精密陶瓷工艺处理炉温度控制系统的设计

发布时间：2018-04-27 13:20

本文选题：精密陶瓷 + 温度控制　；参考：《合肥工业大学》2016年硕士论文

【摘要】：精密陶瓷烧成过程中的温度变化具有非线性、时变性和滞后性的特点,难以得到准确的数学模型和参数,给精确控制带来了巨大的困难。本文重点研究如何更加有效的控制陶瓷烧成过程中的温度,从而得到性能最优的陶瓷,又能节约能源。文中首先研究了国内外温度控制系统的现状,设计了一种基于DSP的精密陶瓷工艺处理炉温度控制系统。该系统以ADSP-BF506F为温度控制系统核心,DSP输出信号通过改变加热功率来控制温度,用K型热电偶检测温度,键盘和LCD显示屏为人机交互接口,组成闭环温度控制系统；在系统软件上以VisualDSP++为集成开发环境,采用C语言编写源程序,主要对A/D转换与温度检测程序、模糊PID算法程序、LCD显示程序等进行了开发设计；建立了陶瓷炉温度控制的数学模型,并给出了模糊PID控制器的具体设计方法,通过MATLAB工具分别对常规PID和模糊PID控制方法进行了仿真分析。实验结果表明模糊PID控制调节时间短、超调量小且稳态误差小,抗干扰能力强,可以达到控制要求。本文设计的精密陶瓷工艺处理炉温度控制系统具有结构简单、运行稳定可靠,且具有较高的控制精度,满足实际应用需求。
[Abstract]:The temperature variation in the firing process of precision ceramics has the characteristics of nonlinear, time-varying and hysteresis. It is difficult to obtain accurate mathematical model and parameters, which brings great difficulties to accurate control. This paper focuses on how to control the temperature of ceramic firing process more effectively, so as to obtain the best performance of ceramics, but also save energy. Firstly, the present situation of temperature control system at home and abroad is studied, and a temperature control system of precision ceramic process treatment furnace based on DSP is designed. In this system, the output signal of ADSP-BF506F is used as the core of the temperature control system to control the temperature by changing the heating power, the temperature is detected by K thermocouple, and the keyboard and LCD display screen are used as the man-machine interface to form the closed-loop temperature control system. In the system software, VisualDSP is used as the integrated development environment and C language is used to write the source program. The A- / D conversion and temperature detection program, the fuzzy PID algorithm program and the LCD display program are mainly developed and designed. The mathematical model of ceramic furnace temperature control is established, and the specific design method of fuzzy PID controller is given. The conventional PID and fuzzy PID control methods are simulated and analyzed by MATLAB tool. The experimental results show that the fuzzy PID control has the advantages of short adjustment time, small overshoot, small steady-state error and strong anti-interference ability, which can meet the control requirements. The temperature control system of the precision ceramic process treatment furnace designed in this paper has the advantages of simple structure, stable and reliable operation, and high control precision, which meets the practical application requirements.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TQ174.6;TP273

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