Quantized control of distributed event-triggered networked control systems with hybrid wired–wireless networks communication constraints

Abstract

Traditional analysis and design for networked control systems (NCSs) with state quantization have been investigated under single wired/wireless network environment. This paper studies the quantized control of distributed event-triggered NCSs under hybrid wired–wireless networks environment. Unlike the most existing NCSs, the controller communicates with distributed sensors through multiple wired–wireless channels and the measured signals from sensors might suffer from communication constraints of hybrid wired–wireless networks, which makes the quantized control of distributed event-triggered NCSs more complex. To reduce the communication burden of each channel, a distributed event-triggered mechanism and multiple quantization scheme are firstly proposed. The communication characters of hybrid wired–wireless networks are then analyzed, which are described by different Markov chains. Furthermore, a novel system model is presented, and a sufficient condition of the stochastic stability is derived. The relationship between the system stability criteria and the maximum hybrid wired–wireless network-induced delays, the event-generators parameters and multiple quantization parameters is established. Finally, simulation results confirm the effectiveness and feasibility of the proposed method.