Subject:
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Re: Ideal Tank Platform Was: adder-subtractor ????
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 23 Jan 2001 03:53:11 GMT
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Original-From:
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Chris 'Xenon' Hanson <XENON@nomorespam3DNATURE.COM>
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Reply-To:
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xenon@%avoidspam%3dnature.com
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Viewed:
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650 times
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Steve Baker wrote:
> Chris 'Xenon' Hanson wrote:
> > Both motors should be driven in 'forward' direction so if one
> > had a matched set of motors, you could perhaps achieve lateral
> > speed balance.
> Well, if you read my *long* post from a week or so ago, you'll know
> that motor mismatch makes up at least 11% of performance, motor
> direction perhaps 1% or at most 2%, and HOW YOU BUILD YOUR MODEL
> accounts for at least 7% ... even when you are being careful not
> to trap axles.
> Compared to those things, motor direction is almost irrelevent - and
> certainly not worth much extra complexity.
Yeah, I saw that. nice work, that. I figured I'd throw
it in anyway on the principle that eliminating error of any
source is always a noble cause. I like to use worm drives to
'turn the corner' anyway to get the extra torque so it's not
a design problem for me.
If one we using the adder-subtractor drive that started this
thread, it'd all be irrelevant anyway.
Chris - Xenon
--
Chris Hanson | Xenon@3DNature.com | I've got friends in low latitudes!
Learn about the new WCS Version 5! http://www.3DNature.com
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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Message has 1 Reply:
 | | Re: Ideal Tank Platform Was: adder-subtractor ????
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| (...) I guess - but surely - having an asymmetry in the robot's construction is more likely to cause it not to drive straight than the 1% to 2% due to the motor rotation direction. You may be a 'better' builder than I am - and perhaps be able to (...) (24 years ago, 23-Jan-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Ideal Tank Platform Was: adder-subtractor ????
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| (...) Well, if you read my *long* post from a week or so ago, you'll know that motor mismatch makes up at least 11% of performance, motor direction perhaps 1% or at most 2%, and HOW YOU BUILD YOUR MODEL accounts for at least 7% ... even when you are (...) (24 years ago, 23-Jan-01, to lugnet.robotics)
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