基于一阶加纯滞后模型的高精度气体流量控制算法设计  

Design of High-precision Gas Flow Control Algorithm Based on the First-order Plus Time Delay Model

作　　者：岳彬 汪潇雨 石晓康 YUE Bin;WANG Xiao-yu;SHI Xiao-kang(Beijing Aeronautical Technology Research Center,Beijing 100076,China;93121 PLA Troops,Beijing 100720,China)

机构地区：[1]北京航空工程技术研究中心,北京100076 [2]93121部队,北京100720

出　　处：《自动化与仪表》2021年第3期24-27,共4页Automation & Instrumentation

基　　金：国防基金资助项目(CX214J018)。

摘　　要：为解决油气浓度检测报警系统检定校准装置使用时,因所控气体流量变化慢而导致配制气体浓度不精确的问题,该文设计了一种基于一阶加纯滞后模型的质量流量控制器的油气浓度检测报警系统检定校准装置,该装置可以精确地控制高浓度标准气体和稀释气体流量,从而精确地控制标准气体的配制浓度。目前所使用的浓度流量传感器普遍存在响应滞后,导致质量流量控制器出现滞后控制,最终导致所配置气体浓度不准确和响应慢的问题。经过实验验证,该系统对于质量流量控制油气浓度的滞后性具有消除作用。In order to solve the problem of inaccurate gas concentration caused by the slow change of the controlled gas flow when using the calibration device of the oil and gas concentration detection alarm system,this paper designs an oil and gas concentration detection based on a first-order mass flow controller with a pure hysteresis model.The alarm system calibration device can accurately control the flow of high-concentration standard gas and diluent gas,so as to accurately control the concentration of standard gas.The concentration flow sensor currently used generally has a lag in response,which leads to lag control in the control of the mass flow controller,and ultimately leads to an accurate and slow response of the configured gas concentration.The experimental verification shows that this system can eliminate the hysteresis of mass flow control of oil and gas concentration.

关 键 词：油气浓度检测报警系统检定校准装置 质量流量控制器 响应迟滞 一阶加纯滞后模型 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]