第25卷第5期 2017年5月
文章编号1004-924X(2017)05-1281-10
光学精密工程
Optics and Precision Engineering
Vol.25No.5
May 2017
航空光电稳定平台质量不平衡力矩的前馈补偿
申帅1.2，张葆1*，李贤涛1，张士涛1,2（1.中国科学院长春光学精密机械与物理研究所
中国科学院航空光学成像与测量重点实验室，吉林长春130033：
2.中国科学院大学，北京100049）
电流反馈、速度反馈、位置反馈的三闭环控制系统提出了一种基于系统模型的质量不平衡力矩前馈补偿方法。该方法通过标定平台质量偏心，利用加速度传感器获取平台加速度信号来对平台的质量不平衡力矩进行前馈补偿，实现对平台质
后系统的扰动隔离度至少提高了6.4dB：相对于利用扰动观测器对质量不平衡力矩进行补偿的传统补偿方案，引人前馈补偿的光电稳定平台系统不仅在低频段补偿效果提升约12.9dB，而且克服了扰动观测器在高频时不能补偿质量不平衡力矩带来的影响，使平台在全频段的扰动隔离度都大幅提高，视轴能更好地稳定在惯性空间内，具有较高的实用性和使用价值。
关键词：光电稳定平台；质量不平衡力矩；前馈补偿：高频振动:扰动隔离度
中图分类号：V243.5；TP273
文献标识码：A
doi:10.3788/OPE.20172505.1281
Feedforward compensation of mass unbalance moment
forairbornephotoelectric stabilizedplatform SHEN Shuail.2,ZHANGBaol+,LIXian-tao',ZHANG Shi-taol.2
(1.KeyLaboratory of AirborneOptical Imaging and Measurement,Changchun Institute of Optics FineMechanics and Physics,ChineseAcademy of Sciences,Changchun 130033,China:
2.University of Chinese Academy of Sciences,Beijing 100049,China)
*Correspondingauthor,E-mail :cleresky@vip.sina.com
Abstract: The effect of mass unbalanced moment under high-frequency vibration of a helicopter on the performance of a photoelectrical stabilized platform was discussed. A system model based feedforward compensation method for mass unbalanced moment was proposed on the basis of a three closed-loop control system with current feedback, velocity feedback and position feedback on the traditional photoelectrical stabilized platform. By calibrating the mass eccentricity of the platform, the acceleration signals of the platform were obtained by a acceleration sensor to perform the feedforward compensation to suppress the mass unbalanced moment of the platform. The experiment results show that the disturbance isolation increases at least 6. 4 dB after inducing the feedforward compensation
收稿日期：2016-07-21；修订日期：2016-10-18
基金项目：国家"863"高技术研究发展计划资助项目（No.2013AA122102)