模糊PID技术在控制锅炉汽包水位的初探
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摘要
目前使用的锅炉自动控制水平较低,存在燃烧不彻底、排烟氧含量偏高、排烟热损失大等问题,直接造成了锅炉热效率低下和大量能源的浪费,同时也给环境带来很大的污染,所以完善锅炉的计算机控制具有重要的意义。采用西门子300PLC为开发平台,设计模糊PID控制器应用于锅炉控制系统克服了锅炉控制系统的大惯性、非线性等特点,并结合PID控制稳态精度高的特点,使控制系统有良好的控制效果。在研究模糊控制与传统PID控制相结合的基础上,以锅炉为对象,,设计了一套完善、实用的自动控制系统。
The boiler automatic control level in our company is low now.There are many problems,such as incomplete burning high oxygen content and great heat loss of exhaust gas.These problems not only results in low boiler thermal efficiency and big waste of energy directly,but also brings about great harm to the surroundings.Therefore,it is importan to perfect the boiler computer control system.Based on Siemens 300PLC platform,Fuzzy-PID controller is designed for the boiler control system in our company to overcome the shortcomings of great inertia and non-linearity of the boiler control system.The whole control system is made have a good effect in combination with high of steady-state accuracy of PID control.On the basis of combining Fuzzy-PID control with traditional PID control,a complete and practical automatic control system is designed for the boiler in our company.
The boiler automatic control level in our company is low now.There are many problems,such as incomplete burning high oxygen content and great heat loss of exhaust gas.These problems not only results in low boiler thermal efficiency and big waste of energy directly,but also brings about great harm to the surroundings.Therefore,it is importan to perfect the boiler computer control system.Based on Siemens 300PLC platform,Fuzzy-PID controller is designed for the boiler control system in our company to overcome the shortcomings of great inertia and non-linearity of the boiler control system.The whole control system is made have a good effect in combination with high of steady-state accuracy of PID control.On the basis of combining Fuzzy-PID control with traditional PID control,a complete and practical automatic control system is designed for the boiler in our company.
引文
[1]孙优贤,孙红.锅炉设备的自动化调节[M].北京:化学工业出版社,1982.
[2]冯俊凯,沈幼庭,杨瑞昌.锅炉原理及计算[M].3版.北京:科学出版社,2003.
[3]李玲玲,等.工业锅炉水位三冲量控制系统的改进[J].河北工业大学学报,2000(12).
[4]徐承宇.模糊控制与实践[M].北京:地震出版社,1998.
[5]潘祥亮,罗利文.模糊PID控制在工业锅炉控制中的应用[J].2004(5).
[6]西门子(中国)有限公司,西门子S7-300/400PLC编程软件使用手册.
[2]冯俊凯,沈幼庭,杨瑞昌.锅炉原理及计算[M].3版.北京:科学出版社,2003.
[3]李玲玲,等.工业锅炉水位三冲量控制系统的改进[J].河北工业大学学报,2000(12).
[4]徐承宇.模糊控制与实践[M].北京:地震出版社,1998.
[5]潘祥亮,罗利文.模糊PID控制在工业锅炉控制中的应用[J].2004(5).
[6]西门子(中国)有限公司,西门子S7-300/400PLC编程软件使用手册.
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