基于定量反馈理论的气动调节阀控制系统设计  

Design of Pneumatic Control Valve Control System Based on Quantitative Feedback Theory

作　　者：夏勤 方星 刘飞 XIA Qin;FANG Xing;LIU Fei(Key Laboratory of Advanced Process Control for Light Industry Ministry of Education,Jiangnan University,Wuxi 214122,China;Wuxi Pneumatic Technical Research Institute Co.,Ltd.,Wuxi 214072,China)

机构地区：[1]江南大学轻工过程先进控制教育部重点实验室,江苏无锡214122 [2]无锡气动技术研究所有限公司,江苏无锡214072

出　　处：《自动化仪表》2023年第2期32-37,共6页Process Automation Instrumentation

基　　金：国家自然科学基金资助项目(62273165、61833007);中国博士后科学基金资助项目(2021M702505)。

摘　　要：为了使气动调节阀控制系统满足工业过程对于模型不确定性的鲁棒性要求,设计了1种基于定量反馈理论(QFT)的气动调节阀控制系统。基于QFT的控制器是1种二自由度控制器结构,由前置滤波器和反馈控制器组成。QFT对于控制对象的不确定性具有很强的鲁棒性,能够较好地避免气动调节阀控制系统在工业过程中受到的干扰和模型不确定性影响。通过对气动调节阀控制系统进行仿真分析,验证了基于QFT的控制方法能够较好地避免该系统的不确定性,使得该系统具有较强的鲁棒性,满足相应的性能指标要求。与传统基于常规比例积分微分(PID)控制方法的气动调节阀控制系统相比,基于QFT控制方法的气动调节阀控制系统更加适用于工业过程。A pneumatic control valve system based on quantitative feedback theory(QFT) is designed to make the pneumatic control valve control system meet the robustness requirements of industrial processes with respect to model uncertainty. The controller based on QFT is a two-degree-of-freedom controller structure, which consists of a pre-filter and a feedback controller. The QFT with strong robustness to the uncertainty of the control object, can better avoid the disturbance and model uncertainty influence of the pneumatic control valve control system in the industrial process. Through the simulation analysis of the pneumatic control valve control system, it is verified that the QFT-based control method can better handle the uncertainty of the system, which makes the system have strong robustness and meet the corresponding performance index requirements. Compared with the pneumatic control valve control system based on conventional proportional integral differential(PID) control method, the pneumatic control valve control system based on QFT control method is more suitable for industrial processes.

关 键 词：定量反馈理论 鲁棒控制器 气动调节阀 控制系统 不确定性 

分 类 号：TH863[机械工程—仪器科学与技术]