摘要
对某量产车型在车速60km/h行驶工况下的车内噪声进行采样,分析了其时域波形和频谱图。基于Matlab平台,分别用巴特沃斯、切比雪夫Ⅰ型、切比雪夫Ⅱ型带阻滤波器对此噪声信号进行滤波处理,得到滤波前后的信号幅频响应。通过对比各种数字滤波器的去噪效果,为优化车内噪声提供了参考依据。
In this paper,the vehicle interior noise with speed60km/h running condition is sampled,and the time domainwaveform and frequency spectrum are analyzed.Based on the Matlab platform,the noise signal is filtered by Butterworth,ChebyshevI and Chebyshev II bandstop filters,and the amplitude frequency response of the filter is obtained before andafter filtering.By comparing the denoising effects of various digital filters,it provides a reference for the optimization ofvehicle interior noise.
作者
朱文英
张永栋
Zhu Wenying;Zhang Yongdong(Guangdong Communication Polytechnic, Guangdong Guangzhou 510650)
出处
《汽车实用技术》
2017年第20期147-149,共3页
Automobile Applied Technology
