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Topic: inverting a transfer function in simulink
Replies: 3   Last Post: Sep 12, 2012 11:59 AM

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mehmet tk

Posts: 23
Registered: 8/8/07
inverting a transfer function in simulink
Posted: Mar 4, 2012 2:01 PM
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Hi all,

I would like to design an inverse model controller for my linear system. I need to invert the system transfer function in simulink however it does not let me do it since the inverted tf has the numerator order greater than the denominator. How will I do it? It can do it in matlab as follows:

num = [ 1 ] ;
den = [1 2 3] ;
G = tf(num,den) ;
Ginv = inv(G) ;

Ginv = s^2+2s+3 /s ;

and it is not allowed in simulink to use this..Please help..

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