Journal of System Simulation ›› 2023, Vol. 35 ›› Issue (11): 2445-2453.doi: 10.16182/j.issn1004731x.joss.22-0616

• Papers • Previous Articles     Next Articles

Rolling Bearing Fault Diagnosis Based on Weighted Domain Adaptive Convolutional Neural Network

Zhang Wenfeng(), Zhu Zhichao, Wu Dinghui()   

  1. Engineering Research Center of Internet of Things Technology Appliations Ministry of Education, Jiangnan University, Wuxi 214122, China
  • Received:2022-06-06 Revised:2022-08-10 Online:2023-11-25 Published:2023-11-23
  • Contact: Wu Dinghui E-mail:6211924137@stu.jiangnan.edu.cn;wdh123@jiangnan.edu.cn

Abstract:

A rolling bearing fault diagnosis method based on a weighted domain adaptive convolutional neural network (WDACNN) is proposed to solve the problem that the data distribution of vibration signals of rolling bearings changes due to workload changes, which leads to poor generalization of fault diagnosis algorithm. In this method, the domain adaptation algorithm is embedded in the convolutional neural network to make the classifier based on the source domain achieve excellent generalization in the target domain, and the weight coefficient is introduced to weight the samples in the source domain to reduce the influence of the class weight deviation. In the simulation experiment, six migration tasks are used to verify the effectiveness of the proposed method. The average fault diagnosis accuracy of the proposed method reaches 96.6%, which proves the effectiveness of the proposed method under different workload conditions.

Key words: bearing, fault diagnosis, transfer learning, domain adaptation, weight coefficient

CLC Number: