模糊PID控制器对热力模拟实验机温度控制的优化  

Optimization of temperature control for thermo-mechanical simulator based on fuzzy PID controller

作　　者：冯莹莹[1] 骆宗安[1] 张殿华[1] 苏海龙[1] 王黎筠 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]鞍山科技股份有限公司

出　　处：《冶金自动化》2008年第2期21-24,共4页Metallurgical Industry Automation

基　　金：国家自然科学基金专项资助项目(50227401)

摘　　要：基于热力模拟实验机温度控制系统具有的惯性大、纯滞后等特点,针对在误差较大或实验条件变化时,常规的PID控制器不能满足温度控制精度要求的难题,MMS-300热力模拟实验机采用模糊自整定PID参数控制器,应用模糊集合理论根据不同的偏差e和偏差变化率ec在线自整定参数Kp,Ki,Kd。通过实际温度曲线与设定曲线的对比得出,模糊PID控制器的控制效果良好。Temperature control system of thermo-mechanical simulator is characterized by large inertia and pure delay etc. When error is larger or experimental condition is changed, conventional PID controller can not meet precision requirement of temperature control. Fuzzy self-tuning PID parameter controller was adopted in MMS-300 thermo-mechanical simulator and fuzzy set theory is applied to self-tune parameters Kp,Ki and Kd on-line according to different deviation e and deviation variation rate ec. Through the contrast of actual temperature curve and setting curve,it is concluded that fuzzy PID controller has good control effect.

关 键 词：热力模拟实验机 温度控制系统 模糊PID控制器 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]