第一章绪论............................................................................................................31.1清香型白酒简介...............................................................................................31.1.1清香型白酒的传统的酿造技术............................................................31.1.2国内目前发酵控制水平........................................................................31.1.3清香型白酒发酵温度控制总体框图.....................................................4第二章白酒发酵过程自动控制的意义......................................................................42.1清香型白酒发酵工艺简述...............................................................................42.2清香型白酒发酵的温度曲线...........................................................................52.3利用微型计算机控制的可行性分析...............................................................6第三章PLC在发酵过程中的应用............................................................................63.1PLC的特点.......................................................................................................63.2PLC的基本结构...............................................................................................73.3PLC工作的基本原理.......................................................................................83.4PLC的主要功能及应用.................................................................................103.5PLC的控制系统.............................................................................................113.6利用PLC组成的控制方案图解....................................................................144.1CPU的选型....................................................................................................144.2.模拟量扩展模块............................................................................................164.2.2EM231配置.........................................................................................184.2.3EM231的校准和配置位置.................................................................194.2.4EM231输入数据字格式.....................................................................194.3温度变送器.....................................................................................................204.4电动调节阀.....................................................................................................204.5整体硬件系统的组合.....................................................................................21第五章系统软件的设计............................................................................................225.1系统软件实现功能.........................................................................................225.2绘制温度显示组态画面.................................................................................235.2.1变量定义...............................................................................................235.2.2设备连接...............................................................................................235.2.3温度控制主画面...................................................................................235.2.4PID参数整定画面................................................................................245.2.5实时曲线................................
