摘要
车铣中心用的电主轴永磁同步电机(PMSM),要求在低速阶段具有C轴功能,能够实现恒转矩控制。在高速阶段电机以弱磁控制方式运转,此时电机工作在恒功率状态。本文首先建立同步电机的动态模型,分析了最大转矩/电流控制过渡到弱磁控制过程中定子电流的变化轨迹,进而设计弱磁控制算法,并提出高性能电流解耦调节器和电压补偿器改善控制性能。
Spindle Permanent Synchronous Motor, used in mill-turning centers, requires C-axis function in low speed with constant torque output, and transfer to field-weakening control in high speed with constant power output. In this paper, the dynamic model of PMSM is set up. Current vector trajectory in the transition of maximum torque-per-Amp control mode to field-weakening control mode is analyzed, and then the control strategy is designed. At the same time high performance dccoupling current controller and voltage command compensation are presented to enhance the system performance.
出处
《微计算机信息》
北大核心
2006年第12S期141-143,共3页
Control & Automation
基金
广东省自然科学基金项目(011626)
关键词
电主轴
永磁同步电机
弱磁控制
Spindle,Permanent synchronous motor,field-weakening
