作者：苏芬平1，崔伟2
单位：1.北京航天科颐技术有限公司，北京 100091；
单位：2.中国航天科工集团第二研究院206所，北京 100854
中图分类号：TH115;TH12
文献标识码：A
文章编号：1006-883X(2018)07-0019-06
收稿日期：2018-06-06
摘要：设计了一种高精度转台，选用力矩电机直接驱动负载，既消除了齿隙回差又缩短了传动链，使机械结构简单紧凑，使控制系统具有反应速度快、线性度好，共振频率高等优点，提高了系统的稳定性及静态、动态控制精度。高精度转盘轴承和力矩电机配合使用，提高了转台的承载能力，并使转台结构简化。采用电磁制动器和齿轮副进行方位轴和俯仰轴的制动，起到断电制动作用。对转台的限位、自锁、报警等安全性和防护性能进行详细设计介绍。并通过有限元分析验证主要零部件的结构强度及计算谐振频率。
关键词：转台；高精度；力矩电机；转盘轴承
Analysis and Design of a High Precision Two-dimensional Turntable
SU Fen-ping1, CUI Wei2
1. Beijing Keyi Aerospace Technology Co.,Ltd, Beijing 100091, China; 2. China Aerospace Science and Industry Corporation Ltd. Second Research Institute 206, Beijing 100854, China
Abstract: A high precision turntable is designed in this paper. The torque motor is used to drive the load directly, which eliminates the backlash and shortens the transmission chain. So the mechanical structure is simple and compact, the control system has many merits such as quick response, good linearity and high resonance frequency and is improved in stability and static/dynamic control precision. High precision turntable bearing and torque motor are used together to improve the bearing capacity and simplify the structure of the turntable. The electromagnetic brake and the gears are used together for braking the azimuth shaft and pitch shaft, which has the function of power-off braking. The safety and protection performance of limit control, self-lock, alarm and so on are introduced in detail. The structural strength and the resonance frequency of the main components are verified with Finite element analysis.
Key words: turntable; high precision; torque motor; turntable bearing
阅读全文
备注：2018年 第24卷 第07期