大纯滞后对象的免疫-Smith控制器研究  

Research on Immune-Smith Controller in Large Time Delay System

作　　者：任伟建[1] 乔建国[1] 

机构地区：[1]大庆石油学院电气信息工程学院,大庆163318

出　　处：《科学技术与工程》2010年第18期4506-4509,共4页Science Technology and Engineering

摘　　要：免疫控制器是借鉴生物系统的免疫机理而设计的一种智能控制器,具有参数调整时间短、抗干扰能力强等特点。免疫算法中的抑制细胞相当于比例积分微分控制器的反馈环节,该细胞只与前面时刻的抗体变化即控制器输出有关,而与系统当前的测量值无关,可以避免由于系统的滞后对控制造成的影响。将免疫控制器和Smith预估器结合设计一种新型控制器,使该控制器既能克服纯滞后对系统性能的影响,又能降低单独采用Smith预估控制时对系统模型准确性的依赖。仿真结果表明,免疫-Smith控制器的性能在模型匹配和失配情况下均优于其它控制器。The immune controller is an intelligent controller which drawing on the immune mechanism of biological system. It has characteristics of short adjustment time,strong anti-interference ability. Immune suppression links of the immune algorithm is equivalent to the feedback link of the proportional integral derivative controller. Immune suppression of the immune controller related to output of the controller and unaffected by system measurements. So it can overcome the time delay. Immune controller and the Smith predictor are combined and design a new kind of controller. It enables the controller to overcome the time delay and lower using Smith controller of reliance on the accuracy of the system model. Simulation results show that the Immune-Smith controller,the performance of matches and mismatch in the model under all circumstances,superior to other controllers.

关 键 词：大纯滞后 免疫算法 Smith算法 PID控制 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]