【摘要】 为了提高微型车车外声强测试的精度,本文在声强测试原理的基础上,通过试验的方法,分析了发动机转速、测点布置、测偏角度、测量距离、背景噪声等主要因素对微型车车外声强测试的影响,提出了微型车车外声强测试中精度控制的方法。该项研究结果对后续的微型车噪声源定位、声源排序打下了基础,其精度控制法可以推到其它小型车辆的车外降噪工作中。更多还原

【Abstract】 In order to improve the exterior sound intensity(SI) test precision for minibus,and based on the SI test principle,the main influencing factors of SI test are analyzed which are engine revs,tested point disposal,deflection angle,test distance and environment noise.The methods of the SI test precision control of minibus are put forward.The results provide a base for the noise sources’ location and order for the development of the minibuses.The methods of the precision control can be used to research on reducing exterior noise for other vehicles.更多还原