Design of a Linear and Non-linear controller for Induction Motor

This paper describes the controller design for the most widely used induction motors using advanced linear, non-linear and adaptive control techniques. Generally induction machine is a nonlinear one. Therefore, initially the considered nonlinear plant is linearized. Then PID control technique is applied to the considered induction motor along with LQR control law is also designed for the obtained linearized system. The non-linear plant dynamics are linearized by using dynamic feedback linearization techniques. By providing all these aspects, the speed control of induction motor is achieved in a wide range. To observe speed control, sinusoidal Ramp and Linear signals were taken as reference. Simulations are carried out and the performances of the designed controllers are compared. The design of these controllers is implemented in MATLAB/SIMULINK software.