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Li, Y. (author), Cheng, G. (author), Pang, Y. (author), Kuai, Moshen (author)Poor working environment leads to frequent failures of planetary gear trains. However, complex structure and variable transmission make the vibration signal strongly non-linear and non-stationary, which brings big problems to fault diagnosis. A method of planetary gear fault diagnosis via feature image extraction based on multi central...journal article 2018