摘要
针对某型电动乘用车,建立考虑电机参振的11自由度电动汽车平顺性频域分析模型,分析车辆典型响应的传递函数和功率谱密度基本特征,计算不同行车速度和路面等级下各响应的均方根值;从降低电机振动和提高整车平顺性角度,分析不同悬置刚度和阻尼、电机总成质量对上述特性的影响。结果表明:建立的分析模型与传统模型相比,不仅可分析整车平顺性,还能用于研究电机振动状态及其对整车平顺性的影响;电机总成参数对整车平顺性的影响较小,但对电机自身振动影响明显,增大电机总成悬置刚度和阻尼、减小质量有助于降低电机振动,悬置刚度增大会略微降低整车平顺性。
Aiming at an electric passenger vehicle,a frequency domain vertical dynamics model of electric vehicle considering electric motor vibration with 11 DOF was built.The basic characteristics of transfer functions and power spectral densities of typical vehicle responses were analyzed.The root-meansquare values of vehicle responses under different running speeds and road classes were calculated.From the point of decreasing electric motor vibration and improving vehicle ride,the influence of different mount stif&iess,damping and motor mass on above characteristics was analyzed.The results show that the proposed model is able to analyze not only the vehicle ride,but also the motor vibration and its influence on the vehicle ride.The variation of the electric motor parameters has little impact to the vehicle ride,but has obviously effect on the motor vibration.With higher mount stifftiess and damping and lower motor mass,the motor vibration will be smaller,although increasing the mount stiffness will slightly decrease the vehicle ride.
作者
田国英
孙树磊
邓鹏毅
彭忆强
何灼馀
陆海英
TIAN Guoying;SUN Shulei;DENG Pengyi;PENG Yiqiang;HE Zhuoyu;LU Haiying(School of Automobile and Transportation,Xihua University,Chengdu 610039 China;CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062 China)
出处
《西华大学学报（自然科学版）》
CAS
2020年第1期60-68,84,共10页
Journal of Xihua University:Natural Science Edition
基金
成都市科学技术局产业集群协同创新项目(2017-XT00-00002-GX)
四川省科技计划项目(2018GZ0386,2018GZ0110,2017GZ0264)
国家重点研发计划项目(2018YFB1201603)
西华大学重点科研基金(Z1620304)
西华大学“青年学者”支持计划项目
汽车测控与安全四川省重点实验室研究基金(szjj2016-016)
四川省教育厅项目(14ZA0121,18ZA0452,18CZ0017)
关键词
电动汽车
平顺性
电机振动
悬置
路面谱
频域分析
electric vehicle
vehicle ride
motor vibration
mount
power spectral density of road unevenness
frequency domain analysis
作者简介
第一作者:田国英(1986-),男,讲师,博士,主要研究方向为汽车系统动力学及控制。OQCID:0000-0002-6967-4826,E-mail:gytian@mail.xhu.edu.cn。
