改进的扩散映射与普氏分析相结合,用于捕捉工业过程监控中的局部-全局数据结构

IF 5.5 3区 工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-08-31 DOI:10.1016/j.jtice.2024.105747
Lingling Tong, Zhimin Lv
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引用次数: 0

摘要

背景过程监控通过对过程故障导致的异常运行状态发出预警,有助于维持正常生产并确保过程安全。在工业过程监控领域,捕捉数据的局部-全局结构特征并获取明确的映射关系进行降维投影,对于工业过程中的在线故障检测具有重要意义。首先,考虑到工业数据特征的多尺度性和相关性,将马哈拉诺比距离(Mahalanobis distance)用于改进扩散映射算法。利用这种方法可以同时捕捉局部和全局数据结构,从而更有效地提取数据代表性特征,提高故障检测的准确性。然后,利用 Procrustes 分析法获得高维数据与低维流形之间的明确映射矩阵,从而提高新样本关键特征提取的效率。重要发现通过在 TEP 数据集和实际工业数据上的实验,验证了该方法的有效性,表明 IDM-P 与其他方法相比,保持了更高的准确性,并实现了最佳故障检测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Improved diffusion mapping combined with procrustes analysis for capturing local-global data structures in industrial process monitoring

Background

Process monitoring, by providing early warnings of abnormal operating states resulting from process faults, facilitates the maintenance of normal production and ensures process safety. In the domain of industrial process monitoring, capturing the local-global structural features of data and acquiring an explicit mapping relationship for dimensionality reduction projection holds significant importance for online fault detection in industrial processes.

Methods

This study introduces an Improved Diffusion Mapping and Procrustes analysis (IDM-P) method for this purpose. Initially, considering the multiscale and correlation among industrial data features, the Mahalanobis distance is incorporated to improve the diffusion mapping algorithm. Utilizing this method allows for the concurrent capture of both local and global data structures, leading to a more efficient extraction of data-representative features, which enhances the accuracy of fault detection. Procrustes analysis is then used to obtain an explicit mapping matrix between high-dimensional data and low-dimensional manifolds, improving the efficiency of the key feature extraction of the new samples. Finally, this matrix is utilized to construct process monitoring statistics for fault detection.

Significant Findings

The method's effectiveness was validated through experiments on the TEP dataset and actual industrial data, demonstrating that IDM-P maintains higher accuracy and achieves optimal fault detection compared to other methods.

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来源期刊
CiteScore
9.10
自引率
14.00%
发文量
362
审稿时长
35 days
期刊介绍: Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.
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