Principle and structure features of an on-off rotary valve type high frequency pulsating fluid signal generating device driven by D. C. motor are described.

• 介绍了一种由直流电机驱动的开关转阀式高频脉动流体信号发生装置的原理、结构特点,以及将它应用于非定常流量测量实验系统中的实验结果。