get_param(confgset, 'SampleTime') does not return any value...

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Mato
Mato 2024-3-8
编辑： Mato 2024-3-9
I'm trying to get the value of SampleTime parameter in ConfigSet in my Simulink model.
I set a certain value in seconds in Fixed Sample Time in Solver Detail group of Configuration window,
and then tried to read it in matlab console, such as followings;
>> conf = getActiveConfigSet('MyModel');
>> get_param (conf, 'StartTime')
ans = '0.0'
>> get_param (conf, 'StopTime')
ans = 'inf'
>> get_param (conf, 'SampleTime')
Property 'SampleTime' does not exist.
My question is why get_parameter 'SampleTime' does not work while earlier two, 'StartTime' and 'StopTime', works ok.
Any suggestion related to SampleTime parameter in ConfigSet would be appreciated.
Besides, I don't have Simulink Real-Time package license so that I can't use slrealtime target.

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采纳的回答

Fangjun Jiang
Fangjun Jiang 2024-3-8
Your lucky guess stopped at three.
It is not called 'SampleTime'. You are probably looking for 'MaxStep'.
https://www.mathworks.com/help/simulink/gui/solver-pane.html
Follow this link or open the help document of the model configuration parameter page to find the parameter name under "Programmatic Use"
  1 个评论
Mato
Mato 2024-3-9
编辑：Mato 2024-3-9
Well, I might missed explaining the type of solver is Fixed Type.
As I typed in get_param(.., 'MaxStep') in MATLB console, I got an error.
I used 'FixedStep' instead, then I got correct answer.
Thanks a lot for your advice !!
>> conf = getActiveConfigSet('MyModel');
>> get_param (conf, 'MaxStep')
When 'SolverType' is fixed-step, parameter 'MaxStep' is ignored.
>> get_param (conf, 'FixedStep')
ans = 0.02

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