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Dual-side Event-triggered Output Feedback H∞ Control for NCS with Communication Delays
Fuqiang Li,Lisai Gao,Gensheng Dou,Baozhou Zheng 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.1
This paper studies the dual-side event-triggered output feedback H∞ control for networked control systemwith network-induced delays. Unlike continuous-time event-triggered mechanism (ETM) or state-dependent ETM,the discrete dual-side ETMs are firstly proposed by using plant output and controller output, respectively, whicheffectively reduce transmission rate of sampled data in both sensor-to-controller and controller-to-actuator channels. Then, the closed-loop system is modelled as a time-delay system, which characterizes effects of the dual-sideETMs and networked-induced delays in a unified framework. Based on the system model, asymptotic stabilitycriterion satisfying H∞ performance is derived, and conservatism is reduced by the delay decomposition methodand reciprocally convex approach. Moreover, a co-design scheme is presented to design the dual-side ETMs andcontroller simultaneously, which is more convenient than two-step design method requiring controllers to be givena priori. Finally, examples confirm effectiveness of the proposed method.