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Selim
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how to get simulink model outputs simultaneously(when the simulation is running)?

Asked by Selim
on 1 Apr 2015
Latest activity Answered by Jishnu Mukherjee on 24 Sep 2018
I have a simulink model that have the outputs x and y. When i run the simulation they give me 500x1 double values. x values are reference values and y values are the outputs that i want to converge them to x. I used genetic algoirthm to optimize output y. There are 5 parameters to optimize outputs y. I want to get x and y values to calculate error(MSE, MAPE , ITAE vs.) for cost function of genetic algorithm. Is there any method to get these output values from simulink to .m file(genetic algorithm runninng in this file) when simulation is running . From .m file to simulink i can adjust the 5 parameters simultaneously by 'set_params' but i can not find for the exact opposite situation.

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4 Answers

回答者: Selim
2015 年 4 月 1 日
 採用された回答

I solved the problem. I used to matfile from the sinks library and created the subsystem for this block. Then i masked the subsystem as parameter -- Inherit: Same as output Parameter name must be the same with output name . In my genetic algorithm .m file i used
y = get_param('my_model/y','y') %y is also subsystem name
it works. After running the simulation i get the y values each iteration to send ga .m file for optimization.

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回答者: Dishant Arora
2015 年 4 月 1 日

You can bring or save simulation results to your workspace by making use of following blocks.
1.) to workspace form the sinks library
2.) to matffile from the sinks library
You can also make use out1(outport) block

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Ilham Hardy
2015 年 4 月 1 日
It doesn't meet the requirement : when simulation is running
Selim
2015 年 4 月 1 日
i tried to use to workspace block, but when i run the simulation i get 'undefined function or variable y' error. i will try to matfile, if it works i'll write about it. Many thanks.

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回答者: Ilham Hardy
2015 年 4 月 1 日

To meet the requirement, you might want to integrate your GA mfile to simulink (e.g. using Matlab Function block).

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回答者: Jishnu Mukherjee 2018 年 9 月 24 日

you can try and use matlab function block and log the output of the block and check the result in simulink data inspector while simulation is running

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