火电厂锅炉过热汽温控制系统优化设计仿真  

Optimization Design and Simulation of Boiler Superheated Steam Temperature Control System in Thermal Power Plant

作　　者：刘旭阳 刘斌[1,2] LIU Xu - yang;LIU Bin(College of Information Science and Engineering, Wuhan University of Science and Teehnology, Wuhan Hubei 430081, China;Engineering Research Center for Metallurgieal Automation and Detecting Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China)

机构地区：[1]武汉科技大学信息科学与工程学院,湖北武汉430081 [2]武汉科技大学教育部冶金自动化与检测技术工程研究中心,湖北武汉430081

出　　处：《计算机仿真》2018年第6期95-100,共6页Computer Simulation

基　　金：国家自然科学基金(51405349)

摘　　要：针对过热汽温控制系统具有大惯性、大时滞特性且模型参数随负荷变化较大,传统控制算法难以获得良好控制性能,提出了IGPC-QFT串级控制算法。改进的广义预测自校正控制作为主控制器来抑制超调,克服系统大时滞特性,定量反馈理论作为副控制器,对导前区不确定性与干扰进行抑制,并设计了一种简便的定量反馈理论控制器设计方法。通过与传统广义预测-比例控制的仿真结果对比,提出的算法可使系统获得较好的跟踪性与鲁棒性,简化了副控制器的设计过程,满足了系统在全工况下运行的控制要求。For the superheated steam temperature control system has the characteristics of large inertia, large time delay, and its model parameters change with loads, it is difficult for the traditional control algorithm to obtain good control performance. An IGPC - QFT cascade control algorithm was proposed. An improved generalized predictive self - tuning control was used as a main controller to suppress the overshoot and overcome the large time delay. The quantitative feedback theory was used as a secondary controller to suppress the uncertainties and disturbance in the leading region of the system. A simple method for QFT controller design was proposed. The numerical simulations show that the proposed IGPC - QFT algorithm can give the controlled system better tracking and robustness than traditional GPC -P algorithm. It simplifies the process of secondary controller design and meets the system control requirements over the entire operating conditions.

关 键 词：过热汽温控制 定量反馈理论 改进的广义预测控制 定量反馈理论控制器设计的简便方法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]