access icon openaccess Research on gear crack diagnosis of the planet gear transmission

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 10/10/2018, Accepted 09/01/2019, Published 25/03/2019

Objected to the planetary gear transmission, research on the fault diagnosis of gear cracks is mainly carried out with method of EEMD decomposition and Envelope demodulation. During the process, EEMD decomposition is used to the experiment data and continuously parameters of the root mean square (RMS) value, peak-to-peak (PtP) value, kurtosis (Kr), and other parameters of the IMF components are computed. According those parameters, the signal is reconstructed and after band-pass filtering the Hilbert transform and the envelope demodulation are carried out. The results showed that the power spectrum information obtained by using the EEMD decomposition and Hilbert transform could effectively response fault characteristics of the gear crack in the planetary transmission. The research is beneficial to the gear meshing fault diagnosis of the planetary transmission quickly and accurately and has a positive engineering value.

Inspec keywords: cracks; band-pass filters; fault diagnosis; Hilbert transforms; mean square error methods; gears; power transmission (mechanical)

Other keywords: IMF components; Hilbert transform; response fault characteristics; root mean square value; band-pass filtering; gear crack diagnosis; planetary transmission; kurtosis; EEMD decomposition; peak-to-peak value

Subjects: Fracture mechanics and hardness (mechanical engineering); Maintenance and reliability; Mechanical drives and transmissions; Numerical analysis; Mechanical components

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