位标器陀螺转轴静平衡测试系统设计.pdf

2014年5月
北京航空航天大学学报
May 2014
第40卷第5期
Journel of B
University of Aeronautics and Astronautics
Vol 40 No 5
位标器陀螺转轴静平衡测试系设计
杨辉赵剡李敏
北京航空航天大学仪器科学与光电工程学院,北京100191)
摘
要:为了对位标器陀螺转轴的静不平衡量及其分布的角位置进行测试,研制了
种位标器陀螺转轴静乎筷测试系统,该系统通过调整夹具的方向使得位标器的被测轴与转
台水平轴平行安装,测控系统驱动转台依次转至预先设定的36个锁定角位置处,在每个锁定
角位置处,由伺服控制信号锁定位标器的两个轴后,驱动另外一个被测轴进行正弦小角度转
动,通过对被测轴驱动电流汎量量的多周期积分就可以得出被测轴此时的静不平衡力矩.转合
顺次转过一周后,通过对被测轴所测36个静不平衡力矩及转合锁定角度的最小二乘拟合,可
以确定出被测轴的静不平衡量大小及其分布的角位置.最后进行了加载实验及其重复性测试
实验,结果表明该测试系统重复测量的静不平衡量测试橢度能达到±0.25mN·m,角位置测
试精度能达到±2°,具有较高的测试精度
关键词:位标器陀螺;质量偏心;静平衡;转矩常数;最小二来拟合
中图分类号:TP2
文献标识码:A
文章编号:1001-5965(2014)050618-06
Design of static balance testing system for coordinator gyro rotation axis
Yang Hui Zhao Yan Li Min
School of Instrumentation Science and Opio-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China)
Abstract: A static balance testing system for coordinator gyro rotation axis was desired to do a test about
the static unbalance value and distributed position angle. In this system, the measured axis of the coordinator
gyro was mounted parallel with the horizontal turntable axis by the direction of the fixture. Measurement and
control system drove the turntable turned to 36 lock horns, which was set in advance. Then in every lock an
lar position, two axes of the coordinator were locked with the servo control signals, and another measure
axis was drove to rotate with sine small-angle in the same time. The static unbalance moment was calculate
with the multi-cycle integration of the driving current amount. After a round rotation, 36 position values were
measured, which were then used to deduce the static unbalance value and the distribution of angular position
with lcast-squarcs fitting method. Loading test was carried out repeatability. According to the result, the static
unbalance measurement precision can reach +0. 25 MN.m and the angular position measurement precision
can reach *2@, which shows that the system has a good performance
Key words: coordinator gyro; mass eccentric; static balance; torque constant; least-square fiting
位标器是利用陀螺的进动性和定轴性来调整静不平衡,不平衡量如果太大,就会引起光轴的绕
和稳定导弹导引头光学系统的装置.通常由于设动,使输出目标信号不稳定而影响导弹的命中精
计误差、材料缺陷、加工与装配误差等原因会造成度和飞行平稳度,因此,为提高导弹的制导精度和
位标器陀螺转轴产生质量偏心,从而引起位标器可靠性,对位标器的静不平衡特性进行研究和测
收稿日期:2013-06-27;网络出版时间:2013-11-2010:30;DOI:10.13700/j-bha.1001-5965.2013.0367
网络出版地址:ww.cnki.net/ kcms/ detail,/11,2625.V.20131120.1030.018.html
基金项目;航空科学基金资助项目(20110112007,20100818018)
作者简介:杨辉(1983-),男,陕西宝鸡人,博士生,happyncu@aspe.bua.edu.cn
万方数据