A New Model of Networked Control Systems in Robust Control Framework

In this paper, a new model is proposed to describe networked control systems NCS with delays and quantization errors. Firstly, the non-idealizations are unified in the classic robust control framework and the entire system is modeled as a discrete system closed via a block uncertainty. Then, the stability criteria are derived using small gain theorem, µ tool and integral quadratic constraint IQC method, respectively. Finally, a simulation and a numerical example are provided to demonstrate the effectiveness of the proposed methods. This work is supported by the Science Foundation of China University of Petroleum, Beijing No.YJRC-2013-11 and National Natural Science Foundation NNSF of China under Grant 61374033.