计量学报2026，Vol.47Issue(3)：341-348,8.DOI:10.3969/j.issn.1000-1158.2026.03.04
基于关联系数寻优温差预测模型的快速pVTt法原位校准系统研究
Research on Fast pVTt In-situ Calibration System Based on Temperature Difference Prediction Model with Correlational Coefficient Optimization
摘要
Abstract
A fast pVTt in-situ calibration system was developed.A gas flow calculation model was established based on the ideal gas state equation.Subsequently,the calibration process was automated by implementing an embedded system for real-time data processing.To improve the accuracy of the model,temperature,the key parameter,was calibrated.For this purpose,a temperature difference prediction model between the average gas temperature and the outer wall temperature was constructed based on theoretical analysis.This model was subsequently optimized via a correlation coefficient optimization method to enhance its predictive accuracy and stability.Experimental results indicate that a single flow point can be calibrated within 10 seconds by the system.Meanwhile,after temperature correction,the calculation error of gas flow rate significantly decreased,with a relative error not exceeding±1%,meeting the practical application requirements.关键词
流量计量/气体流量/原位校准/动态pVTt/温度预测/迭代计算Key words
flow measurement/gas flow/in-situ calibration/dynamic pVTt/temperature prediction/iterative computation分类
通用工业技术引用本文复制引用
王若南,周彬,徐志鹏,张高明,张奕,向磊,赖祈亢..基于关联系数寻优温差预测模型的快速pVTt法原位校准系统研究[J].计量学报,2026,47(3):341-348,8.基金项目
浙江省尖兵科技计划(2025C01143) （2025C01143）
浙江省市场监督管理局科技计划(ZD2025005) （ZD2025005）
流体动力基础件与机电系统全国重点实验室开放基金(GZKF-202420) （GZKF-202420）
浙江省大学生科技创新活动计划(2025R409A003) （2025R409A003）
