摘要
目前所使用的质量流量控制器普遍存在响应的滞后性,从而导致质量流量控制器出现滞后控制,导致油气浓度检测报警系统检定校准装置因配制气体浓度不精确而校准失败。针对油气浓度检测报警系统检定校准装置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,设计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,在原有质量流量控制器的模型中加入控制滞后补偿控制器,其作用是使得气体的控制摆脱滞后性的干扰,使其可以快速并稳定的达到指定的精度。首先使用Simulink仿真对一阶加纯滞后模型的质量流量控制器进行仿真来验证其功能性以及性能,结果为流量误差为0.89%。最终,将设计的一阶加纯滞后模型的质量流量控制器用于实际测试,测得流量误差为0.56%。结果表明,基于一阶加纯滞后模型的质量流量控制器可以减小控制滞后性带来的影响。
The mass flow controllers currently used generally have lag in response,which leads to lag control in the mass flow controller control,which leads to the failure of the calibration of the oil gas concentration detection alarm system verification and calibration device due to the inaccurate concentration of the prepared gas.Aiming at the problem of inaccurate gas concentration caused by the slow change of the controlled gas flow rate of the verification and calibration device of the oil and gas concentration detection and alarm system,this paper designs a verification and calibration of the oil and gas concentration detection and alarm system based on a mass flow controller with a first-order and pure lag model.The device adds a control lag compensation controller to the original mass flow controller model.Its function is to free the gas control from the lag interference,so that it can quickly and stably reach the specified accuracy.First use Simulink simulation to simulate the first-order mass flow controller with pure hysteresis model to verify its functionality and performance.The result is that the flow error is 0.89%.Finally,we used the designed mass flow controller with the first-order plus pure lag model for actual testing,and the measured flow error was 0.56%.The results show that the mass flow controller based on the first-order plus pure delay model can reduce the influence of control delay.
作者
岳彬
Yue Bin(Beijing Aeronautical Technology Research Center,Beijing 100076,China)
出处
《电子测量技术》
北大核心
2021年第7期69-73,共5页
Electronic Measurement Technology
基金
国防基金项目(CX214J018)资助
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
verification equipment for oil vapor concentration alarmer detectors
gas mass flow controller
response lag
first-order plus time delay model
