埃迪电流的建模和模拟 消散 磁加速 空间噪声 惯性传感器
Pengxuan Li1, Zhiyin Sun2, Wei Gao3
1School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
这项研究模拟了空间惯性传感器中的磁加速噪声. 一个新的半分析模型准确地估计了对立方测试质量的旋流消散磁加速噪声,这对于LISA Pathfinder等任务至关重要.
科学领域:
- 太空物理和仪器仪表
- 电磁学和噪声分析
- 计算物理学的计算物理.
背景情况:
- 测试质量 (TMs) 中旋流消散的磁加速噪声 (MAN) 是空间惯性传感器的关键噪声源.
- 目前尚缺少用于立方TM的电流消散磁加速噪声 (ECDMAN) 的分析解决方案.
研究的目的:
- 开发ECDMAN在球形TM中的分析模型,作为立方TM的近似.
- 用LISA Pathfinder (LPF) TM作为案例研究建立ECDMAN在立方TM中的半分析模型.
- 为了实现实时和快速评估ECDMAN对于具有不同参数的TM.
主要方法:
- 基于电磁力学和波动分散定理的球形TM中ECDMAN的分析模型的推导.
- 分析方法与有限元法 (FEM) 的结合,以确定修改系数.
- 开发ECDMAN在立方TM中的半分析模型.
主要成果:
- 在球形TM中建立了ECDMAN的近似分析模型.
- 在立方TM中开发了ECDMAN的半分析模型,与LPFTM的近似模型相比,计算错误减少了4.64%.
- 为ECDMAN提出了一种通用的建模方法,可适应不同的TM参数.
结论:
- 开发的半分析模型比以前的近似方法更准确地估计了立方TM的ECDMAN.
- 这种通用化方法有助于在太空任务期间进行高效和快速的ECDMAN评估.
- 这项工作促进了对敏感空间惯性传感器中的噪声的理解和缓解.
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