一种帆板驱动机构用永磁同步电机微步控制方法

根据磁场定向矢量控制原理，提出一种永磁同步电机微步驱动控制策略.通过保持定子电流矢量幅值不变并均匀改变定子电流矢量的位置，获得大小不变位置均匀变化的定子磁势，从而实现太阳帆板的对日定向.试验结果表明采用所提出的微步驱动控制方法实现了太阳帆板模拟负载的驱动性能，并得出设计过程中应综合考虑整机效率和帆板驱动速度稳定度因素来选取转矩电流给定的结论，也进一步证明了控制方法的有效性，可用于工程实际.

A Permanent-Magnet Synchronous-Motor Micro-Step Control Method for Solar Array Drive Assembly

Based on the magnetic field oriented vector control principle, a micro step drive control strategy for the permanent magnet synchronous motor (PMSM) is proposed in this paper. By maintaining a constant stator current vector and evenly varying vector position, the amplitude of the stator MMF is unchanged while its position moves smoothly, so as to orient the solar array toward the sun. The results show that the proposed micro step drive control method achieves the drive performance when the solar array drive mechanism drives the simulated solar array load. The given torque current is suggested to be selected according to the power efficiency and solar array driving speed stability in the design and implementation process. The effectiveness of the control method is further confirmed. The control method can be used in engineering practice.