Abstract
The integrity design problem of fault tolerant control for networked control system (NCS) with actuator failures and data packet dropouts is investigated. The data packet dropouts in both sensor-controller (S-C) and controller-actuator (C-A) links are described by two switches, which can be modeled as a discrete event system with known rate. After introducing the matrix of actuator failure, the closed-loop NCS is developed, which can be viewed as asynchronous dynamical systems (ADSs). Then, the sufficiency of exponential stability for the NCS is obtained based on the theory of ADSs. The output feedback controllers that can guarantee system stability are also proposed. Finally, two numerical examples are given to demonstrate the validity of our proposed approach.
Highlights
Along with the rapid development of communication networks, a great amount of effort has been made on faulttolerant control (FTC) problems for networked control systems (NCSs) recently
According to the method in [1], data packet dropouts Journal of Control Science and Engineering in both S-C and C-A links are described by two independent switches, which can be modeled as a discrete event system with known rate
According to the characteristic of trivial solution of system (5), we can get that the exponential stability of NCS (5) is equivalent to asymptotic stability, which corresponds with the requirement of integrity design for FTC
Summary
Along with the rapid development of communication networks, a great amount of effort has been made on faulttolerant control (FTC) problems for networked control systems (NCSs) recently. As compared to the plentiful works on FTC for NCSs with network-induced delay, only a few attention has been paid to the study of FTC for NCSs with data packet dropout (as in [14, 15, 23]). From the above description, considering data packet dropout in both S-C and C-A links, the problem of FTC for NCSs with actuator failures is still a challenging problem. This paper is devoted to study FTC for NCSs with actuator failures and packet dropout in both S-C and C-A links.
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