Motor reducer gear noise control method and system, vehicle and storage medium

The invention discloses a motor reducer gear noise control method, which comprises the following steps: establishing and obtaining a flexible support gear system dynamics analysis model according to a reducer shell structure grid model and a gear system dynamics model in combination with a model optimization method; performing gear meshing analysis on the dynamic analysis model of the flexible support gear system, and determining initial design values of microscopic parameters of the flexible support gear system; microcosmic parameter tolerance analysis is conducted on the initial microcosmic parameter design values, and the microcosmic parameter range of the flexible supporting gear system is determined according to the microcosmic parameter tolerance analysis result; evaluating the microcosmic parameter range of the flexible support gear system, and determining the nominal design value and tolerance of the microcosmic parameters of the flexible support gear system according to the evaluation result; by perf