一种局部损伤检测的二维振动表示方法

IF 1.3 Q3 Earth and Planetary Sciences

Mining Science Pub Date : 2014-01-01 DOI:10.5277/MS142109

Grzegorz Żak, Jakub Obuchowski, A. Wyłomańska, R. Zimroz

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引用次数: 24

摘要

本文提出了一种新的二维局部损伤检测方法。它是基于振动时间序列分析。通过短时傅里叶变换对原始振动信号进行分解，并对每个频域的新时间序列进行微分去相关。对每个时间序列计算自相关函数。在下一步中，将构造ACF映射。对于健康的轴承，ACF图上不应该有显示损坏的水平线。通过对真实数据的分析，对该方法进行了说明，其中包含损坏轴承和健康轴承的信号进行了比较。

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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NOVEL 2D REPRESENTATION OF VIBRATION FOR LOCAL DAMAGE DETECTION

In this paper a new 2D representation for local damage detection is presented. It is based on a vibration time series analysis. A raw vibration signal is decomposed via short-time Fourier transform and new time series for each frequency bin are differentiated to decorrelate them. For each time series, auto- correlation function is calculated. In the next step ACF maps are constructed. For healthy bearing ACF map should not have visible horizontal lines indicating damage. The method is illustrated by analysis of real data containing signals from damaged bearing and healthy for comparison.

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来源期刊

Mining Science MINING & MINERAL PROCESSING-

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

24 weeks

期刊介绍： Mining Scince. Scientific Papers of the Department Geoengineering, Mining and Geology of the Wroclaw University of Technology. The journal publishes original papers on mining and geology, geo-engineering and the related issues. The journal is devoted to the following topics: fundamental research in mining, underground and open-cast mining technologies, blasting technology, design and construction of mines, geomechanics and geotechnical engineering, mine ventilation, fluid mechanics and its application in mining, mining machinery and condition monitoring, mineral processing, environmental protection and waste utilization. The journal also accepts papers concerns geoengineering which is a sciences covering mining construction, geotechnical engineering, GIS, and earth sciences.