介绍了基于永磁同步电机的交流伺服系统.针对直接转矩控制的脉动问题,进行了分析,提出了基于SVM-DTC的控制策略,该策略利用电子电压在定子磁链坐标系的分量控制电磁转矩和磁链,结合空间矢量调制控制逆变器开关,并基于DSP2812搭建了硬件实验平台,通过MatLab仿真和实验波形表明,SVM-DTC的控制策略可以有效减小转矩、磁链脉动.%This essay introduces the AC servo system of the PMSM, and put forward a new control strategy based on SVM-DTC, aiming at the torque pulsation of the direct torque control (DTC). This strategy uses compo-nent of electron voltage in the stator flux linkage coordinate to control electromagnetic torque and flux linkage, in-tegrating SVPWM to control the switch of inverter. Besides, hardware platform is built using DSP2812. According to the simulation of MatLab and the wave form of the test, SVM-DTC can reduce the fluctuation of torque and flux linkage effectively.
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