基于容错理论无级变速器故障诊断分类

发布时间：2018-01-14 04:25

本文关键词：基于容错理论无级变速器故障诊断分类　出处：《浙江大学学报(工学版)》2016年10期 　论文类型：期刊论文

【摘要】：为了实现无级变速器(CVT)在线故障诊断及分类需求,基于改进人工蜂群算法结合最小二乘向量机,提取无级变速器故障特征向量,建立夹紧力与速比故障预测模型,按照预测模型进行故障定位、分类辨识.针对从动油缸压力、速比、执行机构等故障的特征向量进行Matlab仿真,分析经容错控制分类后的故障特征向量仿真曲线变化趋势.通过容错控制在Matlab/Simulink中建立无级变速器硬件在环仿真动态模型.结果说明,采用该方法,无级变速器故障诊断经容错可继续工作概率达98.728%,满足无级变速器在线故障诊断可靠性及稳定性的需求.
[Abstract]:In order to realize the on-line fault diagnosis and classification requirement of CVT, the fault feature vector of CVT is extracted based on improved artificial bee colony algorithm and least square vector machine. The fault prediction model of clamping force and speed ratio is established, according to the prediction model, fault location, classification and identification are carried out. The Matlab simulation is carried out for the characteristic vectors of the follower cylinder pressure, speed ratio, actuator and so on. The trend of fault characteristic vector simulation curve after fault tolerant control classification is analyzed. The dynamic simulation model of stepless transmission hardware in loop is established by fault tolerant control in Matlab/Simulink. The results show that. Ming. By using this method, the fault diagnosis probability of CVT can reach 98.728 by fault tolerance, which can meet the need of reliability and stability of on-line fault diagnosis of CVT.
【作者单位】：长春工业大学机电工程学院;吉林大学汽车工程学院;湖南大学汽车工程学院;
【基金】：国家自然科学基金资助项目(50775094)
【分类号】：U472
【正文快照】： 容错分类是一种具有冗余能力的控制思想,其控制宗旨在于解决系统的故障诊断及容错两个关键问题,因此,容错理论研究对提高系统可靠性、安全性、有效性起着至关重要的作用.近年来,容错控制已应用到众多领域,特别是在汽车领域的“汽车ESP滑移率约束”、“汽车线性转向”、“汽车

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