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Rolling bearing fault feature learning using improved convolutional deep belief network with compressed sensing

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标题: Rolling bearing fault feature learning using improved convolutional deep belief network with compressed sensing
资源摘要: Publication date: 1 February 2018
Source:Mechanical Systems and Signal Processing, Volume 100

Author(s): Haidong Shao, Hongkai Jiang, Haizhou Zhang, Wenjing Duan, Tianchen Liang, Shuaipeng Wu

The vibration signals collected from rolling bearing are usually complex and non-stationary with heavy background noise. Therefore, it is a great challenge to efficiently learn the representative fault features of the collected vibration signals. In this paper, a novel method called improved convolutional deep belief network (CDBN) with compressed sensing (CS) is developed for feature learning and fault diagnosis of rolling bearing. Firstly, CS is adopted for reducing the vibration data amount to improve analysis efficiency. Secondly, a new CDBN model is constructed with Gaussian visible units to enhance the feature learning ability for the compressed data. Finally, exponential moving average (EMA) technique is employed to improve the generalization performance of the constructed deep model. The developed method is applied to analyze the experimental rolling bearing vibration signals. The results confirm that the developed method is more effective than the traditional methods.

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资源来源机构: Elsevier
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