基于优化速度检测算法的气固两相流参数检测系统  

Gas-solid Two Phase Flow Parameter Measurement System Based on Optimal Speed Measurement Algorithm

作　　者：刘大震 杨道业 LIU Da-zhen, YANG Dao-ye(School of Automation and Electrical Engineering,Nanjing University of Technology,Nanjing 211816,Chin)

机构地区：[1]南京工业大学电气工程与控制科学学院,江苏南京211816

出　　处：《仪表技术与传感器》2018年第5期104-107,共4页Instrument Technique and Sensor

基　　金：江苏省高校自然科学基金(15KJB530005)

摘　　要：为了实现气固两相流流动参数的准确检测,设计了一套双截面8电极ECT系统。采用交流激励的方法,完成28组电容值的检测及信号处理。在流速测量中,采用曲线拟合的方法避免了互相关算法下提取曲线最高值不准确的问题,有效提高了时延估计的精度。根据速度与浓度计算获取质量流量,并与重力传感器获取的质量流量结果进行比较,发现具有较好的一致性。A twin-plane 8 electrode ECT system was designed to accurately measure the flow parameters of gas-solid two phase flow.The method of AC excitation was used to complete the detection and signal processing of 28 groups of capacitance values.In the measurement of flow velocity,the method of curve fitting was used to avoid the problem under the cross-correlation algorithm that the maximum value of the curve was not accurate.The accuracy of delay estimation was improved effectively.The mass flow rate is calculated according to the velocity and concentration,and the results are compared with that obtained by gravity sensor.The results show good consistency.

关 键 词：气固两相流 双截面 曲线拟合 互相关算法 流速 质量流量 

分 类 号：TH7[机械工程—仪器科学与技术]