Table 1.

Related works on deep learning-based methods for mechanical systems.

Reference	Deep learning technique	Mechanical system
[31]	CNN with wavelet transform	Motor bearing
[32]	Hierarchical CNN	Roller bearing
[33]	CNN
[27]	Deep belief network and sparse autoencoder
[34]	Recurrent neural network
[35]	Stacked autoencoder	Gear box
[36]	Generative adversarial network
[37]	CNN	Centrifugal pump
[38]	Deep learning	Cutting tool
[39]	PCA and decision tree
[40]	SVM
[41]	FFBP, FFBPNN, and ANNBFIS