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Steering on robots

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George

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Jan 27, 2001, 9:46:36 AM1/27/01
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OK I'm building my second robot wars robot (the first one Undercut didn't
make it through the qualifiers). The main problem with Undercut was it was
very very hard to control even with lots of practise. So for the next robot
I was thinking of instead of using independant drive on each side having a
steering system (like on go-carts).

However I don't think there are many robots at all which use this system and
was wondering why? It must be much easier to get controlable.

Any insight Much Appreciated

George


DDvdbewley

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Jan 27, 2001, 9:59:51 AM1/27/01
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Problem with using car type steering is the turning circle. It will be easier
to control, but slower to react.
Try building in a gyro to the drive system. I have seen these on a few bots.

tomb...@muskegon.com

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Jan 28, 2001, 3:18:57 AM1/28/01
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In article <20010127095951...@ng-fp1.aol.com>,

One thing you may want to try is track type steering. The way tanks
and other caterpillar tracked vehicles steer is by either halting the
motors on one side and driving the others forward or back or running one
set of tracks in forward and the other in reverse. The great benefit of
this is that you have the ability to turn within your body shadow and do
it FAST! If you are running a vehicle with all wheel drive this might be
the way to go.

Tom Bryant


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George

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Jan 28, 2001, 4:11:24 PM1/28/01
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On my first robot I had 6 wheels all driven with tank-style steering.
However the damn thing would never go in a straight line. I could have a
gyro or speed sensors to stabilise the speed but I know bugger all about
electronics and so can't do anything fancy like that unless there are some
nice easy kits out there or something.

Anyway maybe I'll try

Thanks

George


Greg Middleton

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Jan 28, 2001, 6:27:19 PM1/28/01
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Go to any half decent model shop and ask for a helicopter giro, they
just plug in between the receiver and servo, or mixer in the case of
tank steering.

Greg

Dr E

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Feb 5, 2001, 6:18:08 PM2/5/01
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I fly RC airplanes and some of my and 'our' transmitters are quite mad. I
can mix one channel to another with a gain or loss ie to take into account a
variance in required input. Go further and you add exponential then add 5 or
seven point mixing to accurately follow a required input path.

Dr E
Greg Middleton <gr...@NOSPAM-voyager10.demon.co.uk> wrote in message
news:3A74AAD7...@NOSPAM-voyager10.demon.co.uk...

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