基于定置工况下的纯电动汽车子系统噪声振动控制方法  

Noise and Vibration Control Method of Pure Electric Vehicles Subsystem Based on Fixed Conditions

作　　者：段德虎 DUAN Dehu(Dayun Automobile Company Limited,Yuncheng 044000,China)

机构地区：[1]大运汽车股份有限公司,山西运城044000

出　　处：《汽车实用技术》2023年第8期32-38,共7页Automobile Applied Technology

摘　　要：为了调教定置工况下的纯电动汽车子系统工作时的噪声及振动,通过测试数据及主观评价矩阵,提出系统性控制车内子系统噪声和振动的方法。首先设定合理的鼓风机子系统目标值,标定出符合目标噪声的鼓风机子系统转速,然后通过控制变量的方法对电子风扇和压缩机扫频测试,确定随转速变化的振动、噪声曲线,锤击转向系统、压缩机本体模态分布,综合测试数据输出客观避频矩阵,其次依据客观避频矩阵结合声音的掩蔽效应,对子系统进行矩阵式主观评价得到矩阵结果,最后以车内温度差为联系变量,结合空调性能需求输出子系统转速控制表。此方法从系统控制的角度出发,综合性控制了子系统对车内噪声的影响,同时避免客观物理结构的影响,可适用于不同车型,具有较高的可复制性和参考性。In order to adjust the noise and vibration of the pure electric vehicle subsystem under fixed working conditions,a systematic control method for the noise and vibration of the subsystem in the vehicle is proposed through the test data and subjective evaluation matrix.Firstly,set a reasonable target value of the blower subsystem,and calibrate the speed of the blower subsystem that meets the target noise,and then the frequency sweep test of the electronic fan and compressor is carried out by the method of controlling variables to determine the vibration and noise curves that change with the hammer steering system and compressor body mode distribution,comprehensive test data output objective frequency avoidance matrix,and secondly,according to the objective frequency avoidance matrix combined with the masking effect of sound,the matrix subjective evaluation of the subsystem is carried out to obtain the matrix result,and finally the temperature difference in the car is taken as the connecting variable,and the speed control table of the subsystem is combined with the air conditioning performance requirements.From the perspective of system control,this method comprehensively controls the influence of subsystems on interior noise,while avoiding the influence of objective physical structure,which can be applied to different models and has high reproducibility and reference.

关 键 词：纯电动汽车 子系统噪声 频谱分析 主观评价矩阵 控制策略 振动控制方法 

分 类 号：U467.3[机械工程—车辆工程]