稳态工况下自动变速操纵系统故障诊断技术研究  

A Research on the Fault Diagnosis Technique of Automatic Shift Control System in Steady State Conditions

作　　者：彭建鑫[1,2] 刘海鸥[1] 陈慧岩[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081 [2]中国北方车辆研究所车辆传动国家重点实验室,北京100072

出　　处：《汽车工程》2014年第1期114-118,共5页Automotive Engineering

基　　金：国家高技术研究发展计划项目(2011AAllA252)资助

摘　　要：基于主元分析方法实现了稳态工况下自动变速操纵系统(ASCS)故障检测和诊断。以自动变速操纵系统稳态工况下系统状态变量特性作为依据,利用无故障历史数据建立自动变速操纵系统主元模型,并根据数据呈多元正态分布的特点,采用综合监控指标O Index以替代一般的T2和Q统计量。当故障发生时利用因子分析理论,通过得分向量的贡献度序列与承载度序列的匹配实现了故障的隔离。最后,实车试验验证了方法的有效性和实时性。Fault detection and diagnosis of automatic shift control system （ASCS） is fulfilled by using principal component analysis technique.Based on the state variable characteristics of ASCS in steady state conditions,the principal component model for ASCS is established with faultless historical data.According to the feature of multivariate normal distribution of data,a comprehensive monitoring indicator OIndex is adopted instead of commonly used T2 and Q statistics.When fault occurs the theory of factor analysis is used to realize fault isolation by the matching between the sequences of contribution and carrying degree of score vectors.Finally real vehicle tests verify the effectiveness and realtimeness of the technique.

关 键 词：自动变速操纵系统 主元分析 故障诊断 机械式自动变速器 

分 类 号：U472[机械工程—车辆工程] U463.2[交通运输工程—载运工具运用工程]