非线性时滞不确定系统执行器鲁棒故障诊断  

Actuator Fault Diagnosis in Nonlinear-time-delay System with Uncertainties

作　　者：刘爱伦[1] 陈永云[1] 俞金寿[1] 

机构地区：[1]华东理工大学自动化系,上海200237

出　　处：《华东理工大学学报（自然科学版）》2004年第5期576-579,共4页Journal of East China University of Science and Technology

基　　金：教育部博士点基金资助(20030251003)

摘　　要：提出了一种含有不确定性环节的非线性时滞系统的执行器鲁棒故障诊断方法,通过应用观测器技术和自适应技术来确定估计系统输出与实际系统输出的差值,若大于或等于阈值,诊断发生了故障。同时详细地分析了该方法的鲁棒性、灵敏性和稳定性。最后通过仿真验证了它的有效性。This paper proposes a robust fault diagnosis method of actuator in nonlinear-time-delay system with uncertainties. The nonlinearity is related with both inputs and outputs, the uncertainties include states and output. The observer techniques and adaptive techniques are used to obtain values of system output and estimated output. The fault occurs if the difference between them equals or exceeds the threshold. Robustness, sensitivity and stability are analyzed. At last, this method is validated through simulation.

关 键 词：非线性时滞系统 鲁棒性 灵敏度 稳定性 故障诊断 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]