大气与环境光学学报2025，Vol.20Issue(5)：676-686,11.DOI:10.3969/j.issn.1673-6141.2025.05.010
一种高精度气体压力控制算法设计与实现
Design and implementation of high precision gas pressure control algorithm
摘要
Abstract
Non-methane total hydrocarbon(NMHC)has long been a class of the most harmful air pollutants,which are often monitored using NMHC analyzer.The working principle of NMHC analyzer determines its high requirements for response speed and control precision to the gas flow.In order to meet the requirements of NMHC analyzer and the instantaneous characteristics of actual gas flow,a high precision gas pressure control algorithm is proposed in this work taking the position PID algorithm as a base and the fuzzy control algorithm as an auxiliary adjustment means.The algorithm can achieve high precision control of gas flow by adjusting the gas pressure,and different experiments are designed to verify the performance of the algorithm.Experimental results show that compared with traditional PID algorithms,the proposed fuzzy control PID algorithm has faster response speed,smaller overshoot and higher regulation precision.It can calculate the opening and closing size of proportional valve according to the error between the set value and the actual value of pressure control,thus achieving the design goal of efficient control of gas flow and realizing the accurate measurement of NMHC concentration in air pollution areas.By using this control algorithm,the error of each gas control pressure can be controlled within±0.1 kpa.The proposed algorithm has high stability and simple implementation,and is easy to be applied to embedded systems.It provides a reference for the application of NMHC analyzer in environmental monitoring.关键词
非甲烷总烃/PID算法/气体压力控制/模糊控制Key words
non-methane total hydrocarbon/PID algorithm/gas pressure control/fuzzy control分类
资源环境引用本文复制引用
张敬,张天舒,钱广程,史宇辰,董云升..一种高精度气体压力控制算法设计与实现[J].大气与环境光学学报,2025,20(5):676-686,11.基金项目
国家重点研发计划(2023YFC3705503) （2023YFC3705503）
