摘要
采用Hammerstein模型描述非线性系统时,可以应用增量式函数观测器IFO-K△x设计状态反馈控制系统,数学分析已证明,在不同的前提条件下,Luenberger函数观测器、全维状念观测器和增量式状态观测器均为增量式函数观测器的特例。该文从基于增量式函数观测器的状态反馈控制律作用下的非线性受控系统的闭环系统入手,导出几个重要概念,从而证明基于Hammerstein模型的非线性系统,应用增量式函数观测器设计状态反馈控制系统时,其控制器和观测 器可以独立地设计,即分离原理适用于该文所述之非线性控制系统,为IFO-K△x在热控领域的工程应用奠定理论基础。
The increment function observer (IFO-K△x) can be able to used to design state feedback control system which controlled object has nonlinear characteristics and can be described by model of Hammerstein. It was certified by mathematical analysis that all of Luenberger function observer, full dimension state observer and increment state observer is special case of increment function observer under the different premises conditions. In this paper, starting from the close loop system of nonlinear control system effected under the state feedback control law based on increment function observer, several important concepts have been developed. Thus it is circumstantiated that controller and observer can be designed independently when using increment function observer to design state feedback control system which is nonlinear system based on model of Hammerstein. That is separate principle be the same with nonlinear system described in this paper. The theoretic foundation is established for using IFO- K△x in actual engineering of thermal control field.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第9期262-266,共5页
Proceedings of the CSEE
关键词
火电厂
非线性状态反馈控制系统
IFO-K△x
增量式函数观测器
Thermal power engineering
Nonlinear
State observer
Increment function observer
State feedback
Separate principle
