一种灌装过程计算机动态仿真系统的开发

The development of a dynamic simulation system of a filling process

简要剖析了液态化学品灌装工艺流程及其灌装原理,应用物料平衡、气体状态方程和过程技术数据,通过微分方程法和动态补偿法等方法建立灌装过程动态仿真数学模型。基于单机智能控制(intelligentprocesscontrol,IPC)仿真模式,应用自控组态软件Century Star,研究了过程的动态仿真实现方法,确定了仿真系统的总体结构组成、总体技术方案与原理,开发了仿真系统的图形用户操作界面,完成了仿真工艺流程图、各类仿真命令按钮及其显示画面、以及流程中各类可操作部件及其参数调整仿真操作画面的设计与命令语言编程,用Visual C++(VC++)开发了模型运算软件,生成了DLL,库函数,与图形用户界面集成,研制了一套完备的动态仿真系统,实现了灌装工艺过程的全面动态仿真。最后系统地进行了灌装过程的原理性仿真试验,获得了满意的仿真结果,优化了灌装过程工艺运行条件。

The flow sheet and operation principle of a liquid filling process was briefly discussed, and the dynamic simulation mathematic models of the filling process were developed in detail using the mass balance equations, gas state equations and historical process data. Based on the Intelligent Process Control （IPC） simulation mode, the overall structure and the development scheme of the filling process simulation system was designed. A dynamic simulation system of the filling process was successfully developed, by taking a typical SCADA （supervisory control and data acquisition） configuration software named Century Star as GUI （graphical user interface） development platform, and integrating with a DLL （dynamic link library） function program to perform the calculation of the simulation models programmed using Visual C＋＋. The development of the simulation GUI included the design and Command Language programming of simulated process flow sheet diagrams, simulation command buttons and their displaying diagrams, and the operation and parameters adjustment diagrams of all kinds of manipulators in the process flow sheets. The overall simulation operation of the filling process was fairly good achieved. Then some comprehensive and systematic simulation tests of the filling process were carried out. The simulation results show that the simulation system could satisfy the filling process research and design requirements very well, and the main process operation parameters were optimized through these simulation tests.