Observer based state feedback control of DC machine

In this paper an observer based state feedback controller of a DC machine is proposed. The controller is designed to eliminate the saturator used for limiting the starting current. Actuator saturation anti-windup and other nonlinear effect are hence eliminated. The controller supports short term over load capacity which is not possible in conventional PI controller with a saturator. The proposed scheme is simulated in Matlab/Simulink. The controller designed is found to be satisfactory and robust over wide range of operating condition and parameter variations.