Subject:
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Different motor speeds?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 28 Dec 2000 15:43:34 GMT
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Original-From:
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Doc Kinne <n2ikr@arrlNOMORESPAM.net>
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Viewed:
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457 times
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Folks: 1040EST 363-2000
Now that I'm "off and running" with regard to emailing to
the list I thought I'd ask a question that's been going through my
mind.
I've build a very (VERY) simple robot that basically consists
of two medium sized wheels coupled directly to the motors so I could
begin to play around with the programing. I've noticed that one
motor seems to go ever so slightly faster than the other even with
the power setting to the motors A and C set identically. This
causes my little 'bot to go in a wide circle when it is supposed
to be going straight.
Is this a fault in one of my motors or is it a basic flaw of
design I can fix by using gears to couple the wheels to the motors or
something?
--
Richard "Doc" Kinne, BA
Food Management Services Technical Support Rep., The CBORD Group, Inc.
Candidate, M.S. (Astronomy), Swinburne University of Technology, Victoria, AUS
<http://www.dreamscape.com/phaedrus>
<mailto:n2ikr@arrl.net>
FAX: 413-460-6304
Quote: "An individuals rights are protected only as long as they don't
interfere with the State's. Nothing is so dangerous for a
society."
-Q
"Death Wish"
_Star Trek: Voyager_
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Message has 3 Replies:
 | | Re: Different motor speeds?
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| (...) So few days left in the year, eh? (...) According to what I've read, all LEGO motors spin better in one direction than another. And you're going to be hard-pressed to find two motors that spin at exactly the same speed in the same direction, (...) (24 years ago, 28-Dec-00, to lugnet.robotics)
| | | Re: Different motor speeds?
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| (...) Well, we've talked a bout this quite a lot over the past month or so - and as I'm sure others will say - you can't guarantee that all motors have identical speeds - and it's known that the motors spin slightly faster "forwards" than (...) (24 years ago, 28-Dec-00, to lugnet.robotics)
| | | Re: Different motor speeds?
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| (...) No two motors give the exact same power output. In order to overcome that you have the basic solution: you connect 1 motor to an differential, the power is divided over both wheels. A side-effect of this method, is that if one wheel has lesser (...) (24 years ago, 28-Dec-00, to lugnet.robotics)
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