title: Robust fault detection for switched positive linear systems with time-varying delays.
abstract: This paper investigates the problem of robust fault detection for a class of switched positive linear systems with time-varying delays. The fault detection filter is used as the residual generator, in which the filter parameters are dependent on the system mode. Attention is focused on designing the positive filter such that, for model uncertainties, unknown inputs and the control inputs, the error between the residual and fault is minimized. The problem of robust fault detection is converted into a positive L1 filtering problem. Subsequently, by constructing an appropriate multiple co-positive type Lyapunov-Krasovskii functional, as well as using the average dwell time approach, sufficient conditions for the solvability of this problem are established in terms of linear matrix inequalities (LMIs). Two illustrative examples are provided to show the effectiveness and applicability of the proposed results.
authors.affiliation: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China.
authors.forename: Mei
authors.initials: M
authors.lastname: Xiang
authors.affiliation: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China. Electronic address: xiangzr@mail.njust.edu.cn.
authors.forename: Zhengrong
authors.initials: Z
authors.lastname: Xiang
keywords: Average dwell time; Fault detection; Positive L(1) filtering; Switched positive systems; Time-varying delays