汽车选换挡性能测试及评价方法研究  

Study on Testing and Evaluation Methods of Vehicle Gear Shifting Performance

作　　者：汤春球[1] 刘天福 蒋亚华 刘凤来 余自良 TANG Chun-qiu;LIU Tian-fu;JIANG Ya-hua;LIU Feng-lai;YU Zi-liang(School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan Hubei 430070,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《公路交通科技》2022年第2期167-173,共7页Journal of Highway and Transportation Research and Development

摘　　要：在手动挡汽车选换挡品质评价中,主观评价方法具有模糊性,以动态参数为指标的客观评价方法具有复杂性的特点。为解决简便准确地进行汽车选换挡品质评价的问题,首先,通过搭建挡位数据采集平台采集了车辆挡位自由间隙数据。然后,利用LabVIEW数据处理平台对采集的数据进行了实时显示与存储。利用DBSCAN算法删除离群点,利用K-means聚类算法对挡位数据进行了分类。然后,以汽车挡位数据为对象,从选挡行程、换挡行程以及挡位自由间隙3个维度提取了评价意义组,并为各评价意义组赋予作用因子来建立手动挡汽车选换挡品质评价模型。利用熵权法从客观数据中获得汽车选换挡品质评价模型中各参数指标的权重,建立了手动挡汽车选换挡品质综合评价方法。结果表明:针对3种不同车型,采用本评价方法,可对汽车选换挡性能进行测试,所得测试结果与主观测试结果相一致,验证了所选取的客观评价指标对选换挡品质评价的有效性,提高了分析的可靠性。该评价方法可以简单方便地对汽车选换挡质量进行综合评价,为汽车选换挡品质评价提供了参考。In the evaluation of gear shifting quality of manual gear shifting vehicles,and the objective evaluation method with dynamic parameters as indicators is complex.In order to solve the problem of evaluating the quality of automobile gear shifting simply and accurately,first,the data of vehicle gear free clearance are collected by setting up gear data acquisition platform.Then,the collected data are displayed and stored in real time by LabVIEW data processing platform.The outliers are deleted by DBSCAN algorithm,and the gear data are classified by K-means clustering algorithm.Afterwards,taking the automobile gear data as the object,the evaluation significance groups are extracted from the dimensions of gear selection travel,gear shifting travel and gear free clearance,and the function factor is given to each evaluation significance group to establish the evaluation model of manual vehicle gear shifting quality.The parameter weights in the automobile gear shifting quality evaluation model are obtained from objective data by using entropy weight method,and a method for comprehensive evaluating shifting quality of manual gear shifting vehicles is established.The result shows that the shifting performance can be tested by using the proposed evaluation method for 3 vehicle types,and the test result is consistent with the result of subjective test,which verified the effectiveness of the selected objective evaluation indicators for the evaluation of gear shifting quality.The evaluation method can evaluate the quality of automobile gear shifting simply and conveniently,and improved the analysis reliability,which provides a reference for the evaluation of automobile gear selection quality.

关 键 词：汽车工程 评价方法 聚类 选换挡品质 挡位数据 

分 类 号：U461.6[机械工程—车辆工程]