一类非线性系统执行器多时滞故障诊断

提出了一种非线性系统的执行器多时滞鲁棒故障诊断方案,非线性与系统输入和输出有关,不确定性包括系统输入和状态等环节;通过构造观测器对状态和输出进行估计,得到具有鲁棒性的阈值;若系统的实际输出与估计输出之差(即残差)超出阈值,说明有故障发生,同时用自适应跟踪器对故障进行跟踪;在理论上证明了该方案的鲁棒性、灵敏度和稳定性,通过M atlab软件仿真验证了该方法的有效性.

Robust Fault Diagnosis of Actuator in Nonlinear Many-Time-Delay Uncertain Systems

The paper proposes a robust fault diagnosis of actuator in nonlinear-many-time-delay uncertain system.Nonlinear is related with inputs and outputs;uncertainties include states and inputs.System states and outputs are estimated by technology of designing observer,and method of producing robust threshold is educed.Adaptive tracker is designed and used to track fault if difference between system output and estimated output equals or surpasses threshold.The note also analyses robustness,sensitivity and stability.Finally,simulation proves this method feasible.