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How can I find implement fzero in Simulink?

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Igor Batoukhtine
Igor Batoukhtine on 29 Mar 2016
Commented: Jacopo Riccio on 30 Mar 2020 at 21:02
In Matlab I have a simple code where I use the fzero function to find a zero of a second order poly. Now I want to simulate this in Simulink, but I can't use the fzero function in Simulink (it doesn't let me assign a anonymous function in the function block).
Can someone tell me what the best wat is to use this functionality in Simulink?

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Accepted Answer

Orion
Orion on 29 Mar 2016
Hi,
You can use an Interpreted MATLAB Function block in your model.
Here, I'm solving sin(x) = 0 with an initial search value of 3.

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Jacopo Riccio
Jacopo Riccio on 30 Mar 2020 at 21:02
In case the "interpreted Matlab Fcn" block has to go insight a mask, the simulink diagnostic viewer reports an error of an undefiened function, while the same error does not show up if the block is used in a nested mask. Do you please have a solution to this issue?

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