The Co-design Method for Robust Satisfactory H∞ / H2 Fault-tolerant Event-triggered Control of NCS with α - Safety Degree

摘要

Based on discrete event-triggered communication scheme (DETCS), this paper is concerned with the satisfactoryH∞ / H2 event-triggered fault-tolerant control problem for networked control system (NCS) with α -safety degreeand actuator saturation constraint from the perspective of improving satisfaction of fault-tolerant control and saving networkresource. Firstly, the closed-loop NCS model with actuator failures and actuator saturation is built based on DETCS;Secondly, based on Lyapunov-Krasovskii function and the definition of α -safety degree given in the paper, a sufficientCondition is presented for NCS with the generalized H2 andHα performance, which is the contractively invariant set offault-tolerant with α -safety degree, and the co-design method between event-triggered parameter and satisfactory faulttolerantcontroller is also given in this paper. Finally, the simulation example verifies the feasibility of improving systemsatisfaction and the effectiveness of saving network resource for the method, moreover, the compatibility analysis of therelated indexes is also discussed and analyzed.