基于特征选择和参数优化,用于磁流泄漏测试中的铁路缺陷的智能分类方法.
Kailun Ji1, Ping Wang1, Yinliang Jia1
1College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Sensors (Basel, Switzerland)
|July 12, 2025
概括
这项研究通过使用优化的神经网络提高了铁路磁流泄漏 (MFL) 检测精度. 改进的框架显著提高了对各种铁路缺陷的分类性能,确保了更安全的基础设施.
科学领域:
- 铁路工程 铁路工程是指铁路工程.
- 人工智能的人工智能
- 信号处理 信号处理
背景情况:
- 铁路完整性对于运输安全至关重要.
- 磁流泄漏 (MFL) 是铁轨的一种关键的非破坏性测试方法.
- 目前的MFL缺陷分类面临着准确性挑战,特别是有限的数据.
研究的目的:
- 为铁路MFL信号开发一个增强的智能分类框架.
- 提高铁路检查中缺陷检测的准确性和稳定性.
- 解决传统方法在处理小样本场景和复杂缺陷类型方面的局限性.
主要方法:
- 提出了使用粒子群优化辐射基函数神经网络 (PSO-RBF) 的增强分类框架.
- 实现了一个具有适应性学习因子和非线性惯性权重的动态PSO算法,用于RBF参数优化.
- 采用分层特征处理策略,将相互信息选择和基于关联的维度减少相结合.
- 整合了适应型模型架构的调整,以实现有效的小样本学习.
主要成果:
- 在人工缺陷上获得了87.5%的准确性,比传统的RBF绝对提高了17.5%.
- 获得的宏观F1得分为0.817,人工缺陷的马修斯相关系数 (MCC) 为0.733.
- 对于现实世界有限的样本,达到80%的准确性,提高了0.25的少数类 (分离) F1分数,并减少了50%的错误报警.
结论:
- 优化的PSO-RBF框架在提取和分类MFL信号模式方面表现出卓越的能力.
- 这项研究为工业铁路检查设定了新的基准,特别是在磨损,裂纹,痕和外缺陷之间进行区分.
- 提出的方法为基于MFL的铁路缺陷准确分类提供了可靠的解决方案,即使数据有限.
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