摘要
通过对建立的数学模型求解优化了涡轮流量传感器的结构参数,减小了传感器仪表系数的线性度误差。利用叶轮的四个结构参数建立了单相流条件下涡轮流量传感器的数学模型,以仪表系数的线性度误差为约束方程,采用多变量非线性规划算法对模型求解来获取优化后的结构参数值。以50 mm和25 mm口径的涡轮流量传感器为优化对象,在水流量装置上进行了实流实验。结果表明,优化后两种口径的涡轮流量传感器的线性度误差分别降低了38.48%和43.59%,表明了理论优化分析的有效性。
A mathematical model was deduced to optimize the meter coefficient linear error of turbine flowmeter under condition of single-phase flow.The model included four structural parameters of turbine flowmeter with a constraint equation of meter coefficient.The values of the structural parameters were solved by the planning method of multivariable and nonlinear.This two optimized turbines flowmeter of diameter 50mm and 25mm were tested on the standard water equipment.The result shows that the linear error is greatly improved which decreases 38.48% and 43.59% respectively,so the optimizing method is effective for turbine flowmeter.
出处
《化工自动化及仪表》
CAS
北大核心
2009年第5期70-73,78,共5页
Control and Instruments in Chemical Industry
关键词
涡轮流量传感器
结构参数
线性度误差
单相流
turbine flowmeter
structural parameter
linear error
single-phase flow
