汽车车内噪声与振动等级评估.pdf

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汽车车内噪声与振动等级
评估冰
刻想张偷俊张明飞
(天术师的人学汽车ラ学院。2那形合な裁小号院
摘要:噪声与振动会影响汽车的驾驶性能,并从某种程度上分散驾驶员的注意力。已经确定的汽车振动的主要原因是汽
车驱动时发动机的传递和轮胎与路面的接触。考虑了不同路面的因素,针对发动机转速的变化,使用布鲁尔&卡亚尔便
携式及多通道脉冲3560D型仪器、B&K脉冲 Lapshop软件和布鲁尔&卡亚尔声品质7698型软件进行噪声与振动刚量
并研究了驾驶室内特定零部件上噪声中声品质与暴露的振动变化之间存在的相关性。通过对噪声与振动的输入进行数
据分析,获得了声品质指标随暴露的振动变化趋势的显著性等级。从结果中发现暴露的振动影响噪声的产生。通过采用
聚类和分类算法,成功提出了一种评估经历噪声与暴露的振动的模型。
关键词:汽车;振动;噪声;聚类;分类
Evaluation of Vehicle Interior Noise and Vibration Level*
Abstract: Vehicle noise and vibration can affect driving performance, and to some extent distract his or her attention. Two
identified main sources that contribute to the generation of vibration are the transmission of the engine and the tire and road
contact while the car is being driven. We consider the factor of different road surfaces, conduct the measurements of noise
and vibration using Bruel Kjaer portable and multi-channel Pulse Type3560d, B&K Pulse Labshop software and Bruel
Kjaer Sound Quality Type 7698 software in view of the engine speed changes, and study the correlation that exists between
he sound quality from the noise and the changes of the exposed vibration at particular parts in the cabin. The trends of
significance levels of sound quality metrics over exposed vibration can be obtained by performing data analysis towards the
input of noise and vibration. The results show that the exposed vibration influences the generation of noise. At the end of the
study, a model of evaluation method on the experienced sound and exposed vibration is successfully proposed using the
clustering and classification algorithm
Key words: Vehicle; Vibration; Noise; Clustering; Classification
噪声与振动是汽车界最活跃的研发领域之一,在噪声与振动等级是可行的,并为今后车内噪声与振动
汽车研究与产品开发过程中的作用越来越突出。汽车分析和控制提供借鉴。
制造公司为了提高汽车车内舒适度,积极开展研究。研1研究方法
究人员认为在汽车车内,暴露的噪声与振动直接与发1.1振动评估
动机转速的增加或者减少一致,一般来说,与发动机测量振动等级最理想的方法是参考振动剂量值,
转速的传播成正比。在前人研究的基础上,本研究基故在本研究中,依据文献21并参考加权加速度评估振
于试验考虑了声品质指标和振动,通过聚类和分类算动等级。振动剂量值的计算公式为:
法建立评估模型,使用“遗传算法-神经网络”(CANN)
分类聚类的数据,应用线性判别分析(LDA)验证分类
UND= (a())di
结果。研究表明:采用聚类和分类算法评估汽车车内式中:いm振动剂量值,ms47
*基金项目:国家自然科学基金(青年)项目(51406135
47