研究了正弦波永磁同步电机驱动的空间光学遥感器扫描控制系统。采用复合控制与微分负反馈相结合的控制策略, 实现了扫描镜的低速高精度往复运动。分析了扫描镜运动的数学模型, 建立了d-q坐标系下的永磁同步电机数学模型; 采用id=0矢量控制策略,在MATLAB/SIMULINK环境下搭建了基于空间矢量脉宽调制技术的控制系统仿真模型, 设计了电流环、速度环和位置环调节器, 给出了仿真结果。实验验证显示: 采用复合控制后, 仿真得到恒速运行的平均速度误差由1.27％优化到0.92％, 扫描镜在恒速扫描过程中稳态平均角速度误差为2.06%, 满足扫描镜系统速度精度优于5％的设计要求。理论分析、仿真和实验证明: 该控制方法能够较好地改善控制系统的动态特性, 具有调节时间短、超调小和动态响应准确等优点。

A scanning control system for space optical remote sensors based on the sinusoidal Permanent Magnet Synchronous Motor (PMSM) was explored in this paper. By a control strategy combining composite control with differential negative feedback, the reciprocating motion of a scanning mirror with low velocity and high precision was achieved. The mathematical model of scanning mirror motion was analyzed, and a mathematical model of PMSM under the d-q coordinate system was established. By using the id=0 vector control strategy, the simulation model of the control system based on space vector pulse width modulation was built using the MATLAB/SIMULINK, and the current, speed and the position loop were designed. A simulation and an experiment were performed, the results show that the velocity average error in the simulation has optimized from 1.27% to 0.92% and the steady-state mean angular velocity error has arrived 2.06% when the scanning mirror is at a constant speed steady state after combing control. Theoretical analysis and simulation experiments show that the dynamic characteristics of control system can be improved by the proposed control method, and it shows the advantages of short regulation time, small overshooting and quickly accurate dynamic response.