Fault diagnosis for rolling bearing of swashplate based on DCAE-CNN
WAN Qiyang1, XIONG Bangshu1, LI Xinmin2, SUN Wei2
1.Provincial Key Laboratory of Image Processing and Pattern Recognition, Nanchang Hangkong University, Nanchang 330063, China;
2.Key Laboratory of Helicopter Rotor Dynamics, China Helicopter Research and Development Institute, Jingdezhen 333001, China
Abstract:In order to solve the problem of large noise interference and poor fault diagnosis of the helicopter swashplate rolling bearing, we proposed a fault diagnosis method based on deep convolutional autoencoder (DCAE) and convolutional neural network (CNN). Firstly, the wavelet transform method is used to construct the time-frequency diagram of the vibration signals in different states. Then, the image denoising is performed on the time-frequency map using DCAE. Finally, the time-frequency map after denoising is classified by CNN. Diagnostic experiments were carried out using the bearing fault data of the research team and Case Western Reserve University, and the proposed method is compared with the CNN and the stacked denoise autoencoder (SDAE). The results show that the proposed method has higher fault recognition rate in high noise environment.
万齐杨1,熊邦书1,李新民2,孙伟2. 基于DCAE-CNN的自动倾斜器滚动轴承故障诊断[J]. 振动与冲击, 2020, 39(11): 273-279.
WAN Qiyang1, XIONG Bangshu1, LI Xinmin2, SUN Wei2. Fault diagnosis for rolling bearing of swashplate based on DCAE-CNN. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(11): 273-279.
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