一种适用于极端环境的短暂温度测量方法,基于MF-LIBS和机器学习的结合
Bo Tang1, Zefeng Yang1, Zhe Li1
1School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
Talanta
|March 19, 2025
概括
这项研究引入了磁性受限激光诱导分解光谱 (MF-LIBS) 与鱼优化回传播神经网络 (WOA-BP) 相结合,用于在极端环境中精确的温度测量. 磁场增强了光谱信号,提高了快速热波动分析的准确性.
科学领域:
- 频谱学是一种光谱学.
- 等离子体物理学的物理学
- 机器学习 机器学习
背景情况:
- 传统的温度测量方法在快速变化的极端环境中扎.
- 激光诱导分解光谱 (LIBS) 是一种有价值的工具,但其性能可能受到等离子体扩散的限制.
- 准确的实时温度监测对于理解和控制极端条件至关重要.
研究的目的:
- 开发一种用于极端环境的先进温度测量技术.
- 研究磁场限制对激光诱导等离子体及其光谱特性的影响.
- 通过机器学习提高温度预测模型的准确性和可靠性.
主要方法:
- 集成磁性封闭激光诱导分解光谱 (MF-LIBS) 与鱼优化回传播神经网络 (WOA-BP).
- 在外部磁场限制下分析激光诱导的等离子体发射光谱.
- 主要组件分析 (PCA) 的应用用于光谱数据的简化.
- 使用WOA-BP的温度预测模型的开发和验证.
主要成果:
- 外部磁场显著增强光谱信号强度和信号噪声比 (SNR).
- 磁场的限制使Fe II 578.39nm线的强度增加了1.67倍,SNR在300°C时增加了25.41%.
- 与WOA-BP模型相结合的MF-LIBS实现了0.9982的确定系数 (R2),与非受限条件相比,RMSE降低了29.31%.
- 磁场限制通过洛伦茨力抑制了等离子体扩散,改善了等离子体的特性.
结论:
- 磁场封闭和机器学习的结合为短暂温度测量提供了强大的方法.
- MF-LIBS显著提高了光谱信号质量,从而可以更准确地预测温度.
- 这种先进的技术显示出在快速变化的极端环境中应用的巨大潜力,需要精确的热监测.
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