摘要
叙述超声旋涡流量计利用旋涡调制连续超声波的原理，旋涡调制连续超声波有调频和调幅，这两种调制同时存在，时而相互加强，时而相互减弱，因而产生不稳定性。着重介绍产生不稳定性的原因以及解决方法。
The principle of ultrasonic vortex flowmeter is described. The continuous ultrasonic wave is modulated by vortex flow. The modulation includes both frequency modulation and amplitude modu-lation which are interacted. Thus the unstability is induced because of the increment and decrement on modulation from interaction.The causes of formation on unstability and the solutions are emphasized.
出处
《自动化仪表》
CAS
北大核心
2000年第11期13-14,共2页
Process Automation Instrumentation
关键词
超声流量计
旋涡流量计
不稳定性
Ultrasonic flowmeter Vortex flowmeter Unsta-bility Research
