-
Filter by Topic
Most Popular
All Topics
- List all discussions
Facebook
Twitter
Delicious
Digg
Stumbleupon
More services...hall sensors
|
Thread index | Previous thread | Next thread | Start a new discussion |
RSS feed |
Turn on email notifications |
4 Replies
Last post: May 15, 2011 7:33pm UTC
June 30, 2010 8:05pm UTC
hall sensors
hi.
I need to use hall sensors for switching BLDC model. if some one worked with hall sensors,please tell me how can i find and use hall sensors?
Thanks
Reply | Reply with Quote | Send private message | Report Abuse
September 8, 2010 5:05am UTC in response to Mehdi Shafiei
Re: hall sensors
Hi
for me a hall sensor is simply modelled by a surface over which you need to integrate the flux and define a response related to the total flux, no ?
--
Good luck
Ivar
Reply | Reply with Quote | Send private message | Report Abuse
September 9, 2010 9:41am UTC in response to Ivar Kjelberg
Re: hall sensors
Hi
thanks for your attention
I know, attached please find a model for a hall sensor. in this model we have used an anisotropic conductivity matrix to impose effect of magnetic field on the current. in the other word The magnetic field introduced into the current flow region of the solid in the Hall effect measurements effectively adds an anisotropic term into the conductivity of a nominally homogeneous, isotropic solid material. The anisotropic conductivity is caused by the magnetic field through the Lorentz force. this model is very simple and can't show me what really happen in the hall effect sensors.if i want to see accumulation of charges in this model! what should i do?
Reply | Reply with Quote | Send private message | Report Abuse
September 11, 2010 12:22pm UTC in response to aboozar ghafari
Re: hall sensors
HI
Well correct
I was in my world: had just simulated the field gradients for a system, to find out where to place the Hall sensor, while you are in the Hall sensor physics v;)
--
Good luck
Ivar
Reply | Reply with Quote | Send private message | Report Abuse
May 15, 2011 7:33pm UTC in response to Ivar Kjelberg
Re: hall sensors
sir i am working with comsol version 4. while implementing for hall effect sensor i am gettin an error sayin
Singular matrix.
- Detail:
There are 1 void equations (empty rows in matrix) for the variable mod1.mef.V0_fp1
at coordinates: (0,0), ...
and similarly for the degrees of freedom (empty columns in matrix)
.what shud i do .i m new to comsol.
Reply | Reply with Quote | Send private message | Report Abuse
Rules and guidelines
