Error code analysis and selection principle of M-ary modulation in network-based control systems  

作　　者：赵顺利 尹逊和 魏学业 H. K. LAM 

机构地区：[1]School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China [2]Department of Informatics, King's College London, London WC2R 2LS, U. K

出　　处：《Journal of Central South University》2016年第6期1372-1382,共11页中南大学学报（英文版）

基　　金：Project(61172022) supported by the National Natural Science Foundation of China;Project(GDW20151100010) supported by the State Administration of Foreign Experts Affairs of China

摘　　要：Error codes induced by M-ary modulation and modulation selection in network-based control systems are studied.It is the first time the issue of error codes induced by M-ary modulation is addressed in control field.In network-based control systems,error codes induced by noisy channel can significantly decrease the quality of control.To solve this problem,the network-based control system with delay and noisy channel is firstly modeled as an asynchronous dynamic system(ADS).Secondly,conditions of packet with error codes(PEC)loss rate by using M-ary modulation are obtained based on dynamic output feedback scheme.Thirdly,more importantly,the selection principle of M-ary modulation is proposed according to the measured signal-to-noise ratio(SNR)and conditions of PEC loss rate.Finally,system stability is analyzed and controller is designed through Lyapunov function and linear matrix inequality(LMI)scheme,and numerical simulations are made to demonstrate the effectiveness of the proposed scheme.Error codes induced by M-ary modulation and modulation selection in network-based control systems are studied. It is the first time the issue of error codes induced by M-ary modulation is addressed in control field. In network-based control systems, error codes induced by noisy channel can significantly decrease the quality of control. To solve this problem, the network-based control system with delay and noisy channel is firstly modeled as an asynchronous dynamic system （ADS）. Secondly, conditions of packet with error codes （PEC） loss rate by using M-ary modulation are obtained based on dynamic output feedback scheme. Thirdly, more importantly, the selection principle of M-ary modulation is proposed according to the measured signal-to-noise ratio （SNR） and conditions of PEC loss rate. Finally, system stability is analyzed and controller is designed through Lyapunov function and linear matrix inequality （LMI） scheme, and numerical simulations are made to demonstrate the effectiveness of the proposed scheme.

关 键 词：network-based control system asynchronous dynamic system （ADS） M-ary modulation delay error code linear matrix inequality （LMI） 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TN911.22[自动化与计算机技术—控制科学与工程]