TY JOUR TI Selection of Mother Wavelet Function for Vibration Diagnostics of Locomotive Engines KW Diesel engine KW vibration diagnostics KW wavelet transformation KW wavelet packet KW mean squared error KW spectral energy KW signal decomposition JO Proceedings of Petersburg Transport University AU Belyaev, A.A. AU Kononov, D.P. AU Kudrin, A.M. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"