EMD-Based Methodology for the Identification of a High-Speed Train Running in a Gear Operating State.
EMD-Based Methodology for the Identification of a High-Speed Train Running in a Gear Operating State.
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DOI：
10.3390/s18030793
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发表时间：
2018-03-06
期刊：
影响因子：
--
通讯作者：
García-Prada JC
中科院分区：
文献类型：
--
作者：
Bustos A;Rubio H;Castejón C;García-Prada JC
高效的维护是铁路运输系统（尤其是高速列车）的一个关键考虑因素，以避免发生灾难性后果的事故。从这个意义上说，拥有一种能够及早检测关键元件（例如转向架机械部件）缺陷的方法对于提高机车车辆的可用性和降低维护成本至关重要。这项工作的主要贡献是提出了一种基于经典信号处理技术的方法，为快速识别关键机械系统的运行状态提供了一组参数。通过这种方法，通过可变输入来表征非常复杂的机械系统的振动行为，这将允许检测机械元件中可能的变化。该方法应用于商业服务中的真实高速列车，目的是研究维护操作前后列车（特别是转向架）的振动行为。通过该方法获得的结果证明了新程序的有用性，并允许披露维护操作后所选本征模函数 (IMF) 的光谱功率减少了 15% 至 45%。
An efficient maintenance is a key consideration in systems of railway transport, especially in high-speed trains, in order to avoid accidents with catastrophic consequences. In this sense, having a method that allows for the early detection of defects in critical elements, such as the bogie mechanical components, is a crucial for increasing the availability of rolling stock and reducing maintenance costs. The main contribution of this work is the proposal of a methodology that, based on classical signal processing techniques, provides a set of parameters for the fast identification of the operating state of a critical mechanical system. With this methodology, the vibratory behaviour of a very complex mechanical system is characterised, through variable inputs, which will allow for the detection of possible changes in the mechanical elements. This methodology is applied to a real high-speed train in commercial service, with the aim of studying the vibratory behaviour of the train (specifically, the bogie) before and after a maintenance operation. The results obtained with this methodology demonstrated the usefulness of the new procedure and allowed for the disclosure of reductions between 15% and 45% in the spectral power of selected Intrinsic Mode Functions (IMFs) after the maintenance operation.
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