Accessing Simulink Test Signals by Name

Question

Danish Belal 2019-10-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/485874-accessing-simulink-test-signals-by-name

评论： Lorenzo Zustovich 2021-1-27

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?

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Answer 1

Shishir Dwivedi 2019-12-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/485874-accessing-simulink-test-signals-by-name#answer_407870

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.