TF function on Simulink
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Hello I am trying to create a MATLAB function on simulink that ,between others, requires the use of the 'tf' function . Problem is I can't really find a way to use the output of the 'tf' function since it's an mxarray. So when I run something like this
function y = fcn(u)
I get this error: MATLAB expression 'mtimes' is not numeric. Block MATLAB Function (#36) While executing: none . Initializing g gives me the 'is not numeric' error so it won't help... So I was wondering if there is anyway to get it done - the scripting way, I know I can use transfer function simulink blocks etc...Thanks in advance. (I am using Matlab R2012b btw)
Rick Rosson el 28 de Feb. de 2014
Multiplication is not the same thing as convolution. This approach will not work. You need to write a function that performs continuous time convolution. The only way to do that is to approximate the solution by approximating the continuous integral as a discrete summation over a small sample size. It should be possible, but not easy or fun.
Why not just use the TF block provided by a Simulink? No sense reinventing the wheel.