中国空间科学技术

中国空间科学技术 ›› 2021, Vol. 41 ›› Issue (2): 125-132.doi: 10.16708/j.cnki.1000-758X.2021.0030

• 技术交流 • 上一篇    

空间相机匀速扫描干扰补偿控制方法

张艾，林喆，李婧，李寅龙   

  1. 北京空间机电研究所，北京100094
  • 出版日期:2021-04-25 发布日期:2021-04-07

Disturbance rejection control for uniform scanning of space camera

ZHANG Ai，LIN Zhe，LI Jing，LI Yinlong   

  1. Beijing Institute of Space Mechanics & Electricity，Beijing 100094，China
  • Published:2021-04-25 Online:2021-04-07

PDF (PC)

246

摘要： 针对空间相机匀速扫描中的周期干扰，研究永磁同步电机（PMSM）抗扰控制问题。为了解决传统状态观测器与内模原理补偿方法形式复杂、计算量大的问题，结合敏感器测量输出和系统模型推导出干扰量，并在重构干扰的基础上，采用超前输入补偿策略快速抑制扰动影响。该方法形式简洁，计算量小，经数学仿真和试验验证，可有效抑制系统正弦扰动，改善稳态性能，减少相机抖动，满足空间成像需求。

关键词: 空间相机, 扫描控制, 永磁同步电机, 周期干扰, 推力波动

Abstract: Aiming at the periodic disturbance during uniform scanning of space camera，the disturbance rejection of permanent magnet synchronous motor（PMSM）was studied．In order to solve the problem that traditional state observer and internal model methods are complicated with large amount of calculation，a feedforward compensation method was deduced．First，the disturbance was deduced based on the sensor output and system model．Then the feedforward compensation strategy was adopted to suppress the disturbance quickly．Compared with other suppression methods，this method is simple and has less computation．Finally，numerical simulation and experimental results illustrate that the sinusoidal disturbance is rapidly diminished after using this feedforward compensation method，and the scanning accuracy of space camera is evidently improved．

Key words: space camera, scanning control, permanent magnet synchronous motor(PMSM), periodic disturbance, thrust ripple