Event-triggered mechanism based dynamic quantized output feedback controller for networked control systems

A co-design strategy of optimal event-triggered mechanism and dynamic output feedback controller for a class of networked control system with resource-constrained and random time delay is proposed based on the mode-dependent quantizer. Firstly, an adaptive event-triggered mechanism is designed according to the output error in order to reduce the number of information transmission and the occupation of network bandwidth while ensuring the stability of networked control system. Secondly, a mode-dependent quantizer is used for seeking the balance between network congestion and quantized error, which can improve the quality of control of NCS in a certain extent. Next, the co-design scheme of event-triggered mechanism and the dynamic output feedback controller(DOFC) is given to ensure the stability and minimum quadratic performance index of the closed-loop system based on Lyapunov function and linear matrix inequality technique. Finally, a simulation example illustrates the efficiency of the proposed method.