用于可重构天线的高精密作动器研究  

Research on high precision actuator for reconfigurable antenna

作　　者：江水东 侯仰青 柏宏武 曹子龙 JIANG Shuidong;HOU Yangqing;BAI Hongwu;CAO Zilong(Shanghai Branch,Aerospace Yuesheng(Hangzhou)Information Technology Co.,Ltd.,Shanghai 200240,China;College of Engineering,Zhejiang University,Hangzhou 310000,China)

机构地区：[1]航天跃盛(杭州)信息技术有限公司上海分公司,上海200240 [2]浙江大学工程师学院,杭州310000

出　　处：《空间电子技术》2021年第6期106-112,共7页Space Electronic Technology

摘　　要：随着反射阵天线技术的不断发展,集成了高精密运动执行器的反射阵天线能够实现波束扫描,成为了一种新型天线的研究热点。为了便于集成及可工程化,要求执行器具有较小的体积、低功耗、快速响应、可靠性高,以及简单可控等。研究的执行器主要由压电双晶片和高精度微型齿轮组成。通过对一组双晶片交替电压载荷,执行器可以实现往复旋转。研究过程中,使用多物理场耦合有限单元法优化了执行器的结构及几何参数。通过精密机械加工技术实现执行器各组成部件的制备。双晶片由压电陶瓷和玻璃纤维材料制备而成。金属材料用于制备执行器的外壳和执行器中的微齿轮,并对制备的零部件进行装配,测试得出执行器的相关性能与设计结果对比基本一致。With the advancing of reflect array antenna technology,integrated with precise actuator,the antenna attractes more and more researchers'attention.For ease of intergration and engineering,the anticipated characteristics of this actuator include small volume,low energy consumption,easy to control,fast response,high reliability and etc.The actuator developed by this study is composed of bimorphs and micro-gears.It can rotate clockwise and counterclockwise alternately by varying the applied voltage.This study has optimized the geometry of this actuator using the multi-physics coupling finite element method(FEM).The components of this actuator have been fabricated by precise machining technology.Glass fiber reinforced composited(GFRC)and Lead Zirconium Titanate(PZT)materials are used to fabricate the bimorph.The copper and stainless steel are used to fabricate the housing and gear,respectively.The fabricated actuator was tested,and the experimental results are very close agreement with the analysis results.

关 键 词：反射阵 执行器 双晶片 精密加工 制备与测试 

分 类 号：V747[航空宇航科学技术]