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Fix Java dialog
author
Daniele Nicolodi <nicolodi@science.unitn.it>
date
Tue, 06 Dec 2011 19:07:27 +0100 (2011-12-06)
parents
f0afece42f48
children
line source
+ −
+ − <p>
+ − Poles and zeros are treated the same with regards creation, so we will look here at poles only. The
+ − meaning of a pole and a zero only becomes important when creating a pole/zero model.
+ − </p>
+ − <p>
+ − Poles are specified by in the LTPDA Toolbox by a frequency, <i>f</i>, and (optionally) a quality
+ − factor, <i>Q</i>, or by a complex number.
+ − </p>
+ − <p>
+ − The following code fragment creates a real pole at 1Hz:
+ − </p>
+ − <div class="fragment"><pre>
+ − >> pz(1)
+ − ------ pz/1 -------
+ − f: 1
+ − q: NaN
+ − ri: -6.28318530717959
+ − version: $Id: pzmodel_pz_content.html,v 1.3 2009/02/18 12:15:16 hewitson Exp $
+ − -------------------
+ − </pre></div>
+ − <p>
+ − To create a complex pole, you can specify a quality factor. For example,
+ − </p>
+ − <div class="fragment"><pre>
+ − >> pz(1,4)
+ − ------ pz/1 -------
+ − f: 1
+ − q: 4
+ − ri: [0.785398163397448+i*6.23390466154956;0.785398163397448-i*6.23390466154956]
+ − version: $Id: pzmodel_pz_content.html,v 1.3 2009/02/18 12:15:16 hewitson Exp $
+ − -------------------
+ − </pre></div>
+ − <p>
+ − This creates a complex pole at 1Hz with a <i>Q</i> of 4. You can also see that the complex representation
+ − is also shown, but only one part of the conjugate pair.
+ − </p>