洛伦兹力分析和补偿 磁轴承 磁流密度统一性 错误 洛伦兹力磁轴承 磁流密度统一性 错误
Chunmiao Yu1, Yuanwen Cai1, Weijie Wang1
1The Department of Astronautics Science and Technology, Space Engineering University, Beijing 101416, China.
Sensors (Basel, Switzerland)
|May 11, 2024
概括
这项研究引入了一种高精度的方法,通过弥补洛伦茨力磁轴承中的磁流密度统一性错误来测量航天器的角速率. 这种补偿提高了磁悬浮控制和传感陀螺仪的准确性.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统 控制系统
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 磁悬浮控制和传感陀螺仪 (MSCSGs) 对于太空船的姿态确定至关重要.
- 在洛伦茨力磁轴承 (LFMB) 中的磁流密度统一性错误 (MFDUE) 降低了MSCSG的灵敏度准确性.
- 精确的航天器角率测量对于任务的成功和安全至关重要.
研究的目的:
- 为太空飞船的角度速率提出一个高精度的测量方法.
- 为了弥补LFMBs中的磁流密度统一性错误.
- 为了提高MSCSGs在测量航天器角度速率的准确性.
主要方法:
- 介绍了MSCSG结构及其对航天器角率的敏感性.
- 根据磁流密度统一性推导出影响MSCSG精度的MFDUE机制.
- 使用ANSYS分析了LFMB的3D磁流分布,确定了旋转器倾斜和磁流密度之间的关系.
- 开发了一个由于MFDUE的诱导电流计算模型,用于错误补偿.
主要成果:
- 拟议的方法实现了 96% 的预估准确度,用于诱导电流.
- 错误补偿方法提高了MSCSG在测量航天器角率的精度12.5%.
- 模拟和实验结果验证了拟议的补偿策略的有效性.
结论:
- 开发的MFDUE补偿方法显著提高了MSCSG的角度速率测量精度.
- 这种方法提供了一种可行的解决方案,可以改善航天器的态度控制和传感精度.
- 这些发现有助于推进用于太空应用的高精度陀螺传感技术.
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