Design And Simulation An Observer-Based Controller For Nonlinear System Based Feedback Linearization
: In nonlinear systems, using a conventional controller cannot improve the system behaviors with an acceptable accuracy. Therefore, to meet a specified specifications modification in system structure and in controllers must be done. In this paper an adaptive approach (e.g. Linear Quadratic Optimal State Estimator Integral Control [LQOSEIC]) is used in such a way to make a linearized system model that operate as a model reference for the nonlinear system and provides the best performance for the nonlinear system.
Key word: Nonlinear system, Linearized system, PID controller, LQR, Integral control, Observer.