Matlab GUI programming skills series articles index:
Matlab GUI programming skills (1): How to make the interface of the GUI editor run in the middle
Matlab GUI programming skills (2): function structure and parameter transmission
Matlab GUI programming skills (3): display the Figure file on the Axe of GUI

Simulink model

Use Matlab's M language to create a new Simulink model, named Test, and open it. The code is as follows:

new_system('test');   % New model
open_system('test');    % Open the model
save_system('test');    % Save the model
close_system('test');  % Off the model
delete('test');              % Delete model

Data transmission between M Files and Simulink

The parameter transmission between the Simulink module and the M file can be usedget_paramandset_paramto fulfill.

M File's connection to Simulink:

1. Open it first in the M filemdlFile, useopen_system('model')；
2. Then use in the M fileset_param()andget_param()Function changes and obtain the parameter value of the module in Simulink;

details as follows:

For example, you have asimulink model documenttest.mdl, Including a nameSineWaveThe sine generator, you need to set its sampling time through the M file. But you don't know where youtest.mdlmiddle,SineWaveThe name of this attribute of the sampling time can be obtained by this command:

get_param('test/SineWave','ObjectParameters')

After the statement runs, some are:

                     SineType: [1x1 struct]
                    TimeSource: [1x1 struct]
                     Amplitude: [1x1 struct]
                          Bias: [1x1 struct]
                     Frequency: [1x1 struct]
                         Phase: [1x1 struct]
                       Samples: [1x1 struct]
                        Offset: [1x1 struct]
                    SampleTime: [1x1 struct]
                VectorParams1D: [1x1 struct]

Seeing, Sampletime is its sampling time.

Okay, you can pass at this timeget_param('test/SineWave','SampleTime')To get the sampling time of the sine generator in the original module.

Similarly, you can pass in the M fileset_param('test/SineWave','SampleTime',Ts)Let's set its sampling time, among themTsTo set the sampling time.

Pack the M function into the Simulink module

Can be applieduser－Defined Functions insideEmbedded MATLAB Function；

The M function can directly change the FCN function input and output when input and multiple output, just save it;

SIM () function

The call format of the SIM () function is:

[t,x,y]=sim(f,tspan,options,ut)

• fThe model name of Simulink
• tspanControl the variable for simulation time
• optionsControl parameters for the model
• utFor external input vector.