基于家用呼吸机平台的自动混氧控制算法设计  

Automatic oxygen-mixing algorithm designing on household ventilator platform

作　　者：叶初石 王家军[1] YE Chushi;WANG Jiajun(School of Automation,Hangzhou Dianzi University,Zhejiang Hangzhou 310018,China)

机构地区：[1]杭州电子科技大学自动化学院,杭州310018

出　　处：《杭州电子科技大学学报(自然科学版)》2025年第2期59-66,75,共9页Journal of Hangzhou Dianzi University:Natural Sciences

基　　金：浙江省重点研发项目(2021C03034)。

摘　　要：自动混氧可根据设定值实现固定流量、固定氧浓度气体的输出,非常适合应用于家用呼吸机,满足患者的吸氧需求。采用前馈开环控制与反馈闭环控制相结合的控制算法,能够实现快速且稳定的自动混氧控制。首先根据前馈控制和反馈控制原理,设计自动混氧控制系统模型。再通过硬件平台的工作特性设计自动混氧控制系统的各个参数。最后对自动混氧控制系统进行稳态及动态性能验证。实验表明,采用前馈与反馈控制相结合的自动混氧控制系统的稳态性能和动态性能均能满足实际需求。Automatic oxygen-mixing can realize exportation of fixed flow rate and oxygen concentration gas,and can be used on household ventilator to satisfy the oxygen needs of patients.This paper proposes an automatic oxygen-mixing algorithm which integrates feedforward open-loop control and feedback closed-loop control to realize rapidity and stability of automatic oxygen-mixing.Firstly,we designed the model of automatic oxygen-mixing control system by principle of feedforward control and feedback control.Secondly,we designed the parameters of automatic oxygen-mixing control system according to the characteristics of hardware platform.Finally,we verified the stability and dynamic performance.The results show the stability and dynamic performance of the automatic oxygen-mixing can satisfy practical requirements.

关 键 词：自动混氧 前馈控制 反馈控制 

分 类 号：Q471[生物学—生理学]