车用驱动电机声学舒适性的评价方法  

An Evaluation Method about the Acoustic Comfort of Vehicle-used Electromotor

作　　者：雷应锋 李传兵 杨明亮[3] 邢永虎[3] 柳文健[3] 吴昱东[3] 丁渭平[1,3] 

机构地区：[1]汽车噪声振动和安全技术国家重点实验室,重庆401120 [2]长安汽车工程研究院,重庆401120 [3]西南交通大学汽车工程研究所,成都610031

出　　处：《汽车科技》2012年第4期27-31,共5页Auto Sci-Tech

基　　金：汽车噪声振动和安全技术国家重点实验室开放基金课题(NVHSKL-201007)

摘　　要：以某型纯电动公交客车的驱动电机噪声为评价对象,进行双通道噪声信号采集用以便合成立体声来模拟人耳听觉,并按照3 dB的级差逐级衰减噪声信号的声压级以生成噪声样本序列用于人体主观感受的测试。进而通过高保真音频回放逐一考察各噪声样本作用下的人体舒适性/不舒适性主观感受,并以规定的"描述符"对其加以说明,同时采用评分方式进行量化。在此基础上,揭示出主观感受声学舒适性与不舒适性之间的相互关系,并划定出与舒适性感受相对应的噪声样本集合,以之为依据,进一步确立了驱动电机声学舒适性的评价方法。The driving electromotor noise of a pure electric bus was taken as the evaluation object in this paper to simulate human auditory by synthetic stereo with the acquired noise signal of dual channel, and the noise samples series for human subjective test were generated according to the 3dB differential progressive attenuation of noise sound pressure level. Then the paper investigated the human body comfort/discomfort subjective feelings under various noise samples through the high fidelity audio playback,and described them with the ＇descriptor＇ ,and it also quantified them with scores at the same time. On this basis, the paper revealed the correlation between subjective acoustic comfort and discomfort and found out the sample collections with comfort feeling. Based on these, an evaluation criterion of electromotor acoustic comfort was further established.

关 键 词：电机噪声 声学舒适性/不舒适性 主观感受 评价方法 

分 类 号：U467.4[机械工程—车辆工程]