【正文】 he interference of steam to the drum， causing the false water level，making the reaction of controller， then arousing the large margin vibration of the drum water level． According to the feather of the drum water level， we research the using of the fuzzypid pound control in the boiler drum water level control system． The traditional control mode of threevariable in the drum water level mostly uses PID． The fuzzy control does not need precise mathematical model of the controlled object， it only needs the experience of operator and the data of operating， it has good robustness and is fit to control the system with nonlinearity and time lag， but its static characteristic is dissatisfied， which limits its application． It is usual mode of threevariable drum water level in order to eliminate the static error that using fuzzyPID control， and the simulation with the action of setting value and noise． The result of simulation indicates that the effect of control improves paring with simple fuzzy control and traditional PID control， which can satisfy the control requirement of the drum water level． Key words： drum water level； PID control； fuzzy control； fuzzyPID control； simulation 內蒙古科技大學畢業(yè)設計說明書（畢業(yè)論文） 目 錄 鍋爐汽包液位智能控制系統(tǒng)設計與仿真研究 ......................................................................... I 摘 要 ........................................................................................................................................V Abstract .................................................................................................................................... VI 第一章 引 言 ............................................................................................................................ 1 課題背景與意義 ......................................................................................................... 1 鍋爐控制的研究現狀 ................................................................................................. 3 本文的主要研究內容 ................................................................................................. 5 第二章 控制理論分析 .............................................................................................................. 6 PID 控制理論 ............................................................................................................... 6 模糊控制理論 ............................................................................................................. 8 模糊控制理論的起源與發(fā)展 .................................................................................... 8 模糊控制的基本思想 ................................................................................................ 9 模糊控制系統(tǒng)的組成 ...............................................................................................11 模糊控制器的設計 .................................................................................................. 12 模糊論域、量化因子 和比例因子的選擇 .............................................................. 15 模糊控制的主要優(yōu)點 .............................................................................................. 17 模糊控制存在的問題 .............................................................................................. 17 模糊 PID 控制 .......................................................................................................... 17 模糊自適應 PID 原理簡介 ..................................................................................... 17 多模態(tài)模糊 PID 控制原理 ..................................................................................... 18 多模態(tài)模糊 PID 控制系統(tǒng)實現 ............................................................................. 18 內蒙古科技大學畢業(yè)設計說明書（畢業(yè)論文） 第三章 鍋爐汽包液位系統(tǒng)特性與控制方法分析 ................................................................ 19 汽包液位的動態(tài)特性 ............................................................................................... 19 汽包液位在給水流量作用下的動態(tài)特性 .............................................................. 19 汽包液位在蒸汽流量作用下的動態(tài)特性 .............................................................. 21 鍋爐汽包液位控制 ................................................................................................... 22 單沖量控制系統(tǒng) ...................................................................................................... 23 雙沖量控制系統(tǒng) ...................................................................................................... 24 三沖量控制系統(tǒng) ...................................................................................................... 25 第四章 鍋爐汽包液位 PID 控制系統(tǒng)設計及仿真研究 ........................................................ 27 汽包液位的 PID 控制系統(tǒng)設計 ............................................................................... 27 汽包液位的 PID 控制系統(tǒng)的建立 ......................................................................... 27 PID 參數的整定 ....................................................................................................... 27 仿真研究 ................................................................................................................... 29 關于 MATLAB ........................................................................................................ 29 關于 SIMULINK ..................................................................................................... 30 仿真研究 .................................................................................................................. 30 第五章 多模態(tài)模糊 PID 控制系統(tǒng)設計及仿真研究 ............................................................ 32 模糊控制系統(tǒng)的設計及仿真研究 ........................................................................... 32 模糊控制器的設計 .................................................................................................. 32 模糊控制系統(tǒng)的設計 .............................................................................................. 37 仿真研究 ................................................................................