Discrete Event-Triggered Robust Fault-Tolerant Control for Nonlinear Networked Control Systems with -Safety Degree and Actuator Saturation

Yajie Li and Wei Li

Mathematical Problems in Engineering, 2015, vol. 2015, 1-17

Abstract:

This paper deals with the discrete event-triggered robust fault-tolerant control problem for uncertain nonlinear networked control systems (NNCSs) with α -safety degree. A discrete event-triggered communication scheme (DETCS) is initially proposed, and a closed-loop fault model is subsequently established for NNCSs with actuator saturation under the DETCS. Based on an appropriately constructed delay-dependent Lyapunov–Krasovskii function, sufficient conditions are derived to guarantee the asymptotic stability of NNCSs under two different event-triggered conditions and are established as the contractively invariant sets of fault tolerance with α -safety degree. Furthermore, codesign methods between the robust fault-tolerant controller and event-triggered weight matrix are also proposed in terms of linear matrix inequality. The simulation shows that the resultant closed-loop fault NNCSs possesses a high safety margin, and an improved dynamic performance, as well as a reduced communication load. A comparative analysis of the two event-triggered conditions is discussed in the experiment section.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:590598

DOI: 10.1155/2015/590598

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