2-D激光多普勒振动测试仪的研究

2-D LASER DOPPLER VIBROMETER

本文阐述了一种 2 -D多普勒振动测试仪的基本测试原理和方法 ,分析了影响测量精度的要素 ,并就信号处理电路进行了设计 .该仪器能同时非接触地测量振动体两个方向振动的频率和幅度 ,测量范围大、精度高 .

In this paper,the fundamentals and method of 2 D Laser Doppler Vibrometer are introduced.The factors influencing the measuring accuracy are analyzed.Moreover,the circuit in singal processing is designed.The vibrating amplitude and frequency of 2 D vibration in wider range can be measured simultaneously in non contact means,the measuring results are accurate.