基于语音线圈电机的大型空间光学有效载荷的微振隔离和指向平台的综合设计和实验
Yilin Guo1, Jian Zhou1, Zehao Gao1
1State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
这项研究引入了一种轻量级的平台,以减少航天器微振动,提高光学有效载荷的指向精度. 实验结果显示了显著的振动减弱和改进的追踪能力.
科学领域:
- 太空飞船工程 太空飞船工程
- 光学有效载荷稳定器
- 控制系统的振动控制系统.
背景情况:
- 航天器微振动会降低敏感光学有效载荷的指点精度和图像清晰度.
- 轻量结构对于太空任务至关重要,以尽量减少发射成本并最大限度地提高有效载荷能力.
- 现有的解决方案可能无法同时充分解决振动隔离和精确指向要求.
研究的目的:
- 为大型太空光学有效载荷设计和验证一个集成的微振隔离和指向平台.
- 为了减轻航天器产生的微振动对有效载荷指向精度和成像的影响.
- 为了满足太空应用的严格轻量级要求.
主要方法:
- 开发了一种简化的动态模型,并使用比例-积分-导数 (PID) 控制策略推导控制方程.
- 设计和制造一个二维微振隔离和指点平台原型,包括膜,执行器和腿部部件.
- 实施使用弹性绳子进行重力卸载模拟的地面试验验证系统.
主要成果:
- 展示了集成平台的有效的振动隔离和指向能力.
- 在微振动的基本频率达到23dB的衰减效果.
- PID控制算法显示了增强的低频隔离和定向目标信号跟踪.
结论:
- 集成平台有效地隔离微振动,并保持空间光学有效载荷的指向精度.
- PID控制策略提高了性能,特别是在低频率和目标跟踪.
- 开发的平台提供了一种可行的解决方案,用于提高基于太空的光学系统的稳定性和清晰度.
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