吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (1): 209-215.doi: 10.13229/j.cnki.jdxbgxb201501031

• 论文 • 上一篇    下一篇

基于Laguerre-Fuzzy Hammerstein模型的增压锅炉非线性预测控制

马修真，赵加凤   

  1. 哈尔滨工程大学 动力与能源工程学院，哈尔滨 150001
  • 收稿日期:2013-06-06 出版日期:2015-02-01 发布日期:2015-02-01
  • 作者简介:马修真(1957)，男，教授，博士生导师.研究方向:动力机械非线性控制.E-mail:maxiuzhen@hrbeu.edu.cn
  • 基金资助:
    中央高校基本科研业务费专项项目(HEUCF100305,HEUCFZ10006).

Nonlinear predictive control for supercharged boiler based on Laguerre-Fuzzy Hammerstein model

MA Xiu-zhen,ZHAO Jia-feng   

  1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001
  • Received:2013-06-06 Online:2015-02-01 Published:2015-02-01

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摘要： 增压锅炉燃烧系统具有强非线性、大滞后、参数时变和不确定性，传统的控制方法很难取得较好的控制效果。Laguerre滤波网络能够以较低的模型阶次逼近系统线性特性，且无需知道系统的滞后时间;Fuzzy模型能够有效描述系统的非线性及不确定性。提出了基于Laguerre-Fuzzy Hammerstein模型的非线性预测控制器并应用于增压锅炉燃烧系统控制器设计中。仿真结果表明:在变负荷情况下，本文提出的控制器能够有效控制过热蒸汽压力迅速稳定在设定值;与单输入预测控制器相比，该控制器综合考虑了两非线性变量带来的影响，且有效地避免了因系统变迟延和不确定性带来的影响，证明了本文方法的有效性。

关键词: 自动控制技术, 非线性预测控制, 增压锅炉, Hammerstein模型

Abstract: Supercharged boiler has the characteristics of strong nonlinearity, big time delay, parameter time-variation and uncertainty, which make it difficult to obtain an ideal control performance using traditional control methods. Since Laguerre filter networks can approximate system linearity with a lower model order without knowing the system delay, while Fuzzy model can describe system nonlinearity and uncertainty effectively, a Nonlinear Model Predictive Controller (NMPC) based on Laguerre-Fuzzy Hammerstein model is proposed and applied in the controller design of supercharged boiler combustion system. Simulation results show that the proposed controller can adjust the main-steam pressure to set-point fast under varying load. Compared to the predictive controller with one input variable, the proposed controller comprehensively considers the influence of the two nonlinear variables on the system, and avoids the influence of the varying time delay and uncertainty, thus validating its effectiveness.

Key words: automatic control technology, nonlinear predictive control, supercharged boiler, Hammerstein model

中图分类号: 

  • TP13
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