A time-domain LPV H _/ H ∞ fault detection filter

摘要

In this paper, a time-domain linear parameter-varying H _ /H ∞ residual generator or fault detection filter is proposed, which allows a trade-off to be established, between sensitivity and robustness of the residual against the fault and disturbance, respectively. Also, the proposed fault detection filter fits well with the time-domain property of the linear parameter-varying system. A special case when the performance of the residual generator approximates one of the fault estimators is also discussed. A turboshaft engine example is used to demonstrate the effectiveness of the proposed method.