| 柔性轴在卫星光通信中的使用与优化设计 |
| |
| 引用本文： | 张福瑞,阮萍,韩俊锋.柔性轴在卫星光通信中的使用与优化设计[J].红外与激光工程,2019,48(8):818001-0818001(7). |
| |
| 作者姓名： | 张福瑞 阮萍 韩俊锋 |
| |
| 作者单位： | 1.中国科学院西安光学精密机械研究所,陕西 西安 710119; |
| |
| 基金项目： | 中国科学院研究所135项目（Y655811213） |
| |
| 摘 要： | 针对卫星光通信粗跟踪系统中机械轴存在空回、轴系摩擦、轴间隙的不足的问题，提出采用柔性轴支撑光端机的方案。首先介绍了采用柔性轴卫星光通信的原理；然后分析了柔铰工作方向的柔度、最小切割处应力特性；从关键点挠度出发推导了回转误差角表达式，并分析了回转误差角对捕获性能的影响；在柔性轴特性研究的基础上，采用遗传算法对柔性铰链进行了优化设计。设计结果为:柔性铰链工作方向柔度0.768 rad/Nm，最小切割处应力1.768e+8 Pa，回转误差角343 rad；最后采用有限元法对设计结果进行了验证，三项指标的相对误差均小于3.5%，证明设计是可靠的。研究内容可为采用柔性轴的卫星光通信系统设计提供一定参考。
|
| 关 键 词： | 卫星光通信 柔性轴 遗传算法 回转误差角 |
| 收稿时间： | 2019-03-05 |
Application and optimum design of flexible shaft in satellite optical communication |
| |
| Affiliation: | 1.Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China;2.University of Chinese Academy of Sciences,Beijing 100049,China |
| |
| Abstract: | For the shortcomings of backlash shaft, friction and clearances in coarse tracking system of satellite optical communication, a scheme of using a flexible shaft to support the terminal was presented. The principle of flexible shaft in satellite optical communication was presented. Then the characteristics of flexibility in working direction and stress in thinnest incision were analyzed. According to the key point deflection, the rotation error angle expression was derived and its influence on capture probability was analyzed. Based on the research of flexible shaft characteristics, the flexible hinge was optimized by genetic algorithm. The results are as follows:the flexibility in working direction is 0.768 rad/Nm, the stress of thinnest incision is 1.768 e+8 Pa and the rotary error angle is 343 rad. Finally, the finite element method was utilized to verify the design consequences, the relative error of the three indexes was less than 3.5%, which proved that the design was reliable. This study can provide some reference for flexible shaft design in satellite optical communication terminal. |
| |
| Keywords: | |
|
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
