内蒙古工业大学本科毕业设计说明书

目 录

引言 ····································································································································· 1

第一章 第一章 给水控制系统的动态特性 ··································································· 3

1.1锅炉给水控制系统的任务 ···················································································· 3

1.2 给水控制对象和各种扰动下水位变化的动态特性 ··········································· 3

1.2.1 给水控制对象的动态特性 ············································································ 3

1.2.2 各种扰动下水位的动态特性 ········································································ 5

第二章 给水自动控制系统的基本要求和基本结构 ······················································· 9

2.1 给水控制系统的基本要求 ··················································································· 9

2.2 给水控制系统的基本结构及分析 ······································································· 9

2.2.1 单冲量给水控制系统 ···················································································· 9

2.2.2 前馈-反馈三冲量给水控制系统 ································································ 10

2.2.3 串极三冲量给水控制系统分析 ·································································· 16

第三章 给水控制系统的无扰切换 ················································································· 20

3.1 测量信号的自动校正 ························································································· 20

3.1.1 水位信号的压力校正 ·················································································· 20

3.1.2 过热蒸汽气流信号的压力、温度校正 ······················································ 22

3.1.3 给水流量信号的温度校正 ·········································································· 23

3.2 给水控制系统的切换 ························································································· 24

3.2.1 给水流量测量装置切换系统 ······································································ 24

3.2.2 大小给水调节阀门的切换 ·········································································· 28

3.2.3 系统的无扰切换 ·························································································· 29

第四章 系统的参数整定及MATLAB仿真 ······································································· 32

4.1 控制系统的参数整定方法 ················································································· 32

4.1.1 广义频率特性法 ·························································································· 32

4.1.2 工程整定法 ·································································································· 33

4.2 调节器的选取 ····································································································· 35

4.3 参数整定及MATLAB仿真 ··············································································· 36

4.3.1 单冲量调节系统的参数整定及MATLAB仿真 ············································ 36

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