Subject:
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Re: Motor power?
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 17 Feb 1999 22:04:33 GMT
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Original-From:
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B van Dam <bvandam@westbrabant./AvoidSpam/net>
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Viewed:
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1071 times
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The same applies for the Cybermaster, the differences in speed quite large
too.
CU Bert
Visit my site on Lego, Robot's and Visual Basic at
http://home.concepts.nl/~bvandam/index.html
-----Oorspronkelijk bericht-----
Van: John A. Donaldson <jdonaldson@ghg.net>
Aan: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Datum: woensdag 17 februari 1999 4:58
Onderwerp: Re: Motor power?
> I have a tracked bot and I can notice the difference in speed when I set • the
> motors to 1 or 4 or 8.
>
> John A. Donaldson
>
> Dave Baum wrote:
>
> > The firmware does do PWM. One reason you aren't seeing much difference • is
> > that the motor has an internal flywheel. When the pulse is "on", the
> > motor revs up to speed, then this speed is maintained by the flywheel
> > during the "off" pulse. If you put a bigger load on the motor (i.e. have
> > it move something heavy), you'll start to notice some difference in the
> > power settings. It still isn't great, but at least there is some
> > difference.
> >
> > Dave
> >
> > In article <36CA1856.CCCDC250@seanet.com>, Dan McCabe <danm@seanet.com> • wrote:
> >
> > > When I set the motor power (both in RIS and nqc), I expected the speed
> > > of the motor to be proportional to the power setting (i.e., higher power
> > > setting makes motor turn faster and vice versa). However, what I see is
> > > that the power setting appears to have no impact on motor speed.
> > >
> > > Am I doing something wrong? Or is it just that I can't get there from
> > > here? Any insights would be appreciated. (Yeah, I could do the PWM thing
> > > in RCX code, but I hoped that the firmware did that sort of thing for
> > > you; it would be faster and more efficient in firmware).
> > >
> > > TIA
> > >
> > > Cheers,
> > > danm
> >
> > --
> > reply to: dbaum at enteract dot com
> > --
> > Did you check the web site first?: http://www.crynwr.com/lego-robotics
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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