可编程气动比例控制系统的设计与实现  

Design and Implement of Programmable Pneumatic Proportional Control System

作　　者：刘景康 龙飞[1,2] 赵坤[1,2] 张浩[1,2] Liu Jingkang;Long Fei;Zhao Kun;Zhang Hao(Beijing Key Laboratory of Communication and Radio Frequency IC Technology for Next Generation,Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,China;Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院微电子研究所新一代通信射频芯片技术北京市重点实验室,北京100029 [2]中国科学院微电子研究所,北京100029 [3]中国科学院大学,北京100049

出　　处：《计算机测量与控制》2018年第7期88-92,共5页Computer Measurement &Control

摘　　要：气动比例阀是医用呼吸机的核心部件;针对呼吸机对控制系统快速性、精确性和平稳性要求越来越高的现状,基于国内某公司试生产的一款气动比例阀,以STM32F767芯片作为控制器核心,采用PID控制与模糊控制相结合的双环控制方式,结合驱动放大电路、UART接口电路、传感器电路,设计了一款气动比例阀流量控制系统;相较传统的比例阀控制器,增加了系统灵活性,稳态和动态性能均有提升,实验表明输出气体流量有效范围7~180L/min,稳态误差,响应时间,输出流量稳定,系统鲁棒性较强,满足医用呼吸机应用要求。Pneumatic proportional valve is the key component of Ventilator.With the ventilator’s increasing requirement for rapidity,accuracy and stability of the controlling system,based on a pneumatic proportional valve produced by a domestic company for trail,take STM32F767 chip as core of the controller,combined PID control with fuzzy control as double-loop control,designed a pneumatic proportional valve flow control system together with drive amplifier,UART port circuit,sensor circuit.Compared with traditional proportional valve controller,increased system flexibility,both the performance in steady and dynamic states has improved,experiment show that effective output flow ranged 7 L/min to 180 L/min,steady state error,response time,output flow is stable and the system is quite robust,basically satisfied the application requirements of ventilator.

关 键 词：模糊控制 PID控制 双环控制 气动比例阀 呼吸机 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]