摘要
针对汽车用发电机NVH性能测试要求,建立专用的声学实验室,该实验室由声学测试间和控制间组成,由声学隔墙隔开。参照GB/T 3767-1996《声学声压法测定噪声源声功率级反射面上方近似自由场的工程法》及相关企业测试要求进行设计,建成后通过中国测试技术研究院鉴定,各项指标达到设计要求。介绍该实验室的设计方法及鉴定结果。
Aiming at the requirement of NVH performance test of vehicle alternators, a special acoustics laboratory was built. This laboratory was divided into test room and control room by an acoustic wall. It was designed in the light of GB/T 3767-1996 ＂Acoustics-Determination of sound power levels of noise sources using sound pressure-Engineering method in an essentially free field over a reflecting plane＂ and the test requirements of relevant enterprises. After the completion of the laboratory, it passed the appraisal of National Institute of Measurement and Testing Technology, and its respective indicators met the design requirements.
出处
《噪声与振动控制》
CSCD
2012年第3期147-151,共5页
Noise and Vibration Control
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―车用电机噪声的产生机理及控制方法研究(NVHSKL-201007)
关键词
声学
声学实验室
汽车用发电机
环境修正量
背景噪声
acoustics
acoustic laboratory
vehicle alternator
environmental correction value
background noise
