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Research of Rubust Control for Networked Control Systems with Delay and Packet Loss Based on the Switched Systems Theory

Author: SunFengJie
Tutor: SunWenAn
School: Dalian University
Course: Applied Computer Technology
Keywords: Network Control Systems (NCS) Network induced Delay Data Packet-loss Robust Control Linear Matrix Inequalities (LMIs) Predictive control Lyapunov Functions
CLC: TP393.06
Type: Master's thesis
Year: 2011
Downloads: 69
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Abstract


With percolation and blend of kinds of disciplines, the research of Control Systems have been new opportunities and challenges. Such as computer communication network inserts into the control systems so that have formed NCSs. Compared with the traditional control systems, NCSs have more advantages, as convenient for network cabling, low cost, easy maintenance, strong anti-interference and the sharing of resources etc. At the same time, NCSs brings network-induced delay, packet loss, wrong order etc. Many experts and scholars have studied on the network control systems, and been many achievements. However, there still exist some issues to be solved. This paper makes the following several aspects of the research:1. The exponential stability of NCSs with uncertain time-delay and data packets dropout is considered. The controller gain designed is assumed to have additive and multiplicative gain variations. Based on the theory of switch system and Lyapunov stability, the sufficient condition of exponential stability is presented for NCSs. According to the theory of linear matrix inequality, Obtained the the state feedback controller by solving linear matrix inequality.2. The robust stabilization of NCSs with input and state delay and packet loss is studied. According to the theory of robust control and Lyapunov, the sufficient condition that is a group of the linear matrix inequality (LMI) for robust stabilization of NCSs is obtained. By solving LMI, the robust stabilization controllers are got.3. A type of predictive compensation of the delay, packet loss and wrong order of NCSs is discussed. Through the study of the predictive compensation, its mode be setted up. Based on the theory of Lyapunov stability, the stability of the NCSs are researched through the eigenvalue of the network control systems and LMI. By solving LMI, the feedback controllers can be got.4. H∞guaranteed cost control of NCSs with Markov chain loss packet process and uncertain structure. Based to the theory of robust control, Lyapunov and Markov jumping, the H∞guaranteed cost controllers can be got. Using the MATLAB, the result can be further proved.

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