识别强化的双因子免疫控制器及其特性分析  

A recognition-intensified two-cell controller and its characteristic analysis

作　　者：付冬梅[1] 位耀光[2] 郑德玲[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083 [2]中国农业大学信息与电气工程学院,北京100083

出　　处：《控制理论与应用》2007年第4期530-534,共5页Control Theory & Applications

基　　金：国家自然科学基金(60573016);北京市教委重点学科共建项目(XK100080537).

摘　　要：目前完全从生物免疫机理出发构造的免疫控制器都属于自适应变结构比例型控制器,这类控制器不能无偏差地跟踪恒定输入.本文基于一种描述生物免疫功能的双因子免疫非线性反馈模型,结合控制系统的特点,构造出一个识别强化的双因子免疫控制器模型,给出了它的结构形式.对这种识别强化的双因子免疫控制器的一阶跟踪特性和能力进行了理论分析,理论研究和仿真试验均表明该免疫控制器具有无偏差跟踪恒定输入的特性.文中针对一类大滞后被控对象仿真研究了该免疫控制器的记忆特性和抗干扰能力.The current immune controllers constructed completely based on the biological immune mechanism are all self adaptive, structure-changing and proportional controllers. They can not track the invariable input without an error. In this paper, based on the two-cell immune nonlinear feedback model for describing the biology function, and combining it with the control system characteristics, we present a structure form of a recognition-intensified two-cell immune controller. The theoretical analysis is then carried out for the first-order tracking ability of the recognition-intensified two-cell controller. Both the theoretical analysis and the simulation indicate that this immune controller can track the invariable imput with null error. The simulations were performed on a class of controlled systems with large values of time-delay, for testing the memory characteristic and the interference-rejection ability of this immune controller.

关 键 词：人工免疫 免疫控制器 一阶跟踪 仿真 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]