红外成像器视线漂移的自适应补偿研究  

Adaptive compensation of IR camera line of sight drifting

作　　者：张建立[1] 冯如鹏[1] 

机构地区：[1]哈尔滨工业大学惯导中心,黑龙江哈尔滨150001

出　　处：《红外与激光工程》2006年第4期384-387,共4页Infrared and Laser Engineering

摘　　要：成像器视线稳定回路设计是一种高精度、高动态响应的伺服回路设计,对于速率陀螺稳定方案,视线的漂移角处于开环状态,由于轴间摩擦耦合、几何约束耦合,以及速率陀螺传感器测量精度的影响,成像器视线在载体扰动的条件下会发生视线角漂移,影响目标的识别。为实现较好的视线稳定精度,提出了一种自适应前馈补偿方案,通过自适应神经网络预测出光轴的漂移角,采用前馈实现对视线漂移的实时补偿,通过与单独的速率陀螺稳定方案、积分前馈补偿方案进行试验对比,结果表明采用自适应预测补偿方案,视线漂移明显减小,满足系统的指标要求。The stabilization loop design of the infrared camera line of sight was a high stabilization accuracy and good dynamic characteristics design.For the speed gyro stabilization scheme, the drifting angle of the camera line of sight was in the open loop. Because of the friction between bearings, geometric constraint coupling and accuracy of the speed gyro,the infrared camera line of sight would drift on account of the carder disturbance. In order to restrain the infrared camera line of sight drifting, an adaptive compensation way based on LMS algorithm for the stabilization loop of the camera line of sight was presented,in which the angle of line of sight drifting was estimated with the adaptive nerve network. Compared with alone speed gyro stabilization scheme and integral feed forward compensation, the suggested adaptive compensation scheme is the best, meeting the system＇s demands

关 键 词：视线稳定 自适应补偿 稳定回路 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]