在石英弹性加速度计内内部温度场的时空变化研究
Zhigang Zhang1,2,3, Fangxiang Tang1,2,3, Ziwei Zhao4
1School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China.
Micromachines
|March 6, 2025
概括
石英柔性加速度计 (QFA) 对温度变化敏感,导致错误. 这项研究模拟了内部QFA温度以提高准确性,在过渡阶段发现了显著的内部温度变化.
科学领域:
- 传感器技术 传感器技术
- 计量学 计量学 计量学
- 热力工程是热力工程中的一个.
背景情况:
- 石英柔性加速度计 (QFA) 容易受到温度诱导的漂移和稳定性错误的影响.
- 目前的错误校正方法依赖于外温度,限制了短暂传热过程中的准确性.
- 对于QFA的内部组件温度的有效传感和建模存在一个差距.
研究的目的:
- 为了研究QFA内部和外部之间的热交换动态.
- 为了阐明QFA外与其内部组件之间的温度差异.
- 支持QFA内部基于温度的错误校正方法的开发.
主要方法:
- 为QFA建立了一个导热模拟模型.
- 导出了内部温度场的时空分布模式.
- 与实验结果对模型进行了验证,达到0.4°C的平均RMSE.
主要成果:
- 在初始温度变化期间,QFA外温度变化比内部组件更快.
- 在热平衡之前,QFA内部存在显著的时空温度梯度.
- 关键的内部组件,如铁和伺服电路显示明显的温度变化.
结论:
- 在过渡阶段,QFA内部温度分布在时间和空间上不均.
- 准确的内部温度预测对于减轻QFA错误至关重要.
- 开发的热模型为增强的QFA温度错误校正提供了基础.
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