摘要
在系统对象与内部模型误差较大时,内模控制依靠滤波器系数的调整去整定控制器参数,这会牺牲系统的快速性.为解决该问题,文中提出了基于虚拟参考反馈校正法(VRFT)的内模控制方法,同步实现了过程模型的辨识与内模控制器的设计.文中首先建立了内模控制与VRFT的联系;然后基于VRFT对内模控制器进行设计,推导出合理滤波器的具体表达式,利用此滤波器对控制器参数及内部模型参数进行优化,从而使设计的整个内模控制结构与给定的理想传递函数性能一致.仿真实验结果表明,虽然文中所提方法与传统内模控制器设计方法的控制效果比较接近,但前者具有更快的响应速度及更好的跟踪性能,说明文中所提控制方法是有效的.
During the internal model control in the existence of great difference between real model and internal model,the adjustment of filter coefficient for controller parameter determination may result in the decrease of systems response speed. In order to solve this problem,an internal model control method on the basis of virtual reference feedback tuning（ VRFT） is proposed,and the identification of the process model as well as the design of the internal model controller is implemented simultaneously. Firstly,the connection between internal model control and VRFT is established. Then,an internal model controller is designed on the basis of VRFT,and a specific expression of the reasonable filter is derived. Finally,the parameters of the controller and the internal model are optimized by using the designed filter,which makes the designed controller structure accords with the given ideal transfer function well. Simulated results show that,though the proposed method presents a control effect similar to the traditional controller design method, the former is more effective thanks to its faster response and higher tracking performance.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第5期66-72,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61374188)~~
关键词
内模控制
内部模型
滤波器
虚拟参考反馈校正法
优化
internal model control
internal model
filter
virtual reference feedback tuning
optimization
