TY JOUR TI Mathematical Model of Locomotive Wheel-Motor Block for the Conditions of Diagnostics Technological Process for Bearing Units at the Position of Vibroacoustic Control KW Electric rolling stock KW power source KW traction electric motor KW wheel-motor block KW vibroacoustic diagnostics KW inertia moment JO Proceedings of Petersburg Transport University AU Shadmonhodzhaev, M.S. AU Zelenchenko, A.P. AU Rolle, I.A. PY 2022 IS 19 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"