永磁同步电机传动系统电流环非线性自抗扰控制器的设计与稳定性分析

发布时间：2018-03-02 05:28

本文关键词： 永磁同步电机非线性自抗扰控制器描述函数稳定性分析　出处：《电工技术学报》2017年17期 　论文类型：期刊论文

【摘要】：高性能永磁同步电机伺服系统要求有快速响应的电流内环以保证系统的高动态性能,传统PI调节器容易出现超调及振荡调整过程。为实现对高性能永磁同步电机伺服系统电流环的精确控制,采用自抗扰控制器代替传统PI调节器,将电流环中电动势项和定子电阻压降项作为内部扰动量,其他未知扰动作为外部扰动量,设计了电流环非线性自抗扰控制器。与传统PI调节器相比,自抗扰控制器可以对系统内外部扰动量进行实时观测补偿,具有更好的系统抗扰动能力,可以更迅速、精确地跟随电流指令;为避免因控制器参数选取不合适而引起的电流环周期振荡,采用描述函数法对非线性自抗扰控制器取不同参数时电流环的稳定性进行了分析。通过仿真和实验验证了控制器设计的有效性。
[Abstract]:High performance PMSM servo system requires a fast response current loop to ensure the high dynamic performance of the system. The traditional Pi regulator is prone to overshoot and oscillation adjustment. In order to control the current loop of high performance PMSM servo system, the ADRC is used to replace the traditional Pi regulator. The EMF term and stator resistance voltage drop term in the current loop are taken as the internal disturbances and other unknown disturbances as the external disturbances. A nonlinear active disturbance rejection controller for the current loop is designed. Compared with the traditional Pi regulator, the nonlinear active disturbance rejection controller is designed. The ADRC can make real-time observation and compensation for the disturbance quantity inside and outside the system. It has better anti-disturbance capability and can follow the current instruction more quickly and accurately. In order to avoid periodic oscillation of current loop caused by improper selection of controller parameters, The stability of the current loop with different parameters of the nonlinear ADRC is analyzed by using the description function method. The effectiveness of the controller design is verified by simulation and experiments.
【作者单位】：广东工业大学自动化学院;
【分类号】：TM341;TP273

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