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Study on Fault-tolerant Guaranteed Cost Control for Nonlinear Systems

Author: NiuYanRong
Tutor: ChouJiQing
School: Hebei University of Science and Technology
Course: Applied Mathematics
Keywords: Nonlinear systems T - S fuzzy systems Delay systems Linear matrix inequality (LMI) Fault - tolerant guaranteed cost control
Type: Master's thesis
Year: 2012
Downloads: 13
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System fault-tolerant guaranteed cost control problem, and since have been proposed, has been well received by the attention of Chinese and foreign scholars, has a good application prospect. As science and technology continue to forward the rapid development of the industrial process is the emergence of an increasingly large and complex, and large-scale high-level integrated automation system increasingly high requirements for system control. The face of the emergence and development of new facilities, the traditional control theory and control method gradually showing some limitations, many innovative, cutting-edge control methods have been proposed and widely used, such as Robust H ∞. Tolerant control, Fuzzy Adaptive Fault Tolerant Control. Designed to effectively protect modern complex system reliability and security, has very important significance to the development of our modern. Any system will inevitably suffer from the actuator failure, sensor failure, and the impact of the failure of the system itself. Therefore, when a fault occurs, how to make a control system to maintain stability and to achieve acceptable performance indicators in the control field of research priorities and one of the hot issues. This paper studies the problem of nonlinear system fault-tolerant guaranteed cost controller design study, its main work can be summarized as follows: 1) for sensor failure occurred TS fuzzy system to study its fault-tolerant guaranteed cost control problem. The goal is to design a controller, the TS fuzzy delay systems in the event of sensor failure both to maintain the stability of the system, but also be able to meet our performance given. LMI method, Lyapunov stability theory, give out the sufficient conditions for existence of a fault-tolerant guaranteed cost controller design a controller. 2) study the fault-tolerant guaranteed cost control problem for nonlinear singular systems with time delays, Lyapunov stability theory, derived class system sufficient condition to ensure the integrity and stability of the system in the event of actuator failure, design can be achieved when the system fails to maintain stability and to meet the dual goals of our established performance indicators. controller. 3) In order to solve the the random system robust fault tolerant guaranteed cost control problem, design a state feedback controller, to solve the problem of stability in the case of failure to ensure the normal operation of the random system. The advantage of the stability properties of the design method and linear matrix inequality approach, to ensure the controller to achieve our predetermined control requirements.

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