基于LabVIEW的瞬变频率测试方法研究

针对某型飞机地面试验时发现的问题，研究并设计了一种能处理交流信号波形不连续时的频率计算方法。使用Genesis数据记录仪采集数据，能在试验现场高速同步地对测试信号进行采集。借助LabVIEW强大的数字信号处理能力，对定义的3种信号断续情况进行频率计算和趋势图描绘。试验结果表明，频率趋势图符合被测信号变化规律，数据可靠，达到了设计要求。

Study of the Transient Frequency Test Method Based on LabVIEW

Aiming at a certain type of aircraft ground tests found problems, the method of calculating frequency in the condition of AC waveform discontinuous is studied and designed. Use Genesis data acquisition system collection to ensure acquisition signal synchronized and high-speed. Calculating and depicting the frequency trend graph for the definition of the three type signal discontinuous situation with the powerful digital signal processing capability in LabVIEW. The test results show that the trend graph accord with the measured signal＇s frequency variation, the test results are reliable, meet the need of design.