多变量解耦内模控制研究及在锅炉燃烧系统中的应用  

Research on MIMO Decoupling Internal Model Control and Application in Boiler Combustion Process

作　　者：厉鹏[1] 

机构地区：[1]滨州技术学院化学工程系,山东滨州256600

出　　处：《锅炉技术》2011年第1期19-22,共4页Boiler Technology

摘　　要：针对锅炉燃烧系统存在的多变量耦合及大时滞的特点,提出了多变量解耦内模控制算法。使燃烧控制中受控变量—蒸汽压力、烟气成分(经济燃烧指标)和炉膛负压与操纵变量—燃料量、送风量和引风量组成的燃烧系统控制方案满足:燃料与送风量之间保持一定的比值从而保证燃烧的经济性和锅炉的安全运行;引风量与送风量相适应,保证炉膛负压在一定的范围内。仿真结果表明了算法的可行性和有效性。The multivariable decoupling internal model control is presented,according to the feature of coupling and phase lag of boiler combustion process.This method is applied to decouple controlled variables（steam pressure,composition of oxygen in the flue gas and negative pressure in the combustion chamber） and manipulated variables（fuel,fed air,drawn air）.Fed air is made into proportion with fed fuel in order to ensure the economic demands and safety of boiling process,fed air is proportional to drawn air so that negative pressure in the combustion chamber is constant at the desired value.Simulation results show that this control scheme is reliable and effective.

关 键 词：锅炉燃烧系统 多变量 解耦内模控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]