Diagnosis And Fault-tolerant Of Multiple Channel Faults In Two-dimensional Systems Based On Observer

After the entry of the post-industrialized society,nowaday the national economy is being booming.With the continuous improvement of technological progress and cognition,the scale and high-efficiency production methods replaced the original low-efficiency,workshop-style one gradually more than which is simple and extensive in the industrial revolution.What follows is the constant pursuit of system security and stability,the combination of theoretical research and the actual production process is in order to meet the economic development.Fault diagnosis and fault-tolerant control technology take reasonable remedial measure when system comes failure,providing strong support for safe production.On the one hand,fault diagnosis can effectively detect the occurrence of unknown faults,determine the location of occurrence,estimate the magnitude of the faults,and provide sufficient information for the fault compensation in the system.On the other hand,fault-tolerant control ensures acceptable stability and reliability in the event of a system failure.There are many different form of systems,the reason of the emphasis of the 2D system is widely used in various industrial fields and can provide effective solutions for many industrial problems.It is not only due to the practical application scenarios highlighted by the 2D system,but more importantly because of the richness of 2D system itself,especially the branch based on fault diagnosis and fault-tolerant control.This article is focused on the systematical study that the multi-channel faults which mainly contain sensor fault and actuator fault of two-dimensional systems is used how to estimate and compensate,the effective results of linear systems providing references for the nonlinear system and expanding to linear time-varying delay systems.It can be said that several common system situations involving multi-channel faults are included.In this paper,we use Lyapunov stability method and linear matrix inequality(LMI)method to study fault diagnosis and fault-tolerant control for three typical models that are 2D linear systems,2D time-varying delay systems and 2D nonlinear systems.Detailed arrangements and research results are as follows:In Chapter 2,we hope to solve the actuator/sensor fault compensation problem in 2D linear system by comparing the new and practical observer design scheme and estimating the state and actuator/sensor fault.Then in Chapter 3,we consider the active fault-tolerant control of actuator/sensor faults in 2D time-varying delay system,and give an effective observer design.Finally,with the help of Chapter 2 and Chapter 3,we discuss the reconstruction and compensation of actuator/sensor faults of a class of 2D nonlinear system,and a sufficient condition for the existence of a fault reconstruction observer with given H? performance indicators.