基于定角测时技术的激光陀螺测试转台速率精度测试装置

Rate Accuracy Test Device of Laser Gyro Test Turntable Based on Fixed Angle and Time Measurement Technology

为了提高激光陀螺测试转台的速率精度和速率稳定性,研制了定角测时装置。该装置以高精度时钟为基准对转台轴角数据采用统一编码,并产生度脉冲和周脉冲信号。以度脉冲为固定的角度间隔,对时钟脉冲进行计数,由计算机读取固定角度间隔的时间码,并根据国标要求计算出速率精度和速率稳定性。测试结果表明,采用该技术后激光陀螺测试转台的速率精度和速率稳定性误差减小到原来的十分之一。该技术可以有效地消除激光陀螺测试转台速率精度和速率稳定性测试环节带来的误差,提高激光陀螺测试转台速率精度和速率平稳性。

In order to improve the rate accuracy and rate stability of the laser gyro test turntable,a fixed angle time measuring device is developed in this paper.The device uses the high-precision clock as the reference to uniformly encode the axis angle data of the turntable,and generates degree pulse and cycle pulse signals.The clock pulse is counted with the degree pulse as the fixed angle interval,and the time code of the fixed angle interval is read by the computer.The computer calculates the rate accuracy and rate stability according to the requirements of the national standard.This technology can effectively eliminate the errors caused by the rate accuracy and rate stability of the laser gyro test turntable,and improve the rate accuracy and rate stability of the laser gyro test turntable.After using this technology,the rate accuracy and rate stability error of the laser gyro test turntable are reduced to one tenth of the original.