基于ARM的智能温控系统设计  

Intelligent temperature control system of resistance furnace based on ARM

作　　者：乔和[1] 陈彬 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁阜新123000 [2]吉林省煤矿安全技术培训中心,吉林长春130012

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第5期792-794,共3页Journal of Liaoning Technical University (Natural Science)

摘　　要：针对电阻炉温度控制纯滞后、大惯性环节控制的特点,传统的PID控制可以获得较好的稳态响应特性,但控制上会造成较大的系统超调,无法满足控制精度。应用参考模型自适应方法设计控制器,分析并给出了系统的数学模型,用超稳定理论设计了参考模型自适应PID控制系统,并给出自适应率。以ARM单片机为核心,设计并分析了电阻炉智能温度控制系统硬件电路,由K型热电偶和数字转换芯片MAX6675组成温度检测电路,采用固态继电器来作为温控元件,利用开关特性来控制电路的断开和接通炉温控制主电路。实验结果表明该控制系统超调量小,跟踪速度快,可靠性高,结构紧凑、工作稳定。Regarding to the characteristics of great inertia and dead time delay associated with the temperature control system of resistance furnace,the traditional PID control can obtain a better steady-state response characteristic.However,it might cause a greater overshoot and its control accuracy cannot meet the requirements.A model-reference self-adaptive control system with a given adaptive rate was developed using Popov criterion theory.The hardware of intelligent temperature controller based on ARM single-chip microcomputer was designed with the K-type thermocouple and MAX6675 as a temperature detection circuit,and a solid-state relay as a temperature control element.The main circuit was controlled using the switching characteristics of the solid-state relay t.The experimental results showed that the system has properties of low overshoot,quick response,high steady accuracy and simple structure.

关 键 词：电阻炉 参考模型自适应控制 单片机 温度控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]