论文编号:ZD154 论文字数:13205,页数:32
摘 要
随着我国经济的迅速增长，伴随着现代工业自动化水平的提高，能源短缺已成为目前社会各界关注的焦点。钢铁工业降低能耗不仅是中国节能减排工作的需要，也是钢铁工业自身提高效益、实现可持续发展的要求。加热炉是冶金企业主要的过程设备，其自动控制策略是过程控制领域内的一个重要的研究方向。如何使自动控制系统能够确保钢坯的加热质量、节约加热炉的能耗冲恻梦系统的最佳燃烧、延长”加热炉设备的寿命一直是该研究领域主要的研究内容。我国经济正蓬勃发展,钢材需求旺盛，设计一套合理的加热炉燃烧控制系统有其巨大的经济效益，节能、环保意义。本设计以加热炉达到充分燃烧，提高热效率为目的。通过实施加热炉在线燃烧控制来保证空燃比的精度，进而实现节能、环保意义。设计中主要着重考虑加热炉工艺知识，应用自动化控制原理构建一套合理的加热炉燃烧控制系统，通过PID参数整定达到最佳燃烧的控制目的。然后应用MATLAB仿真软件中的工具Simulink工具箱对加热炉燃烧控制系统进行仿真验证系统的可行性。
关键词：加热炉；燃烧控制；双交叉限幅；节能
Design of Pusher-furnace Process Control System
Abstract
With rapid growth in economy and the enhancement of the industrial level, energy shortage becomes the current focus society pay attention to. The steel industry reducing energy consumption in China is not only need of energy-saving and emissions-reducing, but also the requirement of improving its efficiency and achieving sustainable development in the section of iron and steel industry. Furnace is major energy-consuming equipment in rolling production process. How to guarantee the heating of slabs can be effectively rolled and reach an aim to save-energy, which is the direction that we pursuit in the field of metallurgical automation. Chinese economy is growing fast and a lot of steel material is needed, therefore, design of a reasonable burning-control-system of furnace is significant in economy, energy saving and environment-protection. This article takes the full burning and high heating efficient as aim, implement air-fuel-ratio control online to ensure the best burning, energy saving and environment-protection. In the design-heating furnace craft knowledge is mainly considered, applying automated control principle the constructs a set of reasonable combustion control system of heating furnace, and using PID parameter tuning achieves the best burning. Finally, applying Simulink toolbox of the Matlab simulating software makes the simulation of burning-control-system of heating-furnace and verifies the system availability
Key words：Heating Furnace；Burning-control；dual-cross-limit； energy-saving
目 录
1 摘 要 I
2 Abstract II
1 绪论 1
1.1课题背景及竞义 1
1.2 国内外加热炉计算机控制系统研究和应用现状 2
1.3 本文的主要工作 3
2加热炉控制系统设计 4
2.1加热炉工艺优化 4
2.2 燃烧系统设计 5
2.3 炉压控制设计 7
2.4 温度检测设计 8
2.5 流量检测控制设计 9
3 双交叉限幅的改进 11
3.1 控制系统工作原理 11
3.1.1 PID控制原理及特点 11
3.1.2 PID调节概述 12
3.1.3 基于MATLAB /Simulink环境下的PID参数整定 13
3.2 过程建模目的和要求 15
3.2.1 过程建模目的 15
3.2.2 过程建模的要求 15
4 应用MATLAB对加热炉燃烧控制系统进行仿真 17
4.1 建模思想 17
4.2 算法说明 17
4.3 在Matlab中对工艺过程参数建模 19
4.4 限幅器S函数 20
4.5 仿真结果 24
结 论 27
致 谢 28
参考文献 29
