摘 要：车用驱动电机液压冷却系统存在故障机理不确定等问题。本文应用模糊数描述其故障概率和故障程度，建立驱动电机冷却系统的T-S模糊故障树模型，计算系统模糊可能性，分析各部件的概率重要度和关键重要度，找出影响系统可靠性的关键部件。
关键词：电动汽车；驱动电机；冷却系统；T-S模糊故障树；可靠性分析
中图分类号：U462 文献标志码：A 文章编号：1006-3331(2024)02-0019-07
Reliability Analysis of Hydraulic Cooling System forDrive Motor Based on T-S Fuzzy Fault Tree
LIU Chiwei,GUO Meihua
Abstract: The hydraulic cooling system of the drive motor for vehicles has problems of uncertain fault mech-anisms.This paper uses fuzy numbers to describe the probability and degree of faults,establishes the T-Sfuzzy fault tree model of the drive motor cooling system,calculates the fuzzy possibility of the system,analy-zes the probability and critical importance of each component,and identifies the key components that affectthe reliability of the system.
Key words: electric vehicle; drive motor; cooling system; T-S fuzzy fault tree; reliability analysis
