船载测量设备轴角编码器误差修正方法研究

Research on Error Correction in Axial Angle Encoder of Ship-borne Measuring Equipments

船载无线电测量设备进行标校时,几套测量设备指向固定目标所测得的俯仰指向角度经修正后与大地测量所得角度存在约20″到30″的误差。多次检测后表明:该问题主要由设备俯仰轴角编码器误差导致。因此对传统的轴角编码器精度的检测方法提出了新要求,增加了检测密度和范围,并拟合出了编码器误差修正公式。经过试验任务数据验算,该方法比以往的修正方法效果更好,该测量设备的俯仰测角总精度在原来的基础提高了约15″。

When ship-borne wireless measuring devices are measuring and calibrating, they have 20＂ to 30＂ error value between the angle values got by measuring devices and that got by the earth measuring. According to tests, the problem is mainly caused by the error of axis angle encoder. So, new requirements were made for detection method of the axial angle encoder, detection density and scope increased, and correction formula of the encoder error was fit. After the test checking, the effect is better than the previous methods, the total accuracy of the measuring equipment has been improved by about 15＂.