MATLAB: Use Maltab Classes inside simulink

classesMATLABsimulink

I want to use instances of Matlab Classes in a sumulink-model (inside a Matlab-Function). The only thing I found is this: http://www.mathworks.de/de/help/simulink/ug/simulink-data-class-extension-using-matlab-class-syntax.html But I don't know if this is what I'm looking for and also I can't get it running. (How can I add the Simulink.Parameter Class to the Matlab Search path?)

What I eventually want to do, is to implement a decisiontree, that gets certain values from my simulink model and decides, based on those, what to do next.

Best Answer

The Simulink.Parameter class is already on the MATLAB path (it is added at the time of Simulink installation).

Assuming that you meant that you want to use a custom MATLAB class as part of a Simulink block, you may want to consider one of the available MATLAB Function blocks or MATLAB S-functions. I think either the Interpreted MATLAB Function block or the MATLAB S-function block would be most appropriate for you.

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MATLAB: Can I put an anonymous function into a Simulink block

If your use case is to create S-function, then refer to the following link which discusses the detailed steps to create a Level 2 MATLAB S-function. https://www.mathworks.com/help/simulink/sfg/writing-level-2-matlab-s-functions.html#brgtux6

You can create an S-function block, as shown in the example, add it in your model and provide a signal representing x as an input to this block.

If you do not intend to change the structure represented by M, then you can use a persistent variable and directly use it inside an S-function. There is no need to pass M as a parameter in that case because you will always have access to M inside the function. For information regarding persistent variables refer to the following link. https://www.mathworks.com/help/matlab/ref/persistent.html Additionally, it is not clear why would you use Anonymous functions inside a MATLAB function block. The use case which you are discussing can be definitely achievable using a Level-2 MATLAB S-function.

MATLAB: Creating variable In Maltab

Not sure what you mean by empty, but if you mean all zeros, try this:

cp = zeros(mx_row, mx_col);

If you don't want zeros and truly want empty, then it's a contradiction if you want to use numerical arrays - you'd have to use a cell array like Azzi showed. But cell array's are complicated, especially for beginners, so if you want to use them, see the FAQ

Best Answer

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