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标题：基于自抗扰控制的电流环控制器设计 |
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作者：赵瑞，闫剑虹 |
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| 2019年第3期 访问次数：267次 |
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摘要：电流环是影响基于永磁同步电机的三闭环串级位置伺服系统控制性能的关键环节，而其控制品质受多种因素影响。小惯量位置伺服过程具有位置给定小、速度变化快和电流响应要求高的特点，针对反电势干扰和环路延时的问题，对一阶通用自抗扰控制算法进行适当改进，设计了带输出微分预估器的电流环控制器。利用Matlab/Simulink搭建仿真模型，对控制算法进行验证，结果表明：设计的电流环自抗扰控制算法较传统PI控制算法能更好的补偿反电势干扰的影响，同时具有良好的输出滤波和预测效果。
关键词：永磁同步电机；电流环；自抗扰控制；反电势干扰；环路时滞
Abstract: Current loop is the key to the threeloop cascaded servo control system based on permanent magnet synchronous motor, and its control quality is influenced by several factors. In view of the small position reference, rapid changing of velocity and high performance demanded in the position servo system with small inertia, an improved active disturbance rejection controller with backEMF disturbance and loop delay into consideration was developed to implement highprecision current tracking. Simulations results using Matlab/Simulink show that compared with common PI algorithm, the proposed algorithm can not only compensate backemf disturbance, but achieve a good effect on filtering and output predicting.
Key words: PMSM; current loop; active disturbance rejection control (ADRC); back EMF disturbance; loop delay
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