一种基于DSP改进型永磁同步电机矢量控制系统研究

根据永磁同步电机转子磁场定向矢量控制理论,在分析传统控制方法存在问题的基础上,提出了一种在d、q轴电压控制方程式中引入交叉耦合项的改进型矢量控制方法。该方法提高了d、q轴电压控制精度,使控制系统在较宽的速度范围满足较高的控制精度要求。利用所提出的控制方法,完成了基于DSP的永磁同步电机伺服控制器的设计,实现了对永磁同步电机的位置、速度和转矩控制。通过实验验证了该方法的正确性。

Study of Vector Control System for Improved PMSM based on DSP

Based on the conventional theory of rotor field oriented vector control for permanent magnet synchronous machine(PMSM),an improved vector control strategy with cross-coupling terms has been presented in this paper.By adoptting the improved vector control strategy,the precision of voltage and speed controlled will be enhanced in a wider speed range.Based on the improved strategy,a PMSM servo controller with DSP has been set up.By using the controller,rotor-position controlling;speed controlling and torque controlling for PMSM have been achieved.The experimental results in the paper verify the improved strategy.