[ausev] 2 motors - serial vs. parallel

[lyle sloan]

That's IF the pwm for one side doesnt lock onto full power on and the vehicle does an uncontrolled donut.  IMO it would be better and safer for both motors to share one controller should such an instant arise. 


--- On Sat, 5/31/08, m. edmund howse <bytedawg at bytetamer.com> wrote:

> From: m. edmund howse <bytedawg at bytetamer.com>
> Subject: Re: [ausev] 2 motors - serial vs. parallel
> To: slodown27 at yahoo.com, "AustinEV News Announcements and General Discussion" <ausev at austinev.org>
> Date: Saturday, May 31, 2008, 10:11 AM
> I don't think this would be any problem if a pwm
> controller with proper 
> feedback was used.
> 
> marv
> 
> lyle sloan wrote:
> > Thats a very interesting idea with the motors in
> series.
> >
> > I guess when turning left or right you could decide
> which motor will be first in the serial, but how would you
> control the torque/amps per motor?  Variable caps in
> parallel to each motor?  A chopper in series to each motor?
>  
> >
> > Sounds easier to maintain the wheel motors in parallel
> and do the sensing and control per motor via a variable
> resistor.
> >
> >
> > --- On Fri, 5/30/08, evehicle4me at hischopsticks.org
> <evehicle4me at hischopsticks.org> wrote:
> >
> >   
> >> From: evehicle4me at hischopsticks.org
> <evehicle4me at hischopsticks.org>
> >> Subject: Re: [ausev] 2 motors - serial vs.
> parallel
> >> To: ausev at austinev.org
> >> Date: Friday, May 30, 2008, 7:34 PM
> >> "For wheel motors, you'd hope
> >> manufacturers would provide independent
> controllers for
> >> each of the
> >> independent motors.  Then both wheels could have
> (via
> >> software
> >> control of the motors) popular handling features
> like ABS,
> >> skid
> >> prevention, automatic tire pressure detection* and
> the
> >> like.  There
> >> are a lot of creative solutions in between, but
> the
> >> differential is
> >> the gadget that most cars use."
> >>
> >> Yes, that is what I am trying to do research on! 
> That is
> >> what I am  
> >> calling an "electronic differential". 
> >> Independent controllers for  
> >> wheel motors is no problem - it's the next
> step that I
> >> am trying to  
> >> track down!  Any help?????
> >>
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> >>     
> >
> >
> >       
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