Simulink transfer function with sinusoidal parameter

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Hi
I need to design a transfer function in the following form: K/ (Ts + 1) where the numerator K is scalar and varies sinusoidal
I tried adding and event listener on the start callback
iev = add_exec_event_listener('main\le_block','PostOutputs', @vary_me)
the vary_me function looks like:
function vary_me
a=evaluatevars('tout');
a=a(end);
a=sin(a);
set_param('main/le_block','Numerator',num2str ( sin(a) ) );
I noticed the following error
Warning: Error occurred while evaluating listener callback.
Error using vary_me
Too many input arguments.
How should I solve this issue? Is there any easier way to implement the same behavior (sinusoidal-varying numerator of transfer function) ?
Thanks for any reply

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 11 Nov 2012
Edited: Azzi Abdelmalek on 11 Nov 2012
You can multiply your transfer function by sin(t)

More Answers (1)

River Rock
River Rock on 11 Nov 2012
Your answer does solve the initial problem.
Now how about modifying the parameters of the denominator?
  3 Comments
River Rock
River Rock on 12 Nov 2012
Edited: River Rock on 12 Nov 2012
Very well then, I will create a new topic.

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