HT100烫金机温度控制系统毕设论文.doc

PAGE 密级：公开 密级：公开 HT100烫金机温度控制系统设计 Design of HT100 Bronzing Machine Temperature Control System 学 院： 专 业 班 级： 学 号： 学 生 姓 名： 指 导 教 师： 年 月 摘 要 ?????? 论文对单片机在温度控制系统中的基本理论和应用技术作了较为全面的介绍。主要目的是用单片机设计一个温度控制系统，通过运用自整定模糊PID控制算法，使得温度保持在200 ℃～400 ℃之间某一恒定温度值上。除硬件设计外，还包括软件设计，该控制系统具有本机给定的功能。 系统包括显示部分、按键部分、报警电路，对IGBT的驱动电路及保护电路都做了详细说明。在控制回路中主要应用了8051单片机、8279芯片、ADC0809芯片等。根据测温范围选择Pt100温度传感器。针对常规PID控制不具有自适应能力，对于时变、非线性系统控制效果不佳的弱点，本文采用自整定模糊PID控制算法，提取温度的数学模型，编辑自整定模糊控制器，并对所设计的温度控制系统进行仿真。 系统的工作过程为：烫金机的加热电路采用中频感应加热方式，通过按键给定温度值并在显示部分显示给定值，用Pt100温度传感器检测温度，温度传感器检测的温度为模拟信号，通过ADC0809进行A/D转换后送到单片机，单片机把测到的温度进行处理，与给定的温度进行对比，然后产生PWM波形来控制IGBT的导通频率，进而控制加热电路，对烫金机加热，达到给定的温度。 关键词：温度控制；8051；模糊PID；温度传感器 Abstract This paper comprehensively introduced the basic theories and application technology of the MCU (Micro Controller Unit) in the control systems of temperature this time. The main purpose to design one temperature controller with MCU, through use fuzzy PID control algorithms, make temperature keep on this invariable temperature value of 200～400 degrees. In addition to hardware design, also includes software design. The controller has the function of given by own machine and top machine. The system includes the display part、key-press、alarm circuit、a detailed description of the IGBT drive circuit and protection circuit. In the control process, 8051﹑8279﹑ADC0809 is used. According to the temperature range Pt100 temperature sensor is selected. It is an abbreviation of the proportion, integral and derivative. Conventional PID control does not have the adaptive capacity, for time-varying, nonlinear system is ineffective, in this paper, self-tuning fuzzy PID control algorithm is used, extract the mathematical model of temperature, edit the self-tuning fuzzy controller, and design a simulation of the temperature control system. The process of this?System is: press gilder heating circuit use medium frequency induction heating through the key give a temperature value and display the giv