双轴转台角速率检定装置设计  

Design of A Two-axis Position and Rate Rotary Table Angular Rate Calibration Device

作　　者：毕鹏[1] 闫道广[1] 岳明桥[1] 

机构地区：[1]中国人民解放军92493部队89分队

出　　处：《计测技术》2017年第3期62-65,共4页Metrology & Measurement Technology

摘　　要：设计了一种由圆光栅、读数头、细分电路、信号采集系统和专用检定工装构成的检定装置,实现了双轴速率位置转台角速率误差检定。设计了龙门滑轨式双读数头调整支架,采用两路光栅圆周对径安装的方式,解决了检定过程中圆光栅环安装偏心引入误差大的难题;采用莫尔条纹细分技术设计了光栅测角信号采集及处理电路,降低了光栅测量细分误差;研制可调式专用芯轴等检定工装,简化了测角系统和被测转台的装配工艺,提高了检定工作效率。A calibration device which can calibrate angular rates of the two-axis position and rate rotary table is designed in this paper,and it is composed of circular grating,reading head,subdivision circuit,signal collection system and special calibration fixture. A portal frame with sliding rail and two reading heads is designed to eliminate the fix eccentricity error of circular grating ring. The morie fringes subdividing technology is used in the design of the signal collection and processing circuit,which reduces the error of the grating measurement greatly. It also designs a special calibration fixture with tunable dabber,which can simplify the installation and improve the efficiency of the calibration.

关 键 词：惯导 转台 计量 角速率 光栅 

分 类 号：TB922[一般工业技术—计量学]