为实现对空间动态目标的稳定跟踪, 介绍了一种高精确度双框架结构伺服系统, 通过标定提高了其指向精确度。利用旋转变压器作为角度位置传感器, 通过激光测距机和相机实现远场目标的稳定跟踪。利用高精确度单轴转台、激光测距机和平面反射镜对伺服系统双框架指向精确度进行标定实验测量。针对伺服系统几何误差, 对获得的采样数据进行分段直线拟合, 并写入控制程序。对测量数据进行分段检索定位, 通过拟合直线参数对数据进行修正。实验结果表明, 标定后的双框架伺服系统指向精确度优于 16", 可有效提高伺服系统指向精确度。

In order to achieve the stability tracking of the spatial dynamic target, a high-precision double gimbals servo system is introduced and its pointing accuracy is improved by the calibration experiment. The resolver is used as the angle position sensor in the servo system which can realize the steady tracking of the far-field target by the laser rangefinder and the camera. The pointing accuracy of the servo system is measured by using the high-precision single-axis turntable, laser rangefinder and plane mirror. For the geometric error of servo system, the sampled data is fitted by sectional line and written into the control program. The measurement data is segmented and positioned, and is corrected by fitting the straight line parameters. The experimental results show that the pointing accuracy of double gimbals servo system has reached 16". This method can effectively improve the pointing accuracy of the servo system.