simulink入门教程

3 Creating a Simulink Model•“Overview of a Simple Model”on page3-2•“Creating the Simple Model”on page3-3•“Connecting Blocks in the Simple Model”on page3-9•“Simulating the Simple Model”on page3-143Creating a Simulink®ModelOverview of a Simple ModelYou can use Simulink software to model dynamic systems and simulate thebehavior of the models.The basic techniques you use to create a simple modelare the same techniques you will use for more complex models.To create this simple model,you need four blocks:•Sine Wave—Generates an input signal for the model.•Integrator—Processes the input signal.•Mux—Multiplexes the input signal and processed signal into a singlesignal.•Scope—Visualizes the signals in the model.After connecting the blocks,they model a system that integrates a sine wavesignal and displays the result along with the original signal.You can build this simple model yourself,starting with“Creating a NewModel”on page3-3.3-2Creating the Simple ModelCreating the Simple ModelIn this section...“Creating a New Model”on page3-3“Adding Blocks to a Model”on page3-4“Moving Blocks in the Model”on page3-8Creating a New ModelBefore creating a model,you need to start Simulink,and then open an emptymodel window.1If Simulink is not running,in the MATLAB Command Window,entersimulinkThe Simulink Library Browser opens.2From the Simulink Library Browser menu,select File>New>Model.A Simulink editor window opens with an empty model in the right pane.3-33Creating a Simulink®Model3Select File>Save as.The Save As dialog box opens.4In the File name box,enter a name for your model,and then click Save.For example,enter simple_model.The software saves your model with the filename simple_model.mdl.Adding Blocks to a ModelTo create a model,you begin by copying blocks from the Simulink LibraryBrowser to the Simulink editor window.For a description of the blocks in thisexample,see“Overview of a Simple Model”on page3-2.1In the Simulink Library Browser,select the Sources library.The Simulink Library Browser displays blocks from the Sources library inthe right pane.3-4Creating the Simple Model3-53Creating a Simulink®Model2Select the Sine Wave block,and then drag it to the editor window.A copy of the Sine Wave block appears in your model.3Add the following blocks to your model in the same way you added theSign Wave block.Library BlockSinks ScopeContinuous IntegratorSignal Routing MuxYour model now has the blocks you need for the simple model.3-6Creating the Simple Model3-73Creating a Simulink®ModelMoving Blocks in the ModelBefore you connect the blocks in your model,you should arrange themlogically to make the signal connections as straightforward as possible.Tomove a block in a model,you can either•Click and drag the block•Select the block,and then press the arrow keys on the keyboard1Move the Scope block after the Mux block output.2Move the Sine Wave and Integrator blocks before the Mux block Inputs.Your model should look similar to the following figure.Your next task is to connect the blocks together with signal lines.See“Connecting Blocks in the Simple Model”on page3-9.3-8Connecting Blocks in the Simple ModelConnecting Blocks in the Simple ModelIn this section...“Block Connections in a Model”on page3-9“Drawing Lines Between Blocks”on page3-9“Drawing a Branch Line”on page3-12Block Connections in a ModelAfter you add blocks to your model,you need to connect them.The connectinglines represent the signals within a model.Most blocks have angle brackets on one or both sides.These angle bracketsrepresent input and output ports:•The>symbol pointing into a block is an input port.•The>symbol pointing out of a block is an output port.Input port Output portDrawing Lines Between BlocksConnect the blocks by drawing lines between output ports and input ports.For how to add blocks to the model in this example,see“Adding Blocks toa Model”on page3-4.1Position your mouse pointer over the output port on the right side of theSine Wave block.3-93Creating a Simulink®Model2Drag a line from the output port to the top input port of the Mux block.While holding the mouse button down,the connecting line is shown as alight colored arrow.3Release the mouse button over the output port.Simulink connects the blocks with an arrow indicating the direction ofsignal flow.4Drag a line from the output port of the Integrator block to the bottom inputport on the Mux block.The Integrator block connects to the Mux block with a signal line.3-10Connecting Blocks in the Simple Model5Select the Mux block,hold down the Shift key,and then select the Scopeblock.A line is drawn between the blocks to connect them.Note The Shift+click shortcut is useful when you are connecting widelyseparated blocks,or when working with complex models.Your model should now look similar to the following figure.3-113Creating a Simulink®ModelDrawing a Branch LineThe simple model is almost complete,but one connection is missing.To finishthe model,you need to connect the Sine Wave block to the Integrator block.This final connection is somewhat different from the other three connections,which all connect output ports to input ports.Because the output port of theSine Wave block already has a connection,you must connect this existing lineto the input port of the Integrator block.The new line,called a branch line,carries the same signal that passes from the Sine Wave block to the Mux block.1Position the mouse pointer on the line between the Sine Wave and theMux block.2Hold down the Ctrl key,and then drag a line to the input port of theIntegrator block input port.This step adds a connection to the existing line and draws a line betweenthe connection and the input port of the Integrator block.3-12Connecting Blocks in the Simple Model3From the File menu,click Save.Your model is now complete.It should look similar to the following figure.After your model is complete,you can simulate the model.See“Simulatingthe Simple Model”on page3-14.3-133Creating a Simulink®ModelSimulating the Simple ModelIn this section...“Setting Simulation Options”on page3-14“Running a Simulation and Observing Results”on page3-15Setting Simulation OptionsBefore you simulate a model,you have to set simulation options.You specifyoptions,such as the stop time and solver,using the Model ConfigurationParameters dialog box.For how to build the model in this example,see“Creating the Simple Model”on page3-3.1In the Simulink editor window,select Simulation>ModelConfiguration Parameters.The Configuration Parameters dialog boxopens to the Solver pane.2In the Stop time field,enter20,and in the Max step size field,enter0.2.3Click OK.The software updates the parameter values with your changes and closesthe Configuration Parameters dialog box.For more information about Simulink configuration parameters,see“Configuration Parameters Dialog Box”.3-14Simulating the Simple Model Running a Simulation and Observing ResultsAfter entering your configuration parameter changes,you are ready tosimulate the simple model and visualize the simulation results.1In the Simulink editor window and from the menu,selectSimulation>Start.The simulation runs,and then stops when it reaches the stop time specifiedin the Model Configuration Parameters dialog box.Tip Alternatively,you can control a simulation by clicking the Startsimulation button and Stop simulation button on the editorwindow toolbar.2Double-click the Scope block.The Scope window opens and displays the simulation results.The plotshows a sine wave signal with the resulting cosine wave signal from theIntegrator block.3-153Creating a Simulink®Model3From the toolbar,click the Parameters button,and then the Graphicstab.The Scope Parameters dialog opens with figure editing commands.4Make changes to the appearance of the figure.For example,select whitefor the Figure and Axes background color,and change the signal line colorsto blue and green.Click the Apply button to see your changes.3-16Simulating the Simple Model5Select File>Close.The Simulink editor window closes with changes to your model and the configuration parameters.3-173Creating a Simulink®Model 3-184 Modeling a Dynamic Control System•“Understanding a Demo Model”on page4-2•“Simulating the Demo Model”on page4-11•“Moving Data Between MATLAB and the Demo Model”on page4-194Modeling a Dynamic Control SystemUnderstanding a Demo ModelIn this section...“Overview of the Demo Model”on page4-2“Opening the Demo Model”on page4-3“Anatomy of the Demo Model”on page4-4“Subsystems in the Demo Model”on page4-5“Subsystems and Masks”on page4-9“Creating a Subsystem”on page4-9“Creating a Subsystem Mask”on page4-10Overview of the Demo ModelThis demo model illustrates how you can use Simulink software to modela dynamic control system.The model defines a heating system and thethermodynamics of a house.It included the outdoor environment,the thermalcharacteristics of a house,and the house heating system.Use this model to explore common Simulink modeling tasks,such as•Grouping multiple blocks into a single subsystem block to simplify a blockdiagram.See“Subsystems in the Demo Model”on page4-5•Customizing the appearance of blocks using the masking feature.See“Creating a Subsystem Mask”on page4-10•Simulating a model and observing the results using a Scope block.See“Running the Simulation”on page4-11•Changing the input parameters of the model to investigate how the systemresponds.See“Changing the Thermostat Setting”on page4-12.•Importing data from the MATLAB workspace into a model beforesimulation.See“Importing Data from the MATLAB Workspace”on page4-19.•Exporting simulation data from the model back to the MATLAB workspace.See“Exporting Simulation Data to the MATLAB Workspace”on page4-23. 4-2Understanding a Demo Model Opening the Demo ModelThe demo model for this example is called sldemo_househeat.It models the heating system and thermodynamics of a house.1Start MATLAB,and then In the MATLAB Command Window,enter sldemo_househeatThe Simulink editor opens with the demo model.4Modeling a Dynamic Control SystemAnatomy of the Demo ModelThe demo model defines the dynamics of the outdoor environment,thethermal characteristics of the house,and the house heating system.It allowsyou to simulate how the thermostat setting and outdoor environment affectthe indoor temperature and cumulative heating costs.The demo model includes many of the same blocks you used to create thesimple model in Chapter3,“Creating a Simulink Model”.These include:•A Scope block(labeled PlotResults)on the far right,displays thesimulation results.•A Mux block at the bottom right,combines the indoor and outdoortemperature signals for the Scope.•A Sine Wave block(labeled Daily Temp Variation)at the bottom left,provides one of three data sources for the model.In the demo model,the thermostat is set to70degrees Fahrenheit.Thesystem models fluctuations in outdoor temperature by applying a sine wavewith amplitude of15degrees to a base temperature of50degrees.The three data inputs(sources)are provided by two Constant blocks(labeledSet Point and Avg Outdoor Temp),and the Sine Wave block(labeled DailyTemp Variation).The Scope block labeled PlotResults is the one output(sink).Understanding a Demo Model Subsystems in the Demo ModelThe sldemo_househeat demo model uses subsystems to simplify theappearance of the block diagram,create reusable components,and customizethe appearance of blocks.A subsystem is a hierarchical grouping of blocks encapsulated by a single Subsystem block.The demo model uses the following subsystems:Thermostat,Heater,House, Fahrenheit to Celsius,and Celsius to Fahrenheit1In the MATLAB Command Window,entersldemo_househeatThe demo model opens in the Simulink editor window.4Modeling a Dynamic Control System2Subsystems can be complex and contain many blocks that might otherwiseclutter a diagram.For example,double-click the House subsystem block toopen it.Contents of House subsystemThe subsystem receives heat flow and external temperature as inputs,which it uses to compute the current room temperature.You could leaveeach of these blocks in the main model window,but combining them as asubsystem helps simplify the block diagram.Understanding a Demo Model3A subsystems can also be simple and contain only a few blocks.Forexample,double-click the Thermostat subsystem block to open it.Contents of Thermostat subsystemThis subsystem models the operation of a thermostat,determining whenthe heating system is on or off.It contains only one Relay block,butlogically represents the thermostat in the block diagram..4Modeling a Dynamic Control SystemUnderstanding a Demo Model Subsystems and MasksSubsystems allows you to group related blocks into one block.They are also reusable,enabling you to implement an algorithm once and use it multiple times.For example,the model contains two instances of identical subsystems named Fahrenheit to Celsius.These subsystems convert the inside and outside temperatures from degrees Fahrenheit to degrees CelsiusYou can customize the appearance of a subsystem by using a process knownas masking.Masking a subsystem allows you to specify a unique icon anddialog box for the Subsystem block.For example,the House and Thermostat subsystems display custom icons that depict physical objects,while the conversion subsystems display custom dialog boxes when you double-clickthem.1Double-click the Fahrenheit to Celsius block.The custom dialog box for the F2C block opens.2To view the underlying blocks in the conversion subsystem,right-click thesubsystem block,point to Mask,and then select Look Under Mask.The editor displays the blocks behind the mask.Creating a SubsystemTo create a subsystem:1In the demo model window,select the set point and Fahrenheit to Celsiusblocks.4Modeling a Dynamic Control System2From the menu,select Diagram>Subsystem&Modeling Reference>Create Subsystem from Selection.The blocks are combined into one subsystem block.For more information about working with subsystems,see“CreatingSubsystems”in the Simulink User’s Guide.Creating a Subsystem MaskTo mask a subsystem:1In the demo model window,right-click the new subsystem block,and thenselect Mask>Add/Edit Mask.The Mask Editor dialog box opens.2From the Command list,select disp(show text in center of block).The dialog box displays the syntax for this command below the list.3In the Icon Drawing commands field,enter disp('SelectTemperature').4Click OK.The software masks the subsystem block with the text you entered.For more information about masking subsystems,see“Working with BlockMasks”in the Simulink User’s Guide.Simulating the Demo ModelSimulating the Demo ModelIn this section...“Running the Simulation”on page4-11“Changing the Thermostat Setting”on page4-12“Changing the Average outdoor Temperature”on page4-14“Changing the Daily Temperature Variation”on page4-16Running the SimulationSimulating the model allows you to observe how the thermostat setting andoutdoor environment affect the indoor temperature and the cumulativeheating cost.1In the demo model window,double-click the Scope block namedPlotResults.The software opens a Scope window that contains two axes with the labelsHeatCost and Temperatures.2From the menu,select Simulation>Start.The software simulates the model.As the simulation runs,the cumulativeheating cost appears on the HeatCost graph at the top of the Scope window.The indoor and outdoor temperatures appear on the Temperatures graphas yellow(top)and magenta(bottom)signals,respectively.4Modeling a Dynamic Control SystemChanging the Thermostat SettingOne of the most powerful benefits of modeling a system with Simulink isthe ability to interactively define the system inputs and observe changes inthe behavior of your model.This allows you to quickly evaluate your modeland validate the simulation results.Change the thermostat setting to68degrees Fahrenheit and observe howthe model responds.1In the Simulink editor window,double-click the Set Point block.TheSource Block Parameters dialog box opens.2In the Constant value field,enter68.Simulating the Demo Model3Click OK.The software applies your changes.4To rerun the simulation,select Simulation>Start.The software simulates the model.In the Scope window,notice that a lower thermostat setting reduces the cumulative heating cost.4Modeling a Dynamic Control SystemChanging the Average outdoor TemperatureChange the average outdoor temperature to45degrees Fahrenheit andobserve how the model responds.1In the Simulink editor window,double-click the Avg Outdoor Temp block.The Source Block Parameters dialog box opens.2In the Constant value field,enter45.Simulating the Demo Model3Click OK.The software applies your changes and closes the dialog box.4To rerun the simulation,select Simulation>Start.The software simulates the model dynamics.In the Scope window,noticethat a colder outdoor temperature increases the cumulative heating cost.4Modeling a Dynamic Control SystemChanging the Daily Temperature VariationDecrease the temperature variation to see how the model responds.1In the Simulink editor window,double-click the Daily Temp Variationblock.The Source Block Parameters dialog box opens.2In the Amplitude field,enter5.3Click OK.The software applies your changes and closes the dialog box.4To rerun the simulation,select Simulation>Start.The software simulates the model.In the Scope window,notice that amore stable outdoor temperature alters the frequency with which theheater operates.Simulating the Demo Model4Modeling a Dynamic Control SystemMoving Data Between MATLAB and the Demo ModelMoving Data Between MATLAB and the Demo ModelIn this section...“Importing Data from the MATLAB Workspace”on page4-19“Exporting Simulation Data to the MATLAB Workspace”on page4-23Importing Data from the MATLAB WorkspaceSimulink also allows you to import data from the MATLAB workspace to themodel input ports.This allows you to import actual physical data into yourmodel.For information about other data import capabilities,see“Importingand Exporting Simulation Data”in the Simulink User’s Guide.Note In this example,you will create a vector of temperature data inMATLAB,and use that data as an input to the Simulink model.To import data from the MATLAB workspace:1In the MATLAB Command Window,create time and temperature data byentering the following commands:x=(0:0.01:4*pi)';y=32+(5*sin(x));z=linspace(0,48,1257)';2In the Simulink editor window,select the Avg Outdoor Temp block,andthen press the Delete key to delete it.3Delete the following items from the model in the same way:•Daily Temp Variation block•Two input signal lines to the Sum block•Sum block4Modeling a Dynamic Control SystemThe model should now look similar to the following figure.Notice that theoutput signal from the Sum block changes to a red,dotted line,indicatingthat it is not connected to a block.4In the demo model window,select View>Library Browser.The Simulink Library Browser window opens.5In the Simulink Library Browser,select the Sources library.6From the Sources library right pane,select the In1block,and then drag itto the model window.Moving Data Between MATLAB and the Demo ModelAn In1block appears in the model window.7Connect the dotted line(originally connected to the Sum block)to the In1 block.8In the Simulink editor window,select Simulation>Configuration Parameters.The Configuration Parameters dialog box opens.9In the menu on the left side of the dialog,select Data Import/Export.The Data Import/Export pane opens.4Modeling a Dynamic Control System10Select the Input check box.11In the Input field,enter[z,y].12Click OK.The software applies your changes and closes the dialog box.13To rerun the simulation,select Simulation>Start.The software simulates the model.In the Scope window,notice that themodel ran using the imported data,showing colder temperatures andhigher heat use.Exporting Simulation Data to the MATLAB Workspace Once you have completed a model,you may want to export your simulation results to MATLAB workspace for further data analysis or visualization.For information about additional data export capabilities,see“Exporting Simulation Data”.To export the HeatCost data from the model to the MATLAB workspace:1In the Simulink Library Browser window,select the Sinks library.2From the Sinks library,select the Out1block,and then drag it to the top right of the demo model window.An Out1block appears in the model window.3Draw a branch line from the HeatCost signal line to the Out1block.For more information,see“Drawing a Branch Line”on page3-12.4Select Simulation>Configuration Parameters.The Configuration Parameters dialog box opens.5From the menu on the left side of the dialog box,select DataImport/Export.The Data Import/Export pane opens.6Select the Time and Output check boxes.7Click OK.The software applies your changes and closes the dialog box.8To rerun the simulation,select Simulation>Start.The software simulates the model and saves the time and HeatCost data to the MATLAB workspace.Notice that the tout and yout variables nowappear in the MATLAB workspace.。

Simulink动态系统仿真入门Simulink是基于MA TLAB的图形化仿真设计环境，是MATLAB 提供的进行动态系统建模、仿真和综合分析的集成软件包。

它使用图形化的系统模块对动态系统进行描述，并在此基础上采用MATLAB 的计算引擎对动态系统在时域内进行求解。

它可以处理的系统包括：线性、非线性、离散、连续及混合、单任务、多任务离散事件等。

在MATLAB7.X版本中，可以直接在Simulink环境中运作的工具箱和模型库很多，已经覆盖了航天、航空、通信、控制、信号处理等等诸多领域，涉及内容专业性很强。

1、Simulink系统的启动由于Simulink和MATLAB是高度集成在一起的，因此启动Simulink必须先启动MA TLAB。

在MA TLAB启动Simulink可以通过在命令窗口输入Simulink，或者点击MATLAB工具栏的Simulink 快速启动图标。

启动Simulink后，出现Simulink的主窗口，选择主菜单File中的New\model，即可以打开系统模型编辑器。

下图依次是MATLAB 主窗口、Simulink主窗口和系统模型编辑窗口，图中的箭头表示了操作顺序。

在打开一个新的系统模型文件以后，用户可以从Simulink模块库中选择适合的系统模块或自定义模块来建立系统模型。

我们通过一个简单的例子来分步说明Simulink建模和仿真的能力。

1）在MATLAB 窗口运行Simulink。

打开Simulink模块库浏览器。

2）点击Source子库前的“+”展开库，可以看到各种信源模块。

3）点击新建图标，打开一个空白型的模型窗口。

4）用鼠标选中需要的信源模块，把它拖入新建的空白模型编辑窗口，生成一个正弦波的复制品。

5）同样将信宿库Sinks中的示波器Scope拷贝到模型窗口。

6）利用鼠标完成两个模块的连线操作，完成一个简单的模型。

7）为进行仿真，双击示波器模块，打开示波器显示屏。

Simulink仿真环境基础学习Simulink是面向框图的仿真软件。

7.1演示一个Simulink的简单程序【例7.1】创建一个正弦信号的仿真模型。

步骤如下：(1) 在MATLAB的命令窗口运行simulink命令，或单击工具栏中的图标，就可以打开Simulink模块库浏览器(Simulink Library Browser) 窗口，如图7.1所示。

图7.1 Simulink界面(2) 单击工具栏上的图标或选择菜单“File”——“New”——“Model”，新建一个名为“untitled”的空白模型窗口。

(3) 在上图的右侧子模块窗口中，单击“Source”子模块库前的“+”(或双击Source)，或者直接在左侧模块和工具箱栏单击Simulink下的Source子模块库，便可看到各种输入源模块。

(4) 用鼠标单击所需要的输入信号源模块“Sine Wave”(正弦信号)，将其拖放到的空白模型窗口“untitled”，则“Sine Wave”模块就被添加到untitled窗口；也可以用鼠标选中“Sine Wave”模块，单击鼠标右键，在快捷菜单中选择“add to 'untitled'”命令，就可以将“Sine Wave”模块添加到untitled窗口，如图7.2所示。

(5) 用同样的方法打开接收模块库“Sinks”，选择其中的“Scope”模块(示波器)拖放到“untitled”窗口中。

(6) 在“untitled”窗口中，用鼠标指向“Sine Wave”右侧的输出端，当光标变为十字符时，按住鼠标拖向“Scope”模块的输入端，松开鼠标按键，就完成了两个模块间的信号线连接，一个简单模型已经建成。

如图7.3所示。

(7) 开始仿真，单击“untitled”模型窗口中“开始仿真”图标，或者选择菜单“Simulink”——“Start”，则仿真开始。

双击“Scope”模块出现示波器显示屏，可以看到黄色的正弦波形。

Simulink基本操作（2014.5 兰交大萌芽）Simulink是MATLAB软件所带的软件仿真工具。

其强大的功能几乎可以满足所有的系统仿真。

要掌握基本的仿真操作，必须认识仿真各个模块的英文名称。

其实记住图形是干嘛的即可。

说实话在运用外语软件时，英语真是个让人头疼的问题。

不过，得必须记住的是，在任务/现实面前，只能向前迈步。

下面我们介绍Simulink的基本操作，以截图为主。

一、1.打开MATLAB软件，点击Simulink按钮，进入Simulink仿真界面。

点击进入simulink2.新建*-mdl文件。

也可以打开已有的*-mdl文件进行编辑或仿真。

点击新建3.出现*-mdl界面。

现在进可以编辑机构框图了。

4.完成后，点击运行按钮，同时保存文件位置，注意文件地址要明确。

运行按钮Simulink给我们的基本模块结构很多，都在Simulink library browser窗口中。

其中有基本模块和专业模块。

常用基本模块。

二、下面，我们举例说明其简单的使用说明。

以下图为例。

该图为计算机控制系统的最少拍有纹波控制系统。

1.首先，添加各模块，同时修改其参数值，还可以边添加连线。

2.右键点击Add to …即可添加模块到*-mdl文件中。

点击右键点击我们可以改变其位置和大小。

3.再依次添加这两个。

发现在*-mdl文件中出现以下现象，不要着急！4.这时我们可以把他们移开（点击一个，拉开，再点击一个，拉开）同时放大合适的比例。

5.修改其属性的选中模块，双击打开。

比如Sum修改点击ok 得到6.双击Mux,在option中选择signals 点击ok,得连线鼠标放在箭头处，拉动，放入入口箭头处即可。

7.题目里出现两个相同模块的，可以进行复制、粘贴。

得到两个模块后在进行属性和参数的修改8.接着进行别的模块添加工作。

9.模块添加完成。

进行属性和参数设置，得到注;为了能让大家看的清楚些，我把布局缩小了，在自己实验仿真时，完全可以放开成大窗口，将模块放大，更清晰明了，不要小家子气。

Simulink 快速入门要构建模型, 可以使用Simulink® Editor 和Library Browser。

启动 MATLAB 软件启动 Simulink 之前, 请先启动MATLAB®。

请参阅启动和关闭(MATLAB)。

配置 MATLAB 以启动 Simulink您在 MATLAB 会话中打开第一个模型时需要的时间比打开后续模型长, 因为默认情况下, MATLAB 会在打开第一个模型时启动 Simulink。

这种即时启动Simulink 的方法可以缩短 MATLAB 启动时间, 避免不必要的系统内存占用。

•要快速打开第一个模型, 您可以配置 MATLAB, 在它启动时同时启动Simulink。

要启动 Simulink 而不打开模型或 Library Browser, 请使用start_simulink。

•根据 MATLAB 的启动方式, 恰当使用此命令：•在 MATLAB startup.m文件中在操作系统命令行中, 使用matlab 命令和-r 开关例如, 要在运行Microsoft®Windows®操作系统的计算机上启动 MATLAB 时启动 Simulink, 请创建具有以下目标的桌面快捷方式：matlabroot\bin\win64\matlab.exe -r start_simulink在 Macintosh 和Linux®计算机上, 可在启动 MATLAB 时使用以下命令启动Simulink 软件:matlab -r start_simulink打开 Simulink Editor•要打开 Simulink Editor, 您可以:•创建一个模型。

在 MATLAB 的Home 选项卡上, 点击Simulink 并选择一个模型模板。

或者, 如果您已经打开了 Library Browser, 请点击New Model 按钮/。

有关创建模型的其他方法, 请参阅创建模型。

matlab之simulink最通俗教程Simulink是MATLAB的一个重要工具箱，用于建模和仿真控制系统。

Simulink提供了一种图形化建模环境，可以方便地构建复杂系统，并对其进行仿真和分析。

本文将详细介绍Simulink的基本原理和使用方法，以便初学者快速入门。

Simulink模型由各种模块组成，这些模块可以是系统组件、数学算法或信号处理函数。

用户可以使用Simulink库中的预定义模块，也可以自己编写MATLAB函数来创建自定义模块。

模块之间的连接通过信号线进行，可以传递各种类型的信号，如数值、布尔值和字符串。

使用Simulink建模的第一步是创建一个新模型。

在MATLAB命令窗口中输入“simulink”命令即可打开Simulink库浏览器。

然后，可以从左侧的“Simulink Library Browser”面板中拖动所需的模块到模型窗口中。

常用的模块包括输入输出模块、数学运算模块和逻辑控制模块。

在模型中添加模块后，可以使用鼠标将它们连接在一起。

要创建连接线，只需点击模块输出端口并将鼠标拖动到另一个模块的输入端口。

连接线将自动连接两个模块，形成信号传递路径。

连接线上可以添加箭头标记，用于指定信号的流动方向。

模型的参数和设置可以在模型窗口的右侧“Properties”面板中进行调整。

例如，可以设置模块的初始状态、仿真时间范围和采样时间。

还可以为模块添加注释、设置显示颜色和调整模块大小等。

Simulink提供了多种仿真和分析工具，用于评估模型的性能和行为。

可以使用“Simulate”按钮开始仿真并观察模型的实时响应。

仿真结果可以以图表或波形图的形式显示，并可以保存和导出到MATLAB工作空间中进行后续处理。

还可以使用模型验证和优化工具来检查模型的准确性和效率。

除了基本的建模和仿真功能外，Simulink还支持代码生成和硬件连接。

可以将Simulink模型转换为C代码，并嵌入到嵌入式系统中。

使用simulink建模、仿真、分析Tool for Model-Based Design仿真工具分析工具与MATLAB的完整结合定义输入为分析和图形化存储输出数据通过调用MATLAB操作和函数在模型内部执行函数Model-Based Design可以快速、有效的建立动态模型，包括控制系统、信号分析、通信系统。

通过以下几点提高效率• 在工程团队使用相同的设计环境。

• 将设计与需求直接连接• 将设计与测试联合使用可以随时确认和纠正错误• 通过多畴仿真来简练计算程序• 自动生成嵌入式软件代码•开发和复用测试套件• 自动生成参考资料• 在多个处理器和硬件对象上重用设计可有效利用系统Model-Based Design Process六步建立模型1.定义系统2.确定系统元素3.方程式建立系统4.建立Simulink Block Diagram5.进行仿真6.验证仿真结果在simulink中建立模型前完成前三步。

1.定义系统先定义系统，大的系统要分块完成，再组合。

例如sldemo_househeat家庭供暖系统，分成三部分：加热部分恒温部分热量动态部分建立这个模型的有效方法是，单独考虑系统的每一部分。

2.确定系统元素确定系统的元素的三种类型• Parameters （参数）— System values that remain constant unless you change them（系统值在不更改时为常数）• States（状态）— Variables in the system that change over time（系统中的变量随时间变化）• Signals （信号）— Input and output values that change dynamically during a simulation（输入和输出值在仿真期间动态变化）方程式建立模型第三步，用数学方程式描述系统。

对于每一部分，使用确定的系统元素用数学方式描述系统。

simulink操作流程Simulink操作流程。

一、啥是Simulink呢？Simulink呀，就像是一个超级好玩的积木搭建世界。

它是MATLAB里的一个超酷的工具，让咱们可以轻松地构建各种各样的系统模型呢。

比如说，你要是想模拟一个汽车的行驶过程，或者是一个电路的工作状态，Simulink就可以帮你搞定。

它就像一个万能的小助手，只要你有想法，就能在这个小天地里把想法变成模型。

二、打开Simulink的大门。

1. 先得打开MATLAB哦。

这就像是进入魔法世界得先找到入口一样。

打开MATLAB 之后呢，在它的主界面里，就能看到Simulink的图标啦，就像一个小宝藏的入口标志。

轻轻一点那个图标，就进入到Simulink的世界咯。

2. 刚进去的时候，可能会觉得有点眼花缭乱。

不过别担心，这就像你第一次走进一个超级大的游乐场，到处都是新鲜好玩的东西。

你会看到一个大大的空白区域，这就是咱们要大展身手的地方啦。

三、开始搭积木——构建模型。

1. 找模块。

- 在Simulink的左边有一个长长的库，这里面藏着各种各样的模块，就像一个个小零件。

比如说，如果你要构建一个数学计算的模型，就能在Math Operations这个库里找到加法、减法、乘法之类的模块。

这些模块长得都挺有趣的，就像一个个小方块，上面还有一些简单的标识，让你一眼就能看出来它是干啥的。

- 要是想做个信号处理的模型，Signal Processing库里的模块就派上用场啦。

你可以像在玩具箱里找玩具一样，在这些库里翻找你需要的模块。

2. 拖模块。

- 当你找到想要的模块之后呢，就可以用鼠标把它拖到中间的空白区域啦。

这感觉就像从玩具箱里拿出一个小积木，然后放到搭建台上。

比如说，你拖了一个正弦波模块到中间，它就静静地待在那儿，等着和其他模块交朋友呢。

3. 连接模块。

- 光有孤零零的模块可不行，还得把它们连接起来。

这就像把小积木用小棍子连接起来一样。

用鼠标点住一个模块的输出口（一般是小箭头），然后拖到另一个模块的输入口上，就把它们连接起来啦。