Closed Loop Control Of Active Magnetic Bearing Using PID Controller

Abstract

Expanding requests for fast, frictionless applications gives AMB an extremely earlier subject of investigations. Because of their nonlinearities and open loop instability, utilization of controller is important to get a steady task of bearing. In this paper, a general mathematical equation is depicted to figure the controller parameters, for this PID controlled closed loop AMB. The transfer function of AMB is itself unsteady with a pole on the right-hand side of the s-plane. Subsequently, PID controller is intended to invalidate the impact of that RHS sided pole of AMB. For that, the P, I and D parameters of the controller which is in a closed loop with AMB and feedback gain is mathematically examined with some assumed values to make the closed loop stable and a general equation is inferred to compute these controller parameters. At long last, utilizing those computed controller parameters values the imitated is performed in MATLAB SIMULINK. Where this closed loop is observed for stability and transient examination is performed to figure transient state parameters like-Peak time, Peak overshoot, Rise time, steady state error and so on.