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hall sensors

Posted 2010年6月30日 GMT-4 16:05 Version 4.2a 7 Replies

Mehdi Shafiei
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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
7 Replies Last Post 2012年7月9日 GMT-4 10:44
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Hello Mehdi Shafiei

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Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2010年9月8日 GMT-4 01:05
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
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
aboozar ghafari
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Posted: 1 decade ago 2010年9月9日 GMT-4 05:41
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?
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?

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Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2010年9月11日 GMT-4 08:22
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
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
Richa Kumari
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Posted: 1 decade ago 2011年5月15日 GMT-4 15:33
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.
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.
Hadi Hei
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Posted: 1 decade ago 2012年7月2日 GMT-4 08:30
Hi,
i working with COMSOL 4.2a and i have problem to opening some examples about Hall effect...
would you please send me some example of Hall effect!
Hi, i working with COMSOL 4.2a and i have problem to opening some examples about Hall effect... would you please send me some example of Hall effect!
aboozar ghafari
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Posted: 1 decade ago 2012年7月5日 GMT-4 13:35
mohandes jan, naunetam chizi ziadi tu pc peyda konam, 1 sale ke dige ba comsol kar nemikonam, man ba 3.5 kar mikardam, emailet ro bede ye chan ta chiz yaftam, nemidunam chie, khodet negah kon...
mohandes jan, naunetam chizi ziadi tu pc peyda konam, 1 sale ke dige ba comsol kar nemikonam, man ba 3.5 kar mikardam, emailet ro bede ye chan ta chiz yaftam, nemidunam chie, khodet negah kon...
Hadi Hei
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Posted: 1 decade ago 2012年7月9日 GMT-4 10:44
Salam,
kheili lotf mikonid, emaile man: hadi.heidari@unipv.it
ghorbanat,
Hadi
Salam, kheili lotf mikonid, emaile man: hadi.heidari@unipv.it ghorbanat, Hadi

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