J4 ›› 2011, Vol. 46 ›› Issue (6): 90-98.
• Articles •
YUAN Shuai1, LIU Xinzhi1, 2*
The problem of fault estimation for a class of switched nonlinear systems with timevarying delay is studied. The nonlinearity satisfies certain sector condition. By employing a switched observer-based fault estimator, the problem is formulated as an H∞ filtering problem. Some delaydependent sufficient conditions are derived to ensure both the absolute stability and a prescribed L2-gain bound of an augmented system from the original system and a fault estimation error system. Also, the parameter matrices of the fault estimator are obtained based on the cone complementarity algorithm. Finally, a numerical example is provided to demonstrate the effectiveness of the proposed approach.
switched system; fault estimation; time-varying delay; H∞ filtering
YUAN Shuai1, LIU Xinzhi1, 2*. On designing H∞ fault estimator for switched Lur′e
systems with time-varying delay[J].J4, 2011, 46(6): 90-98.
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