Construction Method for Reliability Test Driving Cycle of Electric Vehicle Drive System Based on Users' Big Data

被引：0
|
作者：
Zhao L. [1 ,2 ,3 ]
Wang Z. [1 ]
Feng J. [1 ,2 ,3 ]
Zheng S. [1 ,2 ,3 ]
Ning X. [4 ]
机构：
[1] School of Mechanical Engineering, University of Shanghai for Science & Technology, Shanghai
[2] CMIF Key Laboratory for Strength and Reliability Evaluation of Automotive Structures, Shanghai
[3] Public Technology Platform for Reliability Evaluation of New Energy Vehicles in Shanghai, Shanghai
[4] School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, Xinxiang
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 14期
关键词：
Construction of conditions; Electric vehicle drive system; Markov process; Reliability test; Users' big data;
D O I：
10.3901/JME.2021.14.129
中图分类号：
学科分类号：
摘要：
To construct the reliability test driving cycle of the electric vehicle drive system correlated with users' load, based on 300 actual users load data with 3.54 million kilometers, fragment of conditions are extracted and characteristic parameters are constructed with the failure dominant load of the electric drive system. Using principal component analysis and K-Means clustering analysis methods, the operating segments of the electric drive system under user conditions are divided into five typical conditions. Based on the damage accumulation model, the damage caused to the components of the electric drive system under different conditions are analyzed, and the optimal unit damage intensity distribution models are determined for each condition. Based on the continuity turning point of the damage distribution, the segments with higher unit damage strength are selected as reliability test driving cycle. Based on Markov state transition probability matrix, using Markov chain Monte Carlo method to generate pseudo-random numbers for stitching of conditions, then the reliability test load spectrum of the electric vehicle drive system is constructed. The comparison of the constructed reliability test load spectrum with the standard cyclic conditions and customers damage shows that the reliability test loading spectrum of the electric drive system is constructed with higher damage strength, which can effectively cover more than 90 % of the strength under user conditions, so as to provide reference and basis for the reliability design and verification of electric vehicle drive or transmission system. © 2021 Journal of Mechanical Engineering.
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页码：129 / 140
页数：11
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