2.2.2 存储器...........................................................................................................2
2.2.3 I/0单元...........................................................................................................2
2.2.4 电源部分.......................................................................................................3
2.2.5 扩展接口.......................................................................................................3
2.2.6 通信接口.......................................................................................................3
3 模块方案的选择与论证......................................................................................................................... 3
3.1 总体方案的选择.....................................................................................................3
3.2 各独立模块方案论证.............................................................................................5
3.2.1 温度检测模块...............................................................................................5
3.2.2 主控模块PLC................................................................................................5
3.2.3 功率输出电路与其控制原理的分析...........................................................6
3.2.4 温度调节模块...............................................................................................6
4 系统软件设计............................................................................................................................................. 7
4.1 主要的工作流程.....................................................................................................7
4.2 数字PID的数学建模...............................................................................................7
5.系统介绍....................................................................................................................................................... 9
5.1 现场总线控制系统（FCS）介绍..........................................................................9
5.1.1 系统简介.......................................................................................................9
5.1.2 系统组成.......................................................................................................9
5.1.3 系统特点.....................................................................................................11
5.1.4 系统软件.....................................................................................................11
5.1.5 装置的安全保护体.....................................................................................11
5.2组态软件WINCC介绍...........................................................................................12
6 单容水箱特性测试................................................................................................................................ 12
6.1 工作原理图...........................................................................................................12
6.2 系统工作原理分析...............................................................................................13
6.3 控制系统流程图...................................................................................................15
6.4实验容与步骤........................................................................................................15
6.5 结果分析...............................................................................................................17
6.6 实验曲线所得的结果...........................................................................................20
结论................................................................................................................................................................. 21
参考文献........................................................................................................................................................ 21
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