目 录
1 课程设计说明 .............................................................................................................................1
1.1 题目说明 ...............................................................................................................................1
1.2 系统设计要求 .......................................................................................................................1
1.3 系统设计指导 .......................................................................................................................1
2 总体控制方案设计 .....................................................................................................................2
2.1 系统的组成 ...........................................................................................................................2
2.2 结构框图 ...............................................................................................................................2
2.3 系统工作原理 .......................................................................................................................2
2.4 系统控制方案 .......................................................................................................................2
2.4.1 不同控制方案的对比 .....................................................................................................2
2.4.2 系统的总体控制方案 .....................................................................................................3
3 系统模型的建立 .........................................................................................................................4
4 系统硬件选择 .............................................................................................................................7
4.1 微控制器选择 .......................................................................................................................7
4.2 A/D 转换器的选择................................................................................................................8
4.3 液位传感器的选型 .............................................................................................................10
4.3.1 液位传感器简介 ...........................................................................................................10
4.3.2 液位传感器选型 ...........................................................................................................10
4.4 水泵的选型 .........................................................................................................................11
5 硬件设计 ...................................................................................................................................12
5.1 控制器总体方案设计 .........................................................................................................12
5.2 硬件电路的设计 .................................................................................................................12
5.2.1 时钟电路 .......................................................................................................................12
5.2.2 复位电路 .......................................................................................................................13
5.2.3 数码管显示电路 ...........................................................................................................13
5.3 系统总电路 .........................................................................................................................14
6 软件设计 ...................................................................................................................................15
6.1 软件设计概要 .....................................................................................................................15
6.2 基于 SIMULINK 的 PID 仿真 ...........................................................................................16
结论 ...............................................................................................................................................18
参考文献 .......................................................................................................................................19
附录 ...............................................................................................................................................20
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