智能PID算法在炉温度控制系统中的运用  

Application of intelligent PID algorithm in finance temperature control system

作　　者：吴兴纯[1] 赵金燕[1] 杨秀莲[1] 杨燕云[2] 

机构地区：[1]云南农业大学基础与信息工程学院,云南昆明650201 [2]云南农业大学国资处,云南昆明650201

出　　处：《机电工程》2011年第8期948-950,959,共4页Journal of Mechanical & Electrical Engineering

摘　　要：针对工业炉温度控制系统被控参数通常具有时变性、非线性、不确定性等特点,常规PID控制难以满足高精度控制的现状,提出了智能PID算法与PIC1684单片机的温度控制系统。系统利用热电偶检测温度,经温度变送器变换为标准电压信号后送A/D0809转换成数字信号,PIC1684单片机与设定值比较,单片机执行智能PID算法并输出控制量去调节可控硅的触发脉冲,从而实现了温度的实时控制。研究结果表明:该控制器具有静态精度高、自适应能力强、可靠性高、抗干扰性强的特点,炉温控制效果良好。Aiming at the problems of the time-varying,nonlinearity and uncertainty of parameters and the status that traditional PID control is hard to meet the high stable constant-temperature requirement,a new system based on intelligent PID controller and PIC1684 microcomputer was investigated in industrial furnaces.This system used thermocouple to measure the temperature of furnace,and the transmitter carried the signal to A/D0809.Then the PIC1684 microcomputer achieved the deviation according to being given values,carried on an intelligent PID control and outputted the control quantity to adjust the angle of silicon.Thus the system would control temperature.The results show that this temperature control system has the characteristics of static accuracy,adaptability,reliability,and anti-interference.And good effects of temperature is achieved by this controller in electric heaters.

关 键 词：温度控制 智能PID控制 单片机 电加热 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TH39[自动化与计算机技术—控制科学与工程]