Simulink quesstion with using fnc block

Hi I'm pretty new to using simulink and have a quick question about the fcn block. If I wanted to input an equation such as

Vs= Vp./((Zw./(N*ZL))+N)

, would all the variables be replaced with u instead?

Answer 1

[madhan ravi]

function Vs = fcn(Vp,Zw,N,Zl)

[Light]

I was talking about simulink and not within matlab script.

[madhan ravi]

So was I, double click function block see what happens, you were the one who used function block (what’s the need to use it then??).

[Light]

I'm trying to copy a model for a transformer and was told to use the fcn block to insert an equation. I am not sure how to insert the equation. I am confused by your question and response.

https://www.mathworks.com/help/simulink/slref/fcn.html

[madhan ravi]

I suggest you to use https://in.mathworks.com/help/simulink/ug/creating-an-example-model-that-uses-a-matlab-function-block.html if Vs is a vector.

Read the last paragraph in the description: https://in.mathworks.com/help/simulink/slref/fcn.html#f7-889922

[Light]

Right so that leads back to my original question? How is the equation inserted in the block. Are my variables just replaced by u? I Attached the diagram below for reference.

I Attached the diagram above for reference.

[madhan ravi]

Exactly, see a simple example below:

In the picture above

5 => u(1)

1 => u(2)

2 => u(3)

black rectangle is the Mux block.

[Light]

Okay, that was all I wanted to make sure, thanks.