过热汽温系统无记忆状态反馈H_∞鲁棒预测控制  

Design of H_∞ RMPC Based on Memoryless Feedback Strategy for Superheated Steam Temperature

作　　者：韩璞[1] 刘淼[1] 王东风[1] 贾昊[1] 

机构地区：[1]华北电力大学自动化系河北省发电过程仿真与优化控制工程技术研究中心,河北保定071003

出　　处：《动力工程学报》2018年第1期36-42,49,共8页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(71471060);山西省煤基重点科技攻关资助项目(MD2014-03-06-02);中央高校基本科研业务费资助项目(2017XS135)

摘　　要：针对火电厂过热汽温大延迟、大惯性和模型不确定等特性,提出了一种多包不确定离散系统的无记忆状态反馈H_∞鲁棒预测控制(HRPC)方法.该方法将鲁棒预测控制、预测控制滚动优化的优点和无记忆反馈控制结合在一起,采用多步控制策略,推导出无记忆状态反馈HRPC的控制律,在不同负荷下对某600 MW机组进行了过热汽温串级控制的仿真实验,并对串级HRPC控制(HRPC-P)与串级PID控制(PID-P)、动态矩阵串级控制(DMC-P)进行比较.结果表明:HRPC-P控制器具有良好的跟踪性能,比PID-P控制器和DMC-P控制器具有更强的鲁棒性,而且减少了控制器优化参数的数量,对工程应用具有一定的参考价值.Considering the dynamic characteristics of boiler superheated steam temperature, such as large delay, great inertia and model uncertainty behavior, etc. , an H∞ robust model predictive control （HRPC） algorithm was proposed for the uncertain multi-model system based on memoryless feedback strategy, which combines the advantages of robust control and predictive control with memoryless feedback control to deduce the memoryless state feedback HRPC law using multi-step control strategy. The controller pro- posed was then applied to simulate the superheated steam temperature of a 600 MW power plant at differ- ent loads, and a comparison was subsequently made among the HRPC-P, conventional PID cascade control （PID-P） and the dynamic matrix cascade control （DMC-P） algorithm. Results show that both the tracking and the robust performance of HRPC P are superior to those of PID-P and DMC P, with fewer parameters to be optimized, which therefore may serve as a reference for application in actual engineering projects.

关 键 词：过热汽温 鲁棒预测控制 H∞ 跟踪控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]