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火电厂锅炉蒸汽温度控制器软件部分设计
目 录
摘 要 I
Abstract II
2.1锅炉控制系统 12
2.1.1燃烧控制系统 12
2.1.3给水控制系统 13
2.1.4辅助控制系统 14
2.2锅炉系统的控制任务 14
2.2.1控制汽包水位 14
2.2.3控制蒸汽压力 14
2.2.4维持经济燃烧 15
2.3.2模块简介 16
2.3.3工作原理 18
2. 4微型计算机选择 18
2.4.1总体选择方案 18
第3章 系统控制算法设计 20
3.1 系统的数学模型 20
3.1.1控制系统方框图 20
3.1.2控制系统流程图 20
3.2 模糊控制算法设计 21
3.2.1模糊控制器 21
3.2.2 PID控制器 23
第4章 系统控制软件设计 25
4.2.1主程序 25
4.2.2中断服务程序 26
4.2.3子程序 29
第5章 MATLAB仿真 34
5.1计算机仿真的介绍 34
5.2控制系统仿真研究 34
参考文献 43
致谢 44
程序清单 45
摘 要
在整个锅炉的运行中，过热蒸汽温度是非常重要的控制参数。它是锅炉运行质量的重要标准之一，如果过热蒸汽温度过高，可能造成过热器蒸汽管道损坏；过热蒸汽温度过低，会降低内功率。所以在锅炉运行中，必须保持过热蒸汽温度稳定在规定值附近。
论文介绍了模糊控制在锅炉过热蒸汽温度中的应用，采用模糊控制系统的思路，并用此方法控制燃煤锅炉的过热蒸汽温度，使得锅炉过热蒸汽温度即使在扰动幅度较大的情况下仍能保持平稳。模糊控制的控制算法不依赖于对象的数学模型,算法简单,易于实现,且对干扰和对象模型时变具有较强的适应性，它能根据输出偏差的大小进行自动调节，使输出达到给定值。能提高国内锅炉的燃烧效率、燃料适应性、负荷调节性能、污染、灰渣等众多独特优点而受到越来越广泛的重视，在电力、供热、工厂蒸汽生产中得到越来越广泛的应用。
关键词：锅炉；燃煤；过热蒸汽温度；模糊控制；控制系统；MATLAB；
Abstract
Operation in the entire boiler, superheated steam temperature control is very important parameter. It is an important criterion for the quality of the boiler to run one of, if superheated steam temperature, steam pipe may cause damage to the superheater; superheated steam temperature is too low, will reduce the power. So in the boiler operation, superheated steam temperature stability must be maintained in the vicinity of the specified value.
This paper introduces fuzzy control in the boiler superheated steam temperature in the application of fuzzy control system of thought, and used this method to control coal-fired boiler superheated steam temperature, making the boiler superheated steam temperature even in the case of the disturbance amplitude can maintain a larger stable. Control algorithm of fuzzy control does not depend on the mathematical model of the object, the algorithm is simple, easy to implement, and the object model of time-varying interference and has strong adaptability, it can bias the size of the output to automatically adjust the output to achieve a given value. Can improve the domestic boiler combustion efficiency, fuel flexibility, load regulation performance, pollution, ash and many other unique advantages are more widely appreciated, in the electricity, heating, steam production plant to get more and more applications .
Keywords: boiler; coal; superheated steam temperature; fuzzy control; control system; MATLAB;
