Matlab App Designer与Simulink实时交互详解

Matlab App Designer与Simulink实时交互详解

引用

CSDN

1.

https://blog.csdn.net/m0_52306986/article/details/136944753

本文介绍如何使用Matlab App Designer与Simulink进行实时交互。通过在Simulink中设置模型属性，在App Designer中创建界面，并编写画图函数实现数据的实时显示。

一、Simulink模型设置

为了简单介绍，Simulink模型中只包含Sine Wave、Scope和Out三个模块。

在模型空白处右键，选择"模型属性"，设置initfcn初始化函数和startfcn函数。

二、App Designer界面设计

在App Designer中设计一个简单的界面，包含一个坐标区控件。

三、画图函数实现

关键是要确保函数名与Simulink中设置的函数名一致。主要步骤包括获取数值、当前时间和坐标区，然后进行绘图。

function PlotOnApp(varargin)
% varargin = (block,eventdata) 输入的两个参数是模块和事件
rto1 = get_param('sineexample/Out1','RuntimeObject');
% 获取界面中的绘图句柄
all_tag_objects = findall(0, '-property', 'tag');
all_tags = get(all_tag_objects, 'tag');
[tf, idx] = ismember('UIAxes', all_tags);% 找到坐标区
if tf
    app_plot = all_tag_objects(idx);
end
XData = get_param('sineexample','SimulationTime');%获取当前simulink运行时间
YData = rto1.InputPort(1).Data;
plot(app_plot,XData,YData,'.','Color','r');
hold(app_plot, 'on' );
end

四、运行示意

直接运行Simulink模型，即可看到App中实时显示的正弦波形。

五、完整案例代码

startupFcn

clc;
movegui(app.UIFigure,'center');% 整个APP居中
app.Out1.Tag = 'Out1';         % 设置输出1的标签
app.Out2.Tag = 'Out2';         % 设置输出2的标签
app.UIAxes.Tag = 'UIAxes';     % 设置坐标系的标签
set(app.UIAxes,'Fontname', 'Times New Roman','FontSize',12);
app.RunButton.Enable = "off";
app.GainValueEditField.Value = 1;
app.ConstantValueEditField.Value = 2;
app.Stop.Enable = "off";
%% 设置颜色
colorlist = [242,161,167;
             125,198,155;
             155,215,243;
             251,221,211;
             252,230,207;
             213,234,217;
             216,238,251;
             220,215,235]/255;
app.SelectSimulinkModelPanel.BackgroundColor = colorlist(1,:);
app.InputstoSimulinkModelPanel.BackgroundColor = colorlist(2,:);
app.OutputsfromSimulinkModelPanel.BackgroundColor = colorlist(3,:);
app.ControlPanel.BackgroundColor = colorlist(4,:);
app.PlotPanel.BackgroundColor = colorlist(5,:);
app.UIFigure.Color = colorlist(6,:);

SelectButtonPushed

[app.filename, app.filepath] = uigetfile({'*.slx'});
if isequal(app.filename,0) || isequal(app.filepath,0)
    msgbox('User selected Cancel')
else
    app.EditField.Value = fullfile(app.filepath,app.filename);
end
app.RunButton.Enable = 'on';

RunButtonPushed

cla(app.UIAxes);% 每次运行前先清空坐标区控件
% 把变量分配到工作区 Simulink里面的Gain和Constant模块的数值是从外部给的
assignin('base','gainVal',app.GainValueEditField.Value);       %
assignin('base','constantVal',app.ConstantValueEditField.Value);
simulinkModel = app.filename;
simulinkModel = extractBefore(simulinkModel,'.');
app.clickcounts = app.clickcounts+1;
if app.clickcounts == 1
    disp('########## Opening Simulink-Modell ##########');
    fprintf('Simulink-Modell: %s.slx\n', simulinkModel)
end
open_system(simulinkModel);
if strcmp(app.RunButton.Text,"Run")
    set_param(simulinkModel,'SimulationCommand','start');
    app.RunButton.Text = "Pause";
    app.RunButton.BackgroundColor = [240,207,234]/255;
elseif strcmp(app.RunButton.Text,"Pause")
    set_param(simulinkModel,'SimulationCommand','pause');
    app.RunButton.Text = "Continue";
    app.RunButton.BackgroundColor = [155,220,252]/255;
elseif strcmp(app.RunButton.Text,"Continue")
    set_param(simulinkModel,'SimulationCommand','continue');
    app.RunButton.Text = "Running";
    app.RunButton.BackgroundColor = [202,200,239]/255;
    app.RunButton.Enable = "off";
end
app.Stop.Enable = "on";

StopButtonPushed

cla(app.UIAxes);
simulinkModel = app.filename;
simulinkModel = extractBefore(simulinkModel,'.');
set_param(simulinkModel,'SimulationCommand','stop');
app.RunButton.Text = "Run";
app.Stop.Enable = "off";