Subject:
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Re: Drift Correction
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 5 Dec 1999 23:06:53 GMT
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Viewed:
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703 times
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dave madden wrote:
> Perhaps you can achieve greater accuracy by running the two axles
> through a differential driven backwards (with respect to the way it's
> usually operated) and take the difference signal off the body of the
> differential. Gear that up so that a small difference in wheel
> rotation speeds turns into a large CW or CCW rotation on an axle, and
> run that axle into a single rotation sensor. Then, use the sensor
> output to determine when to adjust motor speeds. (I think this works
> in theory, but suspect that LEGO(r) gears are too sloppy to make this
> really practical.)
I used this approach once - and with success. The gears are a bit sloppy
and the rotation sensor only measures descrete angles. Anyway it worked
for me.
Jacob
--
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Message is in Reply To:
 | | Re: Drift Correction
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| =>From: Andy Gombos <gombos@ne.infi.net> =>... =>Does anyone know how to do drift correction? I have tried 4 different =>ways, but they all don't work. Is it a difference in wheel =>circumference? Or is it something with the programming? I drive (...) (25 years ago, 3-Dec-99, to lugnet.robotics)
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