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基于伪微分和加速度反馈的航空光电稳定平台控制方法

Control scheme of aerial photoelectrical stabilized platform based on pseudo-derivative and acceleration feedback

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摘要

为了提高航空光电稳定平台的扰动隔离度,在传统平台的电流反馈、速度反馈、位置反馈的基础上增加了高增益加速度反馈,并利用伪微分反馈的控制技术设计出新的控制器来代替传统的速度反馈的PI控制器。实验结果表明,在模拟转台以1°、0~2.5 Hz的正弦干扰下,相对于传统的航空光电稳定平台,基于伪微分和加速度反馈控制的光电稳定平台的阶跃响应超调量减小了约7.8%,扰动隔离度提高了约8.7 dB; 相对于基于PI控制器和加速度反馈控制的航空光电稳定平台,基于伪微分和加速度反馈控制的光电稳定平台的阶跃响应超调量减小了约2.6%,且平台的过渡过程加快。该控制系统能够有效地抑制扰动力矩的影响,具有较好的通用性和实用性。

Abstract

In order to improve the disturbance isolation degree of aerial photoelectrical stabilized platform, a new controller is designed to replace the traditional PI controller. The new controller utilizes the pseudo-derivative feedback (PDF) control technology and high-gain acceleration feedback based on current feedback, speed feedback and position feedback on the traditional platform. When flight simulator is influenced by 1 degree, 0-2.5 Hz sinusoidal interference, compared with the traditional aerial photoelectrical stabilized platform, the step response overshoot of the platform based on PDF and acceleration feedback system decreases by about 7.8%, and the disturbance isolation degree increases by about 8.7 dB. Besides, compared with the aerial photoelectrical stabilized platform based on PI controller and acceleration feedback control system, the step response overshoot of the platform based on PDF and acceleration feedback system can reduce by about 2.6%, and the transition process of the platform is faster. The control system can effectively restrain the influence from disturbance torque, and this makes the system more common and useful.

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中图分类号:TP273

DOI:10.3788/co.20171004. 0491

所属栏目:光学仪器与测试

基金项目:国家高技术研究发展计划(863计划)项目 (No.2013AA122102)

收稿日期:2017-02-17

修改稿日期:2017-03-27

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申帅:中国科学院 长春光学精密机械与物理研究所,吉林 长春 130033中国科学院大学,北京 100049
张葆:中国科学院 长春光学精密机械与物理研究所,吉林 长春 130033
李贤涛:中国科学院 长春光学精密机械与物理研究所,吉林 长春 130033
张士涛:中国科学院 长春光学精密机械与物理研究所,吉林 长春 130033中国科学院大学,北京 100049

联系人作者:申帅(shenshuaiharry@163.com)

备注:申帅(1991-),男,河北保定人,硕士研究生,2014年于哈尔滨工业大学获得学士学位,主要从事航空光电稳定平台视轴稳定方面的研究。

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引用该论文

SHEN Shuai,ZHANG Bao,LI Xian-tao,ZHANG Shi-tao. Control scheme of aerial photoelectrical stabilized platform based on pseudo-derivative and acceleration feedback[J]. Chinese Optics, 2017, 10(4): 491-498

申帅,张葆,李贤涛,张士涛. 基于伪微分和加速度反馈的航空光电稳定平台控制方法[J]. 中国光学, 2017, 10(4): 491-498

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