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Anti-windup Active Disturbance Rejection Control and its Application to Antenna Servo Systems

In this paper, the active disturbance rejection control (ADRC) with an anti-windup compensation strategy is presented. Due to its effectiveness and robustness, ADRC has been applied to many control systems. However, physical systems always have limited control capacity which causes actuator saturation. To overcome this difficulty, the anti-windup compensation strategy is adopted to guarantee the desired performance of the closed-loop systems. This technique can be applied to design servo systems with actuator saturation for asymptotic target tracking. Experimental results for antenna servo system are given to verify the effectiveness of the theoretic results.