Mixed H_/H_∞ fault detection observer design for networked control system with variable sampling period
by Jin-rong Fan; Hua-jing Fang
International Journal of Modelling, Identification and Control (IJMIC), Vol. 21, No. 1, 2014

Abstract: For networked control system (NCS) with time-varying sampling period and time-delay, a discrete-time model with parameter uncertainties lying inside a polytopic framework is proposed. Based on the finite frequency parameter dependent quadratic H_∞ index performance for minimising the disturbance and the corresponding H_ index performance for maximising the worst-case fault sensitivity, a fault detection observer is designed for residual generation. By the aid of the generalised Kalman-Yakubovich-Popov (GKYP) lemma, the existence conditions of such an observer are given in terms of linear matrix inequalities (LMIs). A numerical example is given to illustrate the effectiveness of the proposed approach.

Online publication date: Sat, 07-Jun-2014

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