This paper focuses on the design and simulation of an Internal Model Control (IMC) Strategy for position control in AC servo motor. The dynamic second order transfer function model of the AC servo motor is derived. Based on the model parameters, the internal model controller parameters are computed and simulated in MATLAB Simulink. The performance measures of the controller are analyzed in terms of tracking error. A robust stability analysis of the proposed control strategy is also tested. Lastly, the simulated results of IMC are compared with PID controller results and main conclusion; by using IMC the best results may be achieved and also there is no need to effort for tuning PID parameters.

Full text: IJEIR-1470_Final.pdf