低速电动乘用车声品质主观评价及改进  

Sound Quality Subjective Evaluation and Improvement of Electric Passenger Vehicle with Low Speed

作　　者：赵海军[1] 梁凯[2] 周辉[1] 宋伟志[1] 王海霞[1] ZHAO Haijun;LIANG Kai;ZHOU Hui;SONG Weizhi;WANG Haixia(Department of Mechanical Engineering, Luoyang Institute of Science and Technology, Luoyang 471023;Modern Education Technology Center, Luoyang Institute of Science and Technology, Luoyang 471023)

机构地区：[1]洛阳理工学院机械工程学院,洛阳471023 [2]洛阳理工学院信息技术中心,洛阳471023

出　　处：《现代制造技术与装备》2017年第2期12-13,16,共3页Modern Manufacturing Technology and Equipment

基　　金：河南省科技攻关项目(132102210435);中国建筑材料行业科技创新计划项目(2013-M1-8)

摘　　要：对低速电动乘用车样车进行声品质主观评价,并和对标车进行对比,对车门进行有限元模态分析,对三维有限元模型施加C级路面后进行动态响应分析,改进车门,进行模态频率对比,对改进后样车进行声品质主观评价。结果表明,改进后模态频率提高了54.2%,最少也提高了13.8%,振型变化不大,改进后样车的声品质主观评价和对标车基本一样,都达到了舒适程度,为低速电动汽车声品质性能提高提供了重要方法。Subject evaluation of sound quality is performed for prototype vehicle of electric passenger vehicle with low speed,and it is compared with a benchmark car. Its doors are done to mode FEM, dynamic response analysis is performed after imposing C grade simulating road displacement on the three dimension FEM model , and the doors are improved, and mode frequency comparison and subject evaluation of sound quality are performed. Results shows that maximum mode frequency after structure improvement of doors increase by 54.2%, and minimum mode frequency also increase by 13.8%, and mode of vibration does not change. Therefore an important method is provided for improving performance of sound quality on electric vehicle with low speed.

关 键 词：主观评价 声品质 低速电动车 结构改进 

分 类 号：U469.72[机械工程—车辆工程]