摘要
针对由于测角传感器的精度不断提高,转台的回转精度和稳定性成为制约系统精度的主要因素问题,对转台轴系设计进行了深入分析研究。完成了一维精密转台的轴系结构设计,并对其进行了有限元分析。在此基础上,通过静力学分析,研究了主要零部件对轴系回转精度的影响情况;通过动力学分析,研究了轴系的固有频率及其振型。搭建了转台测角精度测试平台,采用了自准直仪结合多面棱体获取角度测量误差,并进行谐波误差补偿。研究结果表明,最终转台的角度精度达到±1.5″,证明该转台设计是可行的。
Aiming at the problems of rotary precision and stability of the turntable become major factors in the system accuracy with the development of the precision of angle sensor,the turntable shafting design was investigated. The shafting of one-dimensional precision turntable was designed and its finite element analysis was conducted. The influence on the rotary precision of the shafting caused by the main components was studied using static analysis; the dynamics of natural frequencies and mode shapes of shafting was analyzed. An angle measurement precision test platform of turntable was built. The autocollimator combined with multi-mirror polyhedron was used to get angle measurement error directly,and the error compensation of harmonic analysis was studied. The results indicate that the final angle precision reach to± 1. 5″,proved the design of turntable is feasible.
出处
《机电工程》
CAS
2015年第1期27-31,共5页
Journal of Mechanical & Electrical Engineering
基金
国家重大科学仪器设备开发专项资助项目(2011YQ12002)
国家自然科学资金青年资助项目(61307095)
关键词
系统精度
精密转台
有限元分析
误差补偿
system accuracy
precision turntable
finite element analysis
error compensation
作者简介
石冬（1988-），男，安徽安庆人，主要从事多维转台的优化设计与测角技术方面的研究．E-mail：shidong135@sohu．com
通信联系人：周维虎，男，教授，博士生导师．E-mail：zhouweihu@aoe．ac．cn
