摘要
根据摩托车道路实验的测量要求,经过理论推导建立运动点声源衰减、反射的声学模型,通过建立的各种声学模型并结合摩托车静止时测量的一些数据对摩托车的道路通过噪声进行理论仿真,从而很快地识别出通过噪声各频段的主要贡献量。另外多普勒效应对通过噪声测量结果有一定的影响,车速越快、频率越高,多普勒效应越明显。
According to the motorcycle road experimental measurement requirements, established the acoustic model of the moving point sound source about decay and reflecting, simulated the effect of Doppler at different speed and frequency. The faster the speed is, the higher the frequency is, and the more obvious the Doppler effect is. Imitated the actual measuring noise of one certain motorcycle, quickly identified the main contributors of different frequency band for acceleration noise in very short time.
出处
《小型内燃机与摩托车》
CAS
北大核心
2009年第6期70-75,共6页
Small Internal Combustion Engine and Motorcycle
关键词
通过噪声
多普勒效应
声学模型
噪声辐射
Pass-by noise, Doppler effect, Acoustic model, Noise radiate
