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Using neural network in function block from Simulink

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Simon
Simon 2014-5-13
评论： michael bronnmann 2020-10-19
My Simulink workspace looks like this:
and the function contains just a few lines:
function y = mysimulinkfunction(u,v)
%#codegen
global net;
y = net([u;v]);
The object "net" is an already trained feed forward network residing in my workspace which can be successfully called from the command line via
net([1;0])
and writes the correct answer (which is 1.0).
However Simulink throws several errors when I try to run it, first:
Global declaration not resolved to a Data Store Memory block registered via the Ports and Data Manager.
and 2nd:
Could not find initial value for global variable 'net'.
Those errors sound like it is not possible to call neural networks that way, however I just want to know if there's another possibility than gensim(net) to use a NN in Simulink.

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回答（5 个）

Ryan Livingston
Ryan Livingston 2014-5-15
In the MATLAB Function Block global variables are linked to Data Store Memory blocks rather than the MATLAB workspace:
http://www.mathworks.com/help/simulink/ug/using-global-data-with-the-matlab-function-block.html#bshotv6-1
However, I don't believe that Neural Network objects are directly supported for code generation.
The simplest alternative to gensim I've seen to utilize a trained NN in the MATLAB Function Block or MATLAB Coder is genFunction:
http://www.mathworks.com/help/nnet/ref/genfunction.html
That page describes how to create a MATLAB Function Block/MATLAB Coder compliant MATLAB function via the syntax:
genFunction(___,'MatrixOnly','yes')
This will produce a MATLAB function which you should simply be able to call from inside your MATLAB Function Block to simulate the NN.
Simon Christmann
Simon Christmann 2018-1-9
编辑：Simon Christmann 2018-1-9

Here is the full solution for Zeljko Tomicevic and anyone who found this thread on Google

XIN HE
XIN HE 2019-6-5
Did you got it fixed? I got the similar proble, could you share your solution ?
michael bronnmann
michael bronnmann 2019-8-27
Hey, is there any way to use "SeriesNetwork" in Simulink?
Asma A Bder Muhmed
Asma A Bder Muhmed 2020-5-19
How I can put these numeres in equation?

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