摘   要 电热炉是在工业热处理的生产中广泛使用的一种设备， 电热炉的温度控制系统存在时变性，非线性，滞后性等特征，难以用常规PID的控制器对系统达到很好的控制效果。当控温精度的要求高时，使用传统的控制理论方法难以达到理想控制效果。因此，将模糊控制规则加入对 PID参数的调整，使炉温的控制效果得到良好的提升。 本文借助 MATLAB下的Simulink 工具箱来对照观察仿真图像，对常规PID 控制和模糊 PID 控制方法进行仿真的分析。通过实验结果可以看出当采用常规 PID 进行控制时，只能满足最基本的控制要求，但存在许多缺陷像超调量大、前期震荡大等。采用模糊 PID 控制时，系统的控制变得更加稳定，调节时间缩短且超调量小等性能指标，模糊 PID 控制方式比传统 PID 控制方式有更加出色的控制效果，最终希望模糊PID控制方式在实际中有更深入的应用，促进本理论在控制炉温应用方面的推广和发展。 本文在硬件的设计上，给出了硬件系统各个模块的设计，系统以 AT89C51 位核心，研究一种基于模糊 PID控制的温度控制系统。   38043
毕业论文关键词  模糊 PID  仿真  温度控制   AT89C51单片机  
Abstract Electric heating furnace is a kind of equipment which is widely used in the production of heat treatment industry, electric heating furnace temperature control system in the presence of degeneration, and the nonlinear, hysteretic characteristics, it is difficult to  conventional PID controller on the system reached a good control effect. When temperature control accuracy is high, the ideal control effect is difficult to achieve with the traditional control theory.. Therefore, the fuzzy control rule is added to the PID parameter adjustment, the control effect of temperature to get good ascension. With the help of MATLAB Simulink toolbox to control observation under simulated images on conventional PID control and fuzzy PID control method simulation analysis. The experimental results can be seen when using conventional PID control, we can only meet the most basic control requirements, but there are a number of drawbacks as large overshoot, pre-shock and large. When using fuzzy PID control, control system becomes more stable, adjust the time by a small overshoot and other performance indicators, fuzzy PID control has better control performance than traditional PID control, and ultimately hope fuzzy PID control method in actual there are more in-depth application, to  promote this theory in furnace temperature control applications in the promotion and development. In this paper, hardware design, each module is given hardware system design, system AT89C51-bit core, the development of a temperature control system based on fuzzy PID control.
Keywords   Fuzzy PID   Simulation   Temperature  Control   AT89C51 Microcontroller  
目录
摘要I
AbstractII
1绪论1
1.1课题研究目的和意义1
1.2对国内外发展现状的追踪2
2模糊控制的原理3
2.1模糊控制系统3
2.1.1模糊控制系统的基本概念3
2.1.2模糊控制系统组成4
2.1.3模糊控制基本原理4
2.2模糊PID复合算法5
2.3PID控制器6
2.3.1PID控制的发展6
2.3.2PID控制理论6
2.4PID参数对系统的影响7
2.5PID控制方法的优缺点8
3MATLAB简介10
3.1MATLAB的概述10
3.2SIMULINK仿真工具简介10
3.3SIMULINK仿真流程11
4电热炉的温度的模糊PID智能控制算法与仿真实验12
4.1模糊PID温度智能控制器设计12
4.2模糊PID控制算法仿真实验研究14
4.3PID温度控制与模糊PID温度控制的仿真比较17
5模糊PID系统的温度控制的硬件设计19
5.1系统硬件电路的构成19 AT89C51单片机模糊 ID炉温控制系统设计+电路图:http://www.youerw.com/zidonghua/lunwen_36941.html