theparameter vector is cbtained and is shown to be able to generate a desired diagnosis.An example is included in order to demon-strate the use of the proposed approach.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
1999年第4期587-590,共4页
Control Theory & Applications
关键词
自动控制系统
故障诊断
非线性执行器
参考模型
actuators
fault detection and diagnosis
nonlinear adaptive observer
strictly positive real
