高精度超声波位移测量方法的研究

摘要

Based on the existing ways to improve the ultrasonic displacement measurement accuracy in this paper, a new method of improving precision of ultrasonic displacement measurement was proposed. The method changed the ultrasonic displace-ment measurement into frequency measurement, and phase-locked loop stable output frequency was used to further improve the accuracy of ultrasonic displacement measurement.%文中在现有的几种提高超声波测位移精度的方法的基础上,提出了一种新的提高超声波测位移精度的方法.高精度超声波位移测量方法把超声波位移的测量在转换为频率的测量,并使用锁相环稳定输出频率,使得超声波测位移的精度进一步提升.