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[mathcad] Angles larger than 180
| [mathcad] Angles larger than 180 |
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Author: Esteban Sanchis
Posted: Wed, 29 Jul 2009 19:21:26 +0200
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Hi everyone
I am trying to plot a Bode diagram, but want to see angles larger than
180º (pi/2). Funtions ARG or ATAN2 "jump" when they arraive at 180º.
Placing some minus signs helps but only for the first jump and not for
the follwoing.
Any suggestion?
Thank you everybody.
Esteban
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| RE: [mathcad] Angles larger than 180 |
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Author: Sven Lindhardt
Posted: Thu, 30 Jul 2009 08:58:40 +0200
|
This problem can only be totally avoided if you add the individual phases
from each factor in the Bode expression. If you use the Bode plots in
connection with control systems then you might find the enclosed program
useful.
-----Original Message-----
From: Esteban Sanchis
Sent: 29. juli 2009 19:21
To: />
Subject: [mathcad] Angles larger than 180
Hi everyone
I am trying to plot a Bode diagram, but want to see angles larger than 180º
(pi/2). Funtions ARG or ATAN2 "jump" when they arraive at 180º.
Placing some minus signs helps but only for the first jump and not for the
follwoing.
Any suggestion?
Thank you everybody.
Esteban
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Attachments:
BedeOnly.mcd
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| RE: [mathcad] Angles larger than 180 |
|
Author: Philip Oakley
Posted: Wed, 29 Jul 2009 19:53:46 +0100
|
use the 'angle' function. It specifically uses 0-360 deg.
-----Original Message-----
From: Esteban Sanchis />
Sent: 29 July 2009 6:21 PM
To: />
Subject: [mathcad] Angles larger than 180
Hi everyone
I am trying to plot a Bode diagram, but want to see angles larger than
180º (pi/2). Funtions ARG or ATAN2 "jump" when they arraive at 180º.
Placing some minus signs helps but only for the first jump and not for
the follwoing.
Any suggestion?
Thank you everybody.
Esteban
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