高海拔低压低氧实验舱模型建立及其控制方式研究  

Study on Model and Control Methods of High Attitude Hypobaric Hypoxia Cabin

作　　者：车守全 卢剑锋[1] 王一达 刘柱 CHE Shou-quan;LU Jian-feng;WANG Yi-da;LIU Zhu(School of Mechanical Engineering,Guizhou University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《机械设计与制造》2020年第10期133-136,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金:(51475097);贵州省科技厅工业攻关项目(黔科合GY[2012]2121)。

摘　　要：针对模拟高海拔实验用的低压低氧舱,运用理论推导和实验拟合的方式建立了舱内气压变化过程的各环节数学模型。以控制舱内高度升降速度和保持模拟高度和高海拔氧分压恒定为目的,采用串级PID和PI控制方式,整定各闭环控制参数,建立了系统控制的Simulink仿真模型。仿真结果显示系统控制在100s内达到了目标升降速度,平稳达到设定高度并且能够长时间保持舱内模拟高度和氧气含量,满足实验舱模拟高海拔环境的要求。文章最后通过实验验证了模型和控制方式。In this paper,a hypobaric hypoxia cabin is presented,the mathematical models of pressure change process are established by means of theoretical deduction and experimental fitting.In the aim of control the speed of attitude change and keep the setting height and partial pressure of oxygen,using cascade PID and PI control methods,then tuning the closed control parameters,establishing the simulation model of the system by Simulink.The simulation results indicate that the system achieves the target speed within 100s,reaches the set height smoothly,and keeps the setting altitude and oxygen content in the cabin for a long time.The results meet the requirements simulate the high attitude environment.Finally,the feasibility of the model and the control method are verified by experiments.

关 键 词：低压低氧 高海拔模拟 串级PID 参数整定 

分 类 号：TH16[机械工程—机械制造及自动化] TH49