Re: How to multiply two transfer function ?

[Doug Stewart]

Just use tf3.
Doug

Kai Shing Lee wrote:

>Thanks a lot.
>
>Further question:
>
>Do I need to re-form a transfer function ( e.g.
>tf4=tf(b3,a3) ) in order to use it for further
>manipulation ?  Or, just use the 'tf3' ?
>
>
>--- Peter Gawthrop <address@hidden> 撰寫:
>  
>
>>tf3 = sysmult (tf1,tf2); 
>>[b3,a3] = sys2tf(tf3)
>>b3 =
>>
>>  2.0000  3.0000  1.0000
>>
>>a3 =
>>
>>  1.0000  4.0000  7.0000  6.0000
>>
>>Try DEMOcontrol for more info,
>>
>>    Peter.
>>
>>From: Kai Shing Lee <address@hidden>
>>Subject: How to multiply two transfer function ?
>>Date: Wed, 18 May 2005 12:26:27 +0800 (CST)
>>
>>    
>>
>>>How can I do "tf1*tf2" in octave ?
>>>
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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
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