Fault Estimation And Fault-tolerant Control Of Switching Systems

The switched system is composed of multiple modes and switched signals.It is an important hybrid system with important theoretical research value and a wide range of practical application background.Research results for switched systems are constantly emerging,but the research results of the fault estimation and faulttolerant of switched systems are still very limited.In recent years,the complexity of modern control systems has continued to increase,and people's requirements for the safety and reliability of the system have also increased.Therefore,the problem of fault estimation and fault-tolerant control has been subject to many people attention and extensive research.This article will focus on the fault estimation and faulttolerant control of the switched system,mainly including the following aspects:The problem of switched system fault estimation based on the intermediate estimator is studied.First,an intermediate variable is designed,and the intermediate estimator is designed based on this,and then the intermediate estimator is used to estimate the fault of the switched system.Based on the Lyapunov function,the proposed theory is proved?to be able to?well estimate the actuator faults?and sensor faults?in the switched systems.The fault-tolerant control problem of the switched system is studied.Based on the results of the previous fault estimation,a fault-tolerant controller is designed to introduce the fault-tolerant controller into the system to compensate for the fault.Based on the fault estimation and fault-tolerant control methods,the system's actuator fault and sensor fault problem?in switched?systems?is effectively solved.The fault estimation and fault-tolerant control problems of switched systems with external disturbances are studied.The intermediate estimator can estimate the faults and disturbances well,and the fault-tolerant controller can be designed to compensate for the faults according to the results of the fault estimation.In the external In the case of external interference,the actuator fault and sensor fault in the switched system will be estimated and compensation for fault.A numerical simulation system is established to simulate and verify the control algorithm given in this article.The simulation results verify the effectiveness and feasibility of the algorithm.