Robust H∞ optimal speed control of linear DC motor

The speed control ability of DC motor is affected by parameter variations and disturbance torque. In this paper, based on a linear matrix inequality (LMI) approach, the robust H
_infin
optimal control for DC motor with parameter variations is proposed, the stability and performance robustness are analyzed. In order to verify the validity of the proposed control scheme, simulation results are also presented, the results show that system has strong ability of preventing interference and high stability.