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设计和实施一个低功率位置监控和控制系统,用于轨道上聚焦
Leijie Jiang1,2, Keyu Guo1,2, Xin Liu3
1School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou, China.
PloS one
|August 8, 2025
概括
一个新的低功耗系统允许光学遥感卫星调整相机的焦距以获得更清晰的图像. 该系统使用步进电机和线性编码器进行精确的聚焦,这对于能源有限的太空任务至关重要.
科学领域:
- 航空航天工程 航空航天工程
- 光学遥感器 遥感器 遥感器
- 嵌入式系统 嵌入式系统
背景情况:
- 光学遥感卫星需要精确的焦距调整来进行高分辨率成像.
- 太空任务面临严格的电力限制,需要低功耗的电子系统.
- 现有系统可能缺乏先进的太空光学仪器所需的精度或效率.
研究的目的:
- 为光学遥感卫星设计和实施低功耗位置监控和控制系统.
- 为了实现灵活而精确的焦距调整,以提高成像能力.
- 解决太空应用中固有的能源限制.
主要方法:
- 开发一种用于步进电机控制的新型恒压驱动电路.
- 实现差分线性驱动和接收电路用于线性编码器数据采集.
- 集成线性编码器,实时提供焦距反.
- 在现场可编程网关阵列 (FPGA) 电路板上对系统实施和性能评估.
主要成果:
- 开发的系统显示了低功耗 (大约[公式:见文本]).
- 该系统表现出强大的承载能力.
- 精确的聚焦控制在整个动作范围 (从[公式:见文本]到[公式:见文本]) 中以[公式:见文本]的准确度实现.
- 开环和闭环对焦功能都成功实现了.
结论:
- 设计的低功耗系统有效地允许对光学遥感卫星进行精确的焦距调整.
- 该系统的性能,包括低功耗和高精度,适用于能源有限的航空航天应用.
- 成功实施FPGA验证了系统在太空部署中的可行性.
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