一种高精度方位驱动装置的设计与计算

作者：兴涛 日期：2009-11-16/span> 浏览：3230 查看PDF文档

一种高精度方位驱动装置的设计与计算

兴涛
(航天恒星空间技术应用有限公司，陕西 西安 710077）

摘要：针对天线座方位驱动装置既要输出一定的转矩又要满足一定的转动精度要求，设计了一种高精度方位驱动装置，该装置巧妙地利用了谐波齿轮柔轮内部的空隙和盘式步进电机的原理，并将二者融为一体，不但缩小了体积，而且提高了回转精度。用虚位移法计算了电磁转矩和电磁吸力，用摩擦定律计算了摩擦转矩，进而计算出输出转矩。研究结果表明：该装置可以作为卫星便携站等小型天线的方位转动装置。
关键词：方位驱动装置；虚位移法；电磁力；输出转矩
中图分类号：TM303.5文献标识码：A文章编号：1001-4551(2009)10-0083-04

Design and calculation of a highprecision azimuth driving mechanism
XING Tao
(Space Star Aerospace Technology Applications Co. Ltd., Xian 710077, China)
Abstract: Aiming at satisfying the requirements of enough torque and precision, a highprecision azimuth driving mechanism was designed. The internal space of the soft wheel of a harmonic gear and the principle of a disc type stepping motor were used and united smartly. Not only the size was reduced, but also the rotation accuracy was improved. The electromagnetic torque and force were calculated with virtual displacement method. The friction torque was done with friction law. And then the output torque was calculated. The results indicate that the device can be used as azimuth driving mechanism of a portable satellite station and other small antennas.
Key words: azimuth driving mechanism; virtual displacement method; electromagnetic force; output torque
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