摘要
针对航空遥感器前端扫描反射镜旋转带来的像旋,提出了一种焦平面与扫描反射镜同步旋转的消旋方法。利用矢量法对像旋的方向进行了详细计算,得出消旋方向与扫描反射镜旋转方向相反的关系,提出了一种双轴系齿轮联动、双电机伺服控制的消旋方法,该方法精度高、像旋残留少,并对轴系的回转精度、齿轮的传动精度、双电机的伺服控制精度进行了检测。检测结果表明:轴系的回转精度为0.8″,齿轮的传动精度达到34″,双电机伺服控制精度优于1′。试验结果表明,用此种方法进行消旋,像旋的残留仅为0.03 mm,经过某项目成像验证,得到的图片便于拼接应用。
For the image spin resulting from the frontier scan mirror on aerial remote sensor,a new despinning method was put forward.The direction of image spin was calculated in detail by vector method,and the result that the direction of image spin and scan mirror spin was opposite was worked out.A method based on dual-shafting gear linked with dual-motor servo system was put forward.This method had the characteristics of high precision,less retained image spinning.Then the precision of rotating,gear transmission and double motor servo control was checked.The measuring results show that precision of axle rotation is 0.8″,precision of gear transmission is 34″,and precision of double motor servo control is better than 1′.The test result shows that after applying this method,the retained image despinning is only 0.03 mm,from photographing on the project.The photograph obtained is tractability applied on optical assembly.
出处
《红外与激光工程》
EI
CSCD
北大核心
2012年第9期2396-2400,共5页
Infrared and Laser Engineering
基金
国家863计划(2006AA06A208)
中国科学院知识创新领域前沿项目(070Y32R070)
关键词
像旋
扫描反射镜
矢量法
双电机伺服控制
image spin
scan mirror
vector method
dual-motor servo control
