Abstract
In large antenna servo control systems, Linear Quadratic Gaussian (LQG) controller is superior to the proportional integral (PI) controller in terms of stability, rapidity and wind disturbance suppression. However, there is still no deterministic method to design the weight matrixes that affect the performance of LQG controller. To solve this problem, a method based on the artificial bee colony (ABC) algorithm is proposed, which aims at optimizing the close-loop system transient response performance. Global searching and local searching are conducted in each iterative step in the ABC algorithm so that searching efficiency is greatly improved. Applied in a weight matrixes optimization problem for a large antenna servo with LQG controller, the algorithm is satisfactory in simulation result, the control effect is better than that based on the trial and error method.
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