4。1。1 PID控制算法的优点·········································12

4。1。2 PID控制算法原理与实现·····································13

4。1。3 PID算法程序实现···········································13

4。1。4 PID参数整定···············································15

4。2 PLC编程·····················································15

5。MCGS监控界面设计··············································20

5。1 MCGS组态软件简介············································20

5。1。1MCGS软件的构成·············································20

5。1。2MCGS组态软件的功能和特点···································22

5。1。3MCGS组态软件的调试运行······················22 5。2系统组态界面设计 ·······22

结论····························································25