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对于微纽顿冷气推进器的高分辨率和宽范围门
Hao-Yuan Zhang1, Jian-Ping Liu1, Shao-Gang Hu1
1MOE Key Laboratory of TianQin Mission, TianQin Research Center for Gravitational Physics School of Physics and Astronomy, Frontiers Science Center for TianQin, Gravitational Wave Research Center of CNSA, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, China.
The Review of scientific instruments
|February 12, 2024
概括
这项研究介绍了一种用于科学卫星的新型比例,利用双重压电驱动器进行精确的微纽顿推力控制. 该设计提高了可靠性,并实现了高分辨率的广泛操作范围.
科学领域:
- 航空航天工程 航空航天工程
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 科学卫星需要精确的推力控制来保持站点和干扰补偿.
- 传统的大质量流量控制面临着分辨率和操作范围的限制.
- 环境干扰需要可靠的微纽顿级推进器性能.
研究的目的:
- 引入微纽顿推进器的新型比例,以提高分辨率和范围.
- 通过创新的设计来解决门芯中冲击损失的问题.
- 为了提高空间应用的推力控制系统的可靠性和冗余性.
主要方法:
- 开发了一种带有两个可独立控制的压电堆的比例.
- 分析门密封机制,以尽量减少中风损失.
- 使用U形连接器集成压电驱动器,以实现紧的设计.
主要成果:
- 实现了0-675μg/s的质量流控制范围.
- 显示了比0.1μg/s更好的分辨率.
- 暴露的流量噪声低于0.1μg/s/Hz1/2 在0.1mHz-1Hz.
- 证实运行能力,即使有一个损坏的压堆,确保冗余.
结论:
- 这种新型的双压电堆比例符合科学卫星推进器的严格要求.
- 该设计提供了卓越的质流控制分辨率,扩大了操作范围,并提高了可靠性.
- 这一创新有助于更强大和精确的态度和轨道控制系统,用于太空任务.
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