Nonlinear adaptive position control of an interior permanent magnet synchronous motor

This paper introduces a non linear position controller for an interior permanent magnet synchronous motor. The system model equations provide the basis for the controller which is designed using adaptive backstepping technique. Various system uncertainties are considered in the design. Using Lyapunov´s stability theory, it is approved that the control variables are asymptotically stable. The complete model is then simulated using MATLAB/Simulink software. Performance of the controller is investigated at different dynamic operations such as command position change, sudden load change and parameter variation