拖拉机驾驶室内噪声源识别测试与分析

Measurement and Analysis of Noise Source Identification of Tractor Cabs

为研究驾驶室内噪声问题,采用球型阵列进行拖拉机驾驶室内噪声源定位测试,分析结果表明驾驶室内声源位置主要在门锁机构附近和操纵机构附近,且在车门玻璃处出现较大的反射噪声。运用声强探头对声源泄漏位置进行特定的声强测试,以此来分析驾驶室内噪声源产生的具体原因,为下一步改善拖拉机驾驶室内的声学环境打下基础。

To study noise problems in tractor cabs, location of noise sources in a tractor cab is measured using spherical arrays. Test results show that the location of noise leak is near the door lock and the operation mechanism, and there is a large reflection noise at the door glass which drives reverberation into the cab. Then, sound intensity test is done to analyze the reason of noise source forming using sound intensity probes. These measurement and analysis results have applicable values for noise reduction of tractor cabs.