School of Mechanical Engineering;
Dongguan University of Technology;
Dongguan 523808;
China;
School of Mechanical Engineering;
Xi’an Jiaotong University;
Xi’an 710049;
China;
Faculty of Computer Science and Engineering;
Ss.Cyril and Methodius University;
Skopje;
Macedonia;
Deep learning; Fault diagnostics; Novelty detection; Multi-head deep neural network; Sparse autoencoder;