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Scilab Help >> Elementary Functions > Signal processing > trfmod

trfmod

poles and zeros display

Syntax

[hm]=trfmod(h [,job])

Description

To visualize the pole-zero structure of a SISO transfer function h .

job='p'

visualization of polynomials (default)

job='f'

visualization of natural frequencies and damping

Interactive simplification of h. trfmod opens a dialog window.

Examples

// with a transfer function 
s=poly(0,'s');
gs=syslin('c',1/(s+1));
trfmod(gs)

// with a state-space matrix
A=diag([1,2,3]);
B=[1;1;1];
C=[2,2,2];
sys=syslin('c',A,B,C);
trfmod(sys)

See Also

  • poly — polynomial definition
  • simp — rational simplification

Comments

Author : Ariel Waremstein posted the 14/02/2014 10:02
I want to use trfmod to get the denominator of tf.
I need it as a part of automatic process, so I need it without the dialog box.

How can I do it? Is there alternative command?

Thanks!
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Author : Ariel Waremstein posted the 14/02/2014 11:29
I want to use trfmod to get the denominator of tf.
I need it as a part of automatic process, so I need it without the dialog box.

How can I do it? Is there alternative command?

Thanks!
Reply to this comment
Please login to comment this page


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