Subject:
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Adder/subtractor mod
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 3 May 2001 15:31:47 GMT
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Viewed:
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639 times
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Does anyone know if there is a way to use the adder/subtractor in such a way
that tank/treaded vehicle moves forward at the sum of the two motor speeds
(A+B) and can still rotate (in place) left and right and move backwards.
My understanding of the adder/subtactor is that tank forward direction is
still obtained by using one motor turning both axles at the same speed
(drift problem solved). I need the sum (of both motors) turning both axles
at the same speed while still having all other movement functions (backward,
turn-in-place-left, turn-in-place-right).
I'm looking to use Brian Long's wormgear mod to adder/subtractor at the
bottom of Denis Cousineau page
(http://prelude.psy.umontreal.ca/~cousined/lego/1-Varia/adder/adder.html) to
develop a powerful transmission with some speed to power a treaded vehicle.
I just don't know how to build the transmission around the adder/subtractor
to make this happen.
Any help would be appreciated.
Clayton
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Message has 2 Replies:
 | | Re: Adder/subtractor mod
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| (...) Clayton, I recently built a tracked vehicle with a motor driving each set of tracks via a worm and wheel. The 'other' end of the drive shaft for each side inputs to a differential. With both tracks going in the same direction the differential (...) (24 years ago, 4-May-01, to lugnet.robotics)
| | | Re: Adder/subtractor mod
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| (...) What about doubling the input speed of A and driving A with two motors? You should get twice the speed of a standard adder/subtractor without sacrificing power. -- ---...--- $50,000 for Jill Behrman (URL) (24 years ago, 5-May-01, to lugnet.robotics)
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