MATLAB: How can you import a constant (1×1) matrix into Simulink, from Matlab workspace

importing constants

For a heat transfer model, I am using several constants in multiple places.

I want to be able to create those constants in matlab, import and use them in simulink and then if I change the value of a constant in matlab, it changes it throughout the model.

Ex: mass flow rate: mdot = 25… it is used in about 5 places. If I change it to mdot = 15, it changes in all the mdot constant blocks in the model.

Thanks ahead of time! Laurie

Best Answer

Have you tried a constant block from Simulink/Sources?

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MATLAB: Classdef get methods: allowing get indexing into an array of length either (1×1) or (Nx1).

You would need to overload subsref, e.g.,

methods
 function out=subsref(obj,S)
   if S(1).type=="." && S(1).subs{1}=="A" && numel(S)>1 
       
       out=obj.A(min(S(2).subs{1},1));
   else
       error 'Undefined Indexing'
   
   end
  end
end

MATLAB: How to replace a Constant block with a From Workspace block programatically

Try this... e.g. Model is open, block is named as 'Constant'...

   replace_block(bdroot,'Name','Constant', 'built-in/FromWorkspace')

Best Answer

Related Solutions

MATLAB: Classdef get methods: allowing get indexing into an array of length either (1×1) or (Nx1).

MATLAB: How to replace a Constant block with a From Workspace block programatically

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