Fault Diagnosis of Gear Pump Based on Sparse Representation

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Zhiyin, Han^1

Weifang Engineering Vocational College, Qingzhou

262500, China^1

关键词: Diagnosis algorithms;    Pump-based;    Reconstruction error;    Sparse representation;    Test samples;    Training signal;    Vibration signal;    Vibrations signal;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/3/032003/pdf
DOI  :  10.1088/1757-899X/563/3/032003

来源: IOP

【 摘 要 】

A fault diagnosis algorithm of gear pump based on sparse representation is proposed in this study. The vibration signals of the faulty gear pumps are different from those of the normal ones. Therefore, by comparing the vibration signal of an unknown gear pump with the training signals form the normal gear pumps, its fault can be analysed and identified. The sparse representation is used in this study and the vibration signal of the test sample is linearly represented based on the dictionary formed by the normal signals. When the reconstruction error is large enough, the present gear pump is judged to be faulty. Otherwise, it is a normal one. Experiments are conducted based on some measured vibrations signals from both faulty and normal gear pumps. The results show the effectiveness of the proposed method.