High Positioning Response Control for Servo Drive System Based on Decoupled Extended State Observer
摘要
In order to improve the production efficiency of industrial equipment, how to design servo system to further reduce the position overshoot and shorten the positioning time has become the focus of current research. In this paper, a high positioning response control scheme based on decoupled extended state observer is proposed. Firstly, the coupling problem of traditional extended state observation is analyzed, and a speed controller based on decoupled extended state observer is designed, which achieves the decoupling of tracking performance and anti-disturbance performance, and simplifies the tunning of control parameters. Secondly, aiming at the problem that the overshoot of the position servo system based on the former designed speed controller becomes larger, a position control method with compensation controller is proposed, which improves the bandwidth of the position loop, and has the same characteristics as the first order inertia system in response to the command, with the advantage of small overshoot. The experimental results show that the proposed control scheme can reduce position overshoot, shorten positioning time, and has good anti-disturbance performance.