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首页> 外文会议>IEEE International Conference on Electronic Measurement and Instruments >Metal particles velocity measurement based on a novel structure of differential capacitance sensor
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Metal particles velocity measurement based on a novel structure of differential capacitance sensor

机译：基于新型差分电容传感器结构的金属颗粒速度测量

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摘要

A novel triangular-shaped electrodes differential capacitance sensor (TEDCS) is designed for measuring the average velocity of metal particles within the small-diameter pipeline in this study. Firstly the axial sensitivity distribution of the TEDCS is analyzed by finite element method. Then the spatial filtering effect of the TEDCS for velocity measurement is investigated. Results indicate that the velocity of the metal particles can be obtained by determining the equivalent peak frequency of the differential output signals of the TEDCS. Finally a TEDCS-based metal particles velocity measurement system is further developed and the experimental test results on a gravity-fed particle flow experimental apparatus are presented. Theoretical and experimental results demonstrate that the measurement method has a good repeatability, and the repeatability errors of the measured velocity are less than 8% over the velocity range of 2.44 $sim$ 5.34 m/s.
机译：设计了一种新颖的三角形电极差分电容传感器（TEDCS），用于测量小直径管道内金属颗粒的平均速度。首先通过有限元方法分析了TEDCS的轴向灵敏度分布。然后研究了TEDCS在空间测量中的空间滤波效果。结果表明，可以通过确定TEDCS的差分输出信号的等效峰值频率来获得金属粒子的速度。最后，进一步开发了基于TEDCS的金属粒子速度测量系统，并给出了重力式粒子流实验装置的实验测试结果。理论和实验结果表明，该测量方法具有良好的重复性，在2.44±5.34 m / s的速度范围内，测量速度的重复性误差小于8％。

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