摘要
利用比利时Lms公司的Test_lab模态分析系统测量了某轿车车内空腔声学模态,采用Spectral Ac-quisition模块测量了声传递函数,用PolyMAX(最小二乘复频域法)分析方法进行了模态参数的识别。通过试验分析获得了该轿车车内空腔共鸣频率和三维模态形状。该方法为控制和降低轿车车内低频噪声提供了参考,为轿车车内空腔声学模态提供了简单易行的测试方法。
Some car＇s interior cavity acoustics modal was measured by using Belgian Lms company＇s Test lab modal analysis system,the acoustics transfer function also was measured by Spectral Acquisition modal,and the modal parameter was identified by PolyMAX analysis method.Through the test analysis,the car＇s interior cavity resonance frequency and 3D modal form were obtained.This method gives us a reference to control and reduce the car＇s interior low frequency noise,and a simple method to test car＇s interior cavity acoustics modal.
出处
《汽车技术》
北大核心
2007年第6期33-35,共3页
Automobile Technology
关键词
轿车
空腔
声学模态
试验
Car, Cavity,Acoustics modal,Test
