基于声阵列技术的车辆通过噪声室内测量方法  

Indoor Pass-by Noise Measurement Method Based on Acoustic Array Technology

作　　者：刘策 陈剑[1,2] 李家柱[1,2,3] LIU Ce;CHEN Jian;LI Jia-zhu(School of Mechanical Engineering,Hefei University of Technology,Hefei,Anhui 230009,China;Automotive NVH Engineering and Technology Research Center Anhui Province,Hefei,Anhui 230009,China;Jiangxi Province Key Laboratory of Vehicle Noise and Vibration,Nanchang,Jiangxi 330013,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]安徽省汽车NVH工程技术研究中心,安徽合肥230009 [3]江西省汽车噪声与振动重点实验室,江西南昌330001

出　　处：《计量学报》2019年第6期1096-1100,共5页Acta Metrologica Sinica

基　　金：国家自然科学基金青年科学基金(11604070);安徽省科技重大专项(17030901049);江西省汽车噪声与振动重点实验室开放课题(JXNVHKB-KFKT-201803)

摘　　要：基于声阵列技术开展车辆通过噪声室内实验研究,建立声阵列信号合成算法,针对通过噪声室内外测试过程中车辆运行状态不一致问题,提出通过改变滑行实验速度范围,获取正确的底盘测功机加载参数,确保通过噪声室内测试时车辆运行状态与室外一致,最终实现通过噪声室内测试结果与通过噪声室外测试结果之间的误差控制在±1 dB以内。The study of indoor pass-by noise test based on acoustic array technology was carried out.The synthetic algorithm of acoustic array signal was established.In view of the problem that the vehicle s running state is different from the outdoors when the pass-by noise is tested indoors.A method for getting correct loading parameters of the chassis dynamometer by modifying the coast-by speed range was proposed to ensure the indoor vehicle running state agrees with the outdoors.Finally the absolute error between the indoor and outdoor pass-by noise test results was within±1 dB.

关 键 词：计量学 通过噪声 声阵列技术 室内测量 模拟加载 

分 类 号：TB95[一般工业技术—计量学]