Using LS-SVM inverse model on actuator fault diagnosis and accommodation for nonlinear systems

For general nonlinear reversible multiple-input multiple-output (MIMO) nonlinear systems, a new approach is used in actuator fault estimation and accommodation. The new approach primary uses inverse system method to estimate the value of actuator fault and accommodates the inverse model of plant according to the estimation value. The series system via inverse model and plant has to remain the same pseudo-linear system. It´s difficult to describe precisely the system in engineering actual. LS-SVM is used to identify the inverse model of nonlinear system, and it´s sure that the existence of error when using identification tool to establish the inverse model of the plant, the controller with good robust is used in system.