电阻炉智能温度控制系统的设计与仿真研究

The Simulation and Design of the Intelligent Fuzzy Control System of Resistance Stove

以电阻炉为控制对象,采用机理分析法对电阻炉加温时的温度对象进行了分析,得到电阻炉的数学模型。针对电阻炉实际生产过程对温度控制的要求及其所具有的时滞性、非线性、模型结构不确定等特点,结合模糊控制技术和常规PID控制方法,组成模糊自整定PID控制器。运用MATLAB软件的Simulink建立电阻炉温度控制系统的仿真模型,并分别用常规PID控制、常规模糊控制和模糊自整定PID控制对电阻炉温控系统进行仿真实验。仿真结果表明,采用模糊自整定PID控制方案,系统的适应能力更强,控制精度更高,动态性能更好,具有一定的推广价值。

This paper considers resistance stove as the modeling object, the temperature object is analyzed by using the principium method and the model of the resistance stove is set up. Since the characteristics of time-delay, nonlinear and uncertain model structure, a fuzzy self-tuning PID control is presented in this paper. And the simulation model of resistance stove is established by using SIMULINK in Matlab, the method of conventional PID, fuzzy control and the fuzzy self-turning control are respectively applied to control the simulation model. The approach shows the characteristics of outstanding adaptability, satisfactory controlling accuracy and good dynamic performance by simulation results.