文档介绍：摘要
双容水箱液位控制系统是采用先进的控制算法完成对过程液位的控制的控制系统,它在饮料、食品加工、溶液过滤、化工生产等多种行业的生产加工过程中均有广泛应用。在本设计中充分利用自动化仪表技术,计算机技术,通讯技术和自动控制技术,以实现对水箱液位的串级控制。首先对被控对象的模型进行分析,并采用实验建模法求取模型的传递函数。其次,根据被控对象模型和被控过程特性设计串级控制系统,采用动态仿真技术对控制系统的性能进行分析。然后,设计并组建仪表过程控制系统,通过智能调节仪表实现对液位的串级PID控制。最后,借助数据采集模块﹑MCGS组态软件和数字控制器,设计并组建远程计算机过程控制系统,完成控制系统实验和结果分析。
关键词: 液位,模型,PID控制,仪表过程控制系统,计算机过程控制系统
Abstract
Double tank water level control system is the use of advanced control algorithm of process liquid level control system, it is in the beverage, food processing, filtering solution, chemical production and other industries in the production process has been widely used. In the design of the full use of automation technology, computer technology, communication technology and automatic control technology, in order to achieve the water tank liquid level cascade control. Firstly, the object model is analyzed, and the experimental modeling method for model transfer function. Secondly, according to the controlled object model and the controlled process characteristic design of cascade control system, using dynamic simulation technology to the control system performance analysis. Then, design and construction process control instrumentation system, through the intelligent controller for liquid level cascade PID control. Finally, with the help of a data acquisition module, MCGS configuration software and digital controller, design and establishment of a puter process control system, complete control system experiment and result analysis
Keywords: liquid level,model PID control,indicator process control puter process control system
目录
摘要 Ⅰ
Abstract Ⅱ
1 绪论 1
2 被控对象建模 2
水箱模型分析 2
阶跃响应曲线法建立模型 3
3 系统控制方案设计与仿真 7
液位串级控制系统介绍 7
PID控制原理 7
系统控制方案设计 10
控制系统仿真 12
4 建立仪表过程控制系统 17
过程仪表介绍 17
仪表过程控制系统的组建 19
仪表过程控制系统PID参数整定 23
5 模拟计算机过程控制系统 25
计算机过程控制系统硬件设计 25
MCGS软件工程组态 28
组态软件调试 38
6 结论 40
参考文献 41
致谢 42
附录 43
1绪论
双容水箱系统是一种比较常见的工业现场液位系统,在实际生产中,双容水箱控制系统在石油、化工﹑环保﹑水处理﹑冶金等行业