虚拟式声强分析系统在发动机噪声源识别中的应用

Application of virtual sound intensity analysis system in engine noise source identification

根据复声强测量的基本原理,基于LabVIEW的软件开发平台,自行开发了虚拟式声强分析系统。对系统软件进行了调试,并对该系统的测量精度和误差进行了校准。试验结果表明:该虚拟式声强分析系统具有精度高、性能稳定、成本低、操作简单等特点。该系统能对发动机表面辐射噪声源进行精确的定位和识别。

A virtual sound intensity analysis system was developed from the LabVIEW software development platform based on the fundamental principle of complex sound intensity measurement.Developed software of the analysis system was debugged and its measuring accuracy and margin of error were calibrated.Experiment results show that developed virtual system is characterized by high accuracy,stable performance,low cost,easy operation,and is comparable with equivalent system abroad.Location and identification of noise radiated from the surfaces of an engine were performed successfully by means of developed system.