Method for generating durable load spectrum of reduction gearbox of pure electric vehicle and electronic equipment

Abstract

The invention discloses a blade electric vehicle reduction gearbox endurance load spectrum generation method and electronic equipment, and relates to the technical field of vehicle engineering.The method comprises the steps that a whole vehicle file, a motor file, a reduction gearbox file, a driver file, a road file and a working condition file which are corresponding are read through MATLAB scripts, and a whole vehicle dynamics simulation model is built; performing vehicle simulation on each working condition to obtain simulation data under different working conditions; performing rain flow cycle counting processing on the motor torque time history data under each working condition to obtain torque alternating data under the corresponding working condition, generating a rain flow matrix of a motor torque time domain signal, and further obtaining an input end rain flow load spectrum and an output end rain flow load spectrum; and finally, based on the cycle index of the corresponding working condition, obtaining a full-cycle rain-flow load spectrum for predicting the damage and the service life of the reduction gearbox differential mechanism. According to the invention, the service life of the reduction gearbox differential can be predicted, a complex modeling analysis link is avoided, and the development efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of vehicle engineering, in particular to a method for generating a durable load spectrum of a gearbox for a pure electric vehicle and electronic equipment. Background technique [0002] At present, in the early development stage of the gearbox, whether it is part design verification or bench test verification, a reasonable and reliable load spectrum is required as input. Gearbox design verification usually relies on finite element and analytical methods to apply the load spectrum to shafts, gears, bearings, differentials, and housings to calculate their fatigue life and safety factors. The bench test of the gearbox assembly refers to the process of using the test bench to test the durability and strength of the various subsystems and parts of the gearbox. The bench test is mainly used to simulate the daily driving and road test of the real vehicle in the full life cycle. condition. The electric d...

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Problems solved by technology

[0005] In view of one of the defects in the prior art, the purpose of this application is to provide a method for generating a durable load spectrum of a pure electric vehicle gearbox and electronic equipment to solve the problem of fatigue damage caused by the load spectrum generated in the related art and the actual load. big problem

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