基于超声波声速测定实验的谐波分析

摘要

采用实用谐波法分析了超声波声速测定实验的各种周期误差，将其分解成一个恒定分量和若干正弦谐波分量，并分析了产生误差的原因，因而为控制该实验的周期误差提供了有效的依据．%This paper studies various periodic errors of ultrasonic transmission velocity measurement experiments by applying practical harmonic method. Then it is decomposed into a constant component and several sinusoidal harmonic components. The cause for such errors is also analyzed. All these provide an effective basis for controlling periodic errors arising from the experiment.