基于简化干扰观测器的光电平台稳定与评估  

Inertial stability and evaluation of photoelectric platform based on a simplified DOB

作　　者：王福超[1] 田大鹏[1] 王昱棠[1] 

机构地区：[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,长春130033

出　　处：《国外电子测量技术》2015年第12期13-17,共5页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金(61304032)资助课题

摘　　要：单纯采用经典的比例-积分(proportion integration,PI)校正难以进一步提高航空光电平台惯性稳定性能。本文分析了影响稳定精度的主要因素,设计了基于简化干扰观测器(disturbance observer,DOB)的航空光电平台稳定控制算法。该方法由DOB和PI控制器构成,其中DOB采用陀螺反馈,利用等效变换实现,无需求取被控系统的逆模型。此外,本文提出一种基于隔离度测试的航空光电平台稳定性能评价方法。在实际系统中进行了惯性稳定实验,采用所提出的稳定控制方法获得了10μrad(RMS)的稳定精度,并且采用新方法的隔离度测试结果在30 Hz频带内的姿态扰动下较传统PI控制均有显著的提高。The inertial stabilization performance of aerial photoelectric platform is difficult to further improve only with classical Proportion Integration （PI） correction. The paper analyzed the main factors that affect the stabilization precision of the system, and designed an aerial photoelectric platform stabilization control algorithm based on a simplified disturb- ance observer （DOB）. The algorithm is composed of DOB and PI controller, the DOB adopts gyroscope as feedback, uti- lizes the equivalent transform to achieve and without calculates the inverse model of the controlled system. Furthermore, an aerial photoelectric platform stabilization performance evaluation method based on isolation degree test is proposed. Finally, the inertial stabilization experiment is conducted in actual system, and the proposed stabilization control algo- rithm reached 10 t, rad （RMS） stabilization precision, and also the isolation degree test results with new algorithm under 30 Hz band attitude disturbance has an obviously improvement than the conventional PI control.

关 键 词：光电稳定平台 稳定精度 干扰观测器 隔离度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]