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Driving solution study of a turbine flowmeter dynamic calibration system

机译：涡轮流量计动态校准系统的驱动解决方案研究

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Calibration of a turbine flowmeter (TFM) can be basically divided into static calibration and dynamic calibration. However, numerous factors hinder the development of TFM's dynamic calibration. This paper proposes a novel solution to dynamic calibration of the TFMs, in which a nozzle-flapper valve is adopted to generate rapid flow excitation. Unlike conventional one, in this solution, a piezoelectric stack driving unit takes the place of a torque motor driving unit. The above-mentioned two different driving schemes are mathematically modeled and simulated respectively using AMESim. Comparison of simulation results shows that piezoelectric stack type calibration system provides a faster and larger flow excitation and effectively controls high-frequency oscillation of the flapper. On this basis, this paper tried to optimize key parameters of the dynamic calibration system including orifice diameter, nozzle diameter and diameter and length of pipelines and so on.
机译：涡轮流量计（TFM）的校准基本上可以分为静态校准和动态校准。但是，许多因素阻碍了TFM动态校准的发展。本文提出了一种新颖的TFM动态标定解决方案，其中采用了喷嘴挡板阀来产生快速流动激励。与传统解决方案不同，在该解决方案中，压电堆驱动单元代替了扭矩电动机驱动单元。使用AMESim分别对上述两种不同的驱动方案进行数学建模和仿真。仿真结果的比较表明，压电叠层式标定系统提供了更快，更大的流量激励，并有效地控制了挡板的高频振荡。在此基础上，本文尝试对动态校准系统的关键参数进行优化，包括孔口直径，喷嘴直径，管道直径和长度等。

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