王帅,曹玉岩.音圈电机型快速反射镜的驱动控制系统设计[J].电子测量与仪器学报,2017,31(7):1115-1121
音圈电机型快速反射镜的驱动控制系统设计
Design of control system for fast steering mirror driven by voice coil actuator
  
DOI:10.13382/j.jemi.2017.07.018
中文关键词:  快速反射镜  音圈电机  电流环  频率特性测试  谐振抑制
英文关键词:fast steering mirror  voice coil actuator  current loop  frequency response measurement  resonance suppression
基金项目:
作者单位
王帅 中国科学院长春光学精密机械与物理研究所长春130033 
曹玉岩 中国科学院长春光学精密机械与物理研究所长春130033 
AuthorInstitution
Wang Shuai Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China 
Cao Yuyan Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China 
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中文摘要:
      针对一种两轴四音圈电机驱动的快速反射镜,提出了一种驱动控制方法。该方法为每个电机配置一个高带宽的电流环,通过控制电流给定量的符号和大小,实现同一轴上两台电机的同步推挽运动;为了改善系统阻尼,抑制谐振,提高响应频率,基于快速傅里叶变换(FFT)谱分析的方法,精确测量了快速反射镜传递函数,并引入一个双二阶型校正函数,对快速反射镜的开环响应特性进行改善。实际测试结果表明:快速反射镜高达20 dB的谐振峰得到有效抑制,-3 dB响应带宽由校正前的118 Hz提高到177 Hz,稳定时间由原来的151 ms降低到3.5 ms,超调量由原来的83.3%降低到1.51%,快速反射镜的动态响应得到明显改善,证明了该方法的有效性。
英文摘要:
      Aiming at the fast steering mirror driven by four voice coil actuators, a drive control method was proposed in this paper. The high bandwidth current loop was designed for each motor, and the push pull motion was realized by changing the current direction and magnitude. In order to improve the system damping and suppress the mechanical resonance, accurate transfer function was identified based on FFT analysis, and then a compensator with a biquad filter was introduced. The test results show that the 20 dB resonance peak is effectively suppressed, -3 dB bandwidth is increased from 118 Hz to 177 Hz, the setting time is reduced from 151 ms to 3.5 ms, the overshoot is reduced from 83.3% to 1.51%. And the dynamic response of the fast steering mirror is improved obviously, which proves the validity of this method.
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