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I基于LabVIEW的控制系统仿真摘要在控制理论教学和实验中，存在着设备短缺、教学手段单一等问题，采用虚拟控制系统实验方式可有效地解决这些问题。本文对控制系统仿真的意义与研究现状作了介绍，提出并确定了基于LabVIEW的控制系统仿真的实施方案。应用NI公司的LabVIEW2009、控制设计工具包作为软件开发工具，实现了控制系统的建模、分析与设计这一系列过程的计算机仿真。经过编写程序和发布应用程序，最终开发出了一种交互式实验教学系统。该系统包含信号发生器、典型环节、质点－弹簧－阻尼器系统和一级倒立摆系统四个子模块，用户可进行控制系统建模、性能分析、PID设计、LQR设计等方面的研究。各个子模块运行良好，整个系统具有操作简单、界面友好和实时交互的特点；对于教学和实验的改革和创新具有一定的指导意义。文中详细介绍了该实验教学系统的设计思路与设计过程。主体部分是对系统各个子模块的理论分析、相应的算法分析和虚拟仪器程序的编写，此外还涉及程序的动态调用和发布应用程序等内容。关键词：控制系统；仿真；LabVIEW；倒立摆；实时交互IISimulationofControlSystemBasedonLabVIEWAbstractIntheteachingandexperimentalprocessofcontroltheory,thereexistproblemssuchasequipmentshortages,monotonousteachingmethodsandetc.WecanuseVirtualInstrumenttosolvetheseproblemseffectively.Thispaperintroducesthesignificanceandresearchstatusofthecontrolsystemsimulation,putsforwardanddeterminestheimplementschemeoftheControlSystemSimulationBasedonLabVIEW.UseNI'sproducts(LabVIEW2009,ControlDesignToolkit)assoftwaredevelopmenttoolstorealizecomputersimulationofthecontrolsystemmodeling,analysisanddesignprocess.Afterwritingprogramsandpublishingapplications,wecanachieveaninteractiveexperimentalandteachingsystem.Thesystemconsistsoffoursub-modules:signalgenerator,typicalelements,themass-spring-dampersystemandthesingleinvertedpendulumsystem.Userscandoresearchincontrolsystemmodeling,performanceanalysis,PIDdesign,LQRdesignandotheraspects.Eachsub-moduleofthesystemrunswell,thewholesystemhasthefeaturesasfollows:simple,friendlyinterfaceandreal-timeinteractive.Itwillprovidetheteachingandexperimentfieldwithreformandinnovation.Thispaperdescribesthethinkinganddesignprocessofthesystemindetails.Theoreticalanalysisandalgorithmanalysisforthesub-moduleandVirtualInstrumentprogramswritingarethemainparts.Italsodiscussesthedynamicprograminvocationandpublishingapplicationsandsoon.Keywords:ControlSystem;Simulation;LabVIEW;InvertedPendulum;Real-TimeInteractionI目录1绪论.........................................................................................................................................I1.1课题背景.......................................................................................................................................-1-1.2控制系统仿真的意义....................................................................................................................-1-1.3控制系统仿真的研究现状............................................................................................................-2-1.4本课题研究内容...........................................................................................................................-2-2LabVIEW概述..................................................................................................................-4-2.1虚拟仪器技术...............................................................................................................................-4-2.2控制设计工具包...........................................................................................................................-5-3系统方案的选定...............................................................................................................-7-3.1系统概述.......................................................................................................................................-7-3.2系统方案的比较与选定................................................................................................................-7-3.3系统子模块的规划........................................................................................................................-9-4系统设计.........................................................................................................................-10-4.1信号发生器.................................................................................................................................-10-4.1.1确定方案.............................................................................................................................-10-4.1.2VI设计.................................................................................................................................-10-4.2典型环节.....................................................................................................................................-13-4.2.1建模及理论分析.................................................................................................................-13-4.2.2VI设计.................................................................................................................................-14-4.3质点－弹簧－阻尼器系统..........................................................................................................-18-4.3.1建模与模型转换及其VI设计...........................................................................................-18-4.3.2模型分析及其VI设计.......................................................................................................-21-4.3.3PID设计及其VI设计.........................................................................................................-25-4.4一级倒立摆系统..........................................................................