Accessing Simulink Test Signals by Name

I am trying to create custom Criteria for a Simulation Test. The Test Result depends on the final value of some signals, as such I am trying to access said signals in the Custom Criteria Function.

Entering this code into the box...

outobj = TestResult.getOutputRuns;
x_pos = outobj.getSignalByIndex(1)
sltest_simout.get('x_vec_no_airdrag:1(1)')
sltest_simout.get('x_vec_no_airdrag')

...yields the following Output in the MATLAB Command Window.

x_pos = 

  Signal with properties:

               ID: 49573
            RunID: 49576
             Name: 'x_vec_no_airdrag:1(1)'
            Units: ''
         DataType: 'double'
       Complexity: "real"
    ComplexFormat: "real-imaginary"
       SampleTime: 'Continuous'
            Model: 'Flugbahn_Ideal_Harness'
        BlockPath: 'Flugbahn_Ideal_Harness/x_vec_no_airdrag'
    FullBlockPath: 'Flugbahn_Ideal_Harness/x_vec_no_airdrag'
        PortIndex: 1
       Dimensions: 2
          Channel: 1
          Checked: 0
        LineColor: [0.7180 0.2750 1]
       LineDashed: '-'
     InterpMethod: 'linear'
           AbsTol: 0
           RelTol: 0
          TimeTol: 0
       SyncMethod: 'union'
           Values: [1×1 timeseries]
       RootSource: ''
       TimeSource: ''
       DataSource: ''


ans =

     []
     
ans =

     []

Using the get Function for this purpose is explained here: https://de.mathworks.com/help/sltest/ug/define-custom-criteria-for-test-case-results.html

However, the values returned by sltest_simout.get() are empty even though I am referring to them with their correct name. What am I doing wrong?

Answer 1

[Shishir Dwivedi]

Hello Danish,

You might need to log the signal of interest to get the desired output. With prerequisite that "Signal logging" is on the model (Configuration parameters) and have provided some name to Signal logging variable (say, logsout).

log the signal "x_vec_no_airdrag" & use following command. This would give you test results in "Simulink.SimulationData.Signal" associated with "x_vec_no_airdrag"

outobj = TestResult.getOutputRuns;

x_pos = outobj.getSignalByIndex(1);

sigD = sltest_simout.get('logsout').get(x_pos.Name)

-Shishir.

[Lorenzo Zustovich]

Hi, I am interested in this topic.

Following what @Shishir Dwivedi suggested, how can the siganl be plot in the "Custom Criteria" pane in the Test Manager?

I used the following sintax, but does not work:

outobj = TestResult.getOutputRuns;

x_pos = outobj.getSignalByIndex(1);

sigD = sltest_simout.get('logsout').get(x_pos.Name);

% Plot WD feed cmd

plot(sigD);

grid on;

Best regards