title: Fault detection for discrete-time switched systems with sensor stuck faults and servo inputs.
abstract: This paper addresses the fault detection problem of switched systems with servo inputs and sensor stuck faults. The attention is focused on designing a switching law and its associated fault detection filters (FDFs). The proposed switching law uses only the current states of FDFs, which guarantees the residuals are sensitive to the servo inputs with known frequency ranges in faulty cases and robust against them in fault-free case. Thus, the arbitrarily small sensor stuck faults, including outage faults can be detected in finite-frequency domain. The levels of sensitivity and robustness are measured in terms of the finite-frequency H- index and l2-gain. Finally, the switching law and FDFs are obtained by the solution of a convex optimization problem.
authors.affiliation: College of Information Science and Engineering, Northeastern University, Shenyang 110819, PR China. Electronic address: zhongguangxin84@163.com.
authors.forename: Guang-Xin
authors.initials: GX
authors.lastname: Zhong
authors.affiliation: College of Information Science and Engineering, Northeastern University, Shenyang 110819, PR China; State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang 110819, PR China. Electronic address: yangguanghong@ise.neu.edu.cn.
authors.forename: Guang-Hong
authors.initials: GH
authors.lastname: Yang
keywords: Fault detection; Linear matrix inequality (LMI); Sensor stuck faults; Switched systems