道路洗扫车车外噪声源测试与诊断研究

Test and Diagnosis of Noise Sources Outside of Road Sweeper

以某公司新研制的罐式洗扫车为研究对象,采用"分步运转法+近场测量法"对其进行声源测试,并通过"频谱分析+相干分析"进行噪声源识别,得出洗扫车在述常工况下的主要噪声源频率特性及其噪声能量的占比排序,为洗扫车的噪声控制提供科学依据。

Taking the newly developed tank cleaning truck of a company as the research object,the sound source test was performed using the"step-by-step operation method+near-field measurement method",and the noise source identification was performed through"spectrum analysis+coherence analysis".The frequency characteristics of the main noise sources and the proportion of the noise energy of the washing car under normal working conditions provide a scientific basis for the noise control of the cleaning truck.