焙烧炉燃烧控制系统的设计
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密 惠 保
摘要
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工业自动化涉及的范围很广，过程控制是其中最重要的一个分支。它主要针对工业过程的五大参数，即温度、压力、流量、液位(或物位)、成分和特性等参数的控制问题。过程控制覆盖了很多工业部门，例如石油、化工、电力、冶金、轻工、纺织等部门，在国民经济中所占有的地位极其重要。根据实际应用领域和工艺过程的不同，所采用的控制方式及其侧重点也不相同。而在大量的工业生产中燃烧都是必要的一环，从燃烧角度来说，有燃油、燃煤、燃气的区别。虽然燃烧的应用场合和燃料可能不同，但燃烧过程的控制都不外是燃烧控制、温度控制、燃烧程度控制、安全性控制、节能控制等。本文仅以燃油蒸汽锅炉为例说明燃烧系统中具有一定普遍性的控制问题。本次课题的目的就是基于生产实际的需求，针对蒸汽压力控制、燃料空气比值控制和炉膛负压控制进行系统框架设计并在MATLAB环境下建立模型、进行控制算法的实现研究。其主要采用了MATLAB中的SIMULINK工具箱进行仿真，通过模拟示波器中的波形来调节参数，改良控制效果。
关键字： 燃烧控制系统，MATLAB，过程控制，SIMULINK
THE DESIGN AND SIMULATION OF THE COMBUSTION CONTROL SYSTEM BASED ON FUEL STEAM BOILER
ABSTRACT
Industrial automation involve a very wide range, while process control is one of the most important branches. It mainly refer to control techniques of five industrial processes parameters which are temperature, pressure, and flow, liquid level (or bits), composition and characteristics. Process control covers many industries, such as petroleum, chemical industry, electric power, metallurgy, light industry and textile department.It occupied an extremely important position of the national economy.The control modes and their emphasis depend on the different actual application and process engineering.Combustion is essential in the industrial production.Burning speaking, it can be divide into fuel, coal and gas. Although burning applications and fuel combustion process may be different, the control of burning process all involve burning control, temperature control and burning level control, safety control, degree of saving energy control etc. This paper only to take fuel steam boiler combustion system as an example,it illustrates the control problems with certain universality in the combustion system. The purpose of this subject is to design the system framework for steam pressure control, fuel air ratio control and hearth negative pressure based on the actual production needs, also make model in the MATLAB environment as well as research for the algorithm of control . It mainly uses the MATLAB and SIMULINK toolbox, adjusting the parameters in terms of the waveform of oscilloscope.As a result, the control effect improved.