基于虚拟仪器试验系统的电子机柜模态试验

Modal Experiment Analysis of Electronic Cabinet Based on Virtual Instrument Test System

根据电子机柜模态试验的特点,在LabVIEW平台上开发出一套集数据采集、分析和参数识别为一体的虚拟仪器测试系统(VITS)。通过与传统的测试仪器的测试结果比较表明,该测试系统能够实现对模态参数的计算和分析,计算结果准确,效率较高,满足电子机柜模态试验的要求。运用该虚拟仪器系统对电子机柜进行模态试验,获得其各阶固有频率。

Based on the characters of the electronic cabinet, the virtual instrument test system （VITS） including the functions of data acquiring, signal process and parameter analysis is developed to identify parameters of electronic cabinet structure. Experimental results from VITS are compared with that of the traditional instrument. The result shows that VITS can realize computing and modal parameter analyses, thus meeting the needs of modal experiment analysis （EMA） of the electronic cabinet. The EMA is tested by VITS and frequencies of the cabinet structure are obtained.