智能控制在步进式加热炉温度自动控制中的应用.doc

内蒙古科技大学毕业设计说明书（毕业论文） 智能控制在步进式加热炉温度自动控制中的应用 摘 要 在冶金行业中，步进式加热炉是轧钢生产线上的重要设备之一，目前，加热炉燃烧过程普遍存在能耗高、钢坯温度波动大、温度控制精度低等问题，加热炉具有大延迟、大惯性以及时变性等特性，干扰因素多，属于可控性比较差的一个调节对象。 基于步进式加热炉的上述特点，常规控制方法难以进行有效的控制。本论文针对步进式加热炉的工艺特点，分别采用传统的PID控制、模糊控制及多模态控制对加热炉的燃烧过程进行控制，其中模糊控制和多模态控制属于智能控制。智能控制是依据人对被控对象的控制经验而设计的，它模仿人的思维模式，不依赖被控对象的数学模型，对于处理加热炉温度这种具有大延迟、非线性和对象模型不确定的被控对象有很好的控制效果，从而解决了PID控制存在的响应慢、超调量大的问题，可满足加热炉的控制要求。 本论文采用MATLAB对步进式加热炉PID控制、模糊控制和多模态控制进行了仿真研究，通过观察仿真结果，并逐步通过调整相关参数，全面改善了系统的动态和静态性能，使控制曲线符合预定控制要求。 关键词：步进式加热炉；PID控制；模糊控制；多模态控制；MATLAB 内蒙古科技大学毕业设计说明书（毕业论文） The application of intelligengt control to temperature controlin walking beam furnace Abstract In the metallurgical industry, rolling mill reheating furnace is one of the important equipment in the production line, furnace combustion process is currently prevailing high energy consumption, It includes : non-linear; uncertainty, such as strong coupling, the furnace has a large delay, large inertia and time-varying characteristics, and interference factors which are relatively poor controllability of the object of a regulation. Furnace based on the reheating furnace of the above-mentioned characteristics, the conventional control method difficult to carry out effective control, the paper reheating furnace for the process characteristics, respectively, using the traditional PID control, fuzzy control and multi-mode control for furnace control the combustion process, intelligent control is based on the control of plant design experience, Their mode of thinking to imitate people, nonlinear and uncertain object model of the control object to control a very good effect, so as to solve the PID control and the existence of the traditional fuzzy control to respond to slow, large overshoot and to ensure control of the furnace to meet the practical requirements of production, In this paper, the use of MATLAB on the PID control, fuzzy control and control of multi-mode simulation, observe the simulatio