虚拟设计7343839876

I摘要虚拟设计是近年来发展起来的一个新的研究领域，智能控制虚拟实验室则是智能控制教学上的一个很好的工具。鉴于传统实验室需要的设备，资金，场地等问题，利用虚拟实验室进行实验教学能够很大程度上的节约成本，同时用户在计算机前就能完成实验，查看实验结果，也能提高效率，节省时间。本课题主要是建立可以进行智能控制虚拟实验，其模拟的是天煌教仪生产的“THJ-2型高级过程控制系统实验装置”。本设计由三个主要部分构成：虚拟实验室的3D造型、智能控制实验仿真、图形用户界面（GUI）。在具体的实现过程中，利用VRML语言完成虚拟实验室3D模型的建立；通过MATLAB的强大数据处理功能实现了BP神经网络控制实验的仿真和GUI的设计；最后利用MATLAB对系统进行封装，形成独立的可执行程序。用户可通过封装程序界面打开GUI界面，在GUI界面中进行实验，设置参数，并能够察看系统的仿真曲线，实现虚拟实验的效果。关键字：虚拟实验室、VRML、BP神经网络、MATLABIIAbstractVirtualdesignisdevelopedinnewareaofresearchinrecentyears,VirtualIntelligentControlLaboratoryisagoodteachingtoolofIntelligentControlEducation.Inviewoftheneedfortraditionallaboratoryequipment,funds,spaceandotherissues,usingvirtuallaboratoryforexperimentalteachinginalargeextentthecostsavings,whilepeoplewillbeabletobecompletedtheexperimenttoseeresults,butalsoimproveefficiency,savetimebyusingcomputer.Themainissueistheestablishmentofavirtualintelligentcontrolcanbesimulatedlaboratoryequipmentis“THJ-2advancedprocesscontrolsystemexperimental”madebyTianhuangcompany.Thedesignisconsistsofthreemainparts:the3DVirtualLaboratorymodeling,thesimulationofintelligentcontrol,thegraphicaluserinterfaces(GUI).Therealizationofthespecificprocess,byusingofVRMLlanguagetocompletethevirtual3Dmodellaboratory;throughMATLAB'spowerfuldata-processingfunctionstodoaBPneuralnetworkcontrolexperimentsimulationandmakeGUIdesign;thefinal,usingMATLABtoletthesystempackagetoformanindependentexecutableprogram.UserscanopentheGUIinterfacepackageinterface,theGUIinterfaceintheexperiment,setparameters,andbeabletoseethesimulationcurve,theeffectofvirtualexperiments.Keywords:VirtualLaboratory,VRML,BPneuralnetworkcontroller,MATLABIII目录第1章引言...............................................................................................................11.1课题的研究背景及研究目地..........................................................................11.2虚拟实验室的介绍..........................................................................................31.2.1虚拟实验室的概念................................................................................31.2.2虚拟设计的技术基础............................................................................31.2.3虚拟设计的特点....................................................................................41.2.4虚拟设计的优点......................................................................................51.3课题研究的主要内容......................................................................................5第2章VRML虚拟实验设备设计...........................................................................72.1VRML技术基础知识.....................................................................................72.1.1VRML技术概述....................................................................................82.1.2VRML文件组成.....................................................................................82.1.3VRML节点简介.....................................................................................82.2实验装备简介..................................................................................................112.3虚拟实验室的设计..........................................................................................112.3.1部分元件设计及程序............................................................................112.3.2由零件组成控制面板的小单元............................................................142.3.3各控制单元组成完整的控制面板........................................................16第3章神经网络理论...............................................................................................173.1神经网络理论概述..........................................................................................173.2BP神经网络....................................................................................................18第4章基于MATLAB的BP神经网络控制器的设计及其实验仿真.................204.1基于BP神经网络控制器的设计...................................................................204.2BP-PID控制实验仿真....................................................................................234.2.1MATLAB简介......................................................................................234.2.2BP-PID控制实验仿真............................................................................244.3图形用户界面(GUI)的设计............................................................................324.3.1MATLAB图形用户界面简介................................................................324.3.2图形用户界面实现的功能......................................................................344.3.3图形用户界面的实现过程......................................................................344.4系统封装..........................................................................................................374.4.1封装目地................................................................................................374.4.2MATLAB封装具体过程......................................................................38第5章结论...............................................................................................................39参考文献..........................................................................................