Subject:
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Re: Walkers
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 16 Feb 2001 04:26:51 GMT
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Original-From:
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Steve Baker <sjbaker1@[nomorespam]airmail.net>
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Reply-To:
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sjbaker1@airmail/avoidspam/.net
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Viewed:
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836 times
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Pete Sevcik wrote:
>
> Has anyone considered adapting one of the tiny gyros used to stabalize remote
> control helicoptors ?
> These work by modifying the pulse stream that controls a standard R/C servo.
That's an interesting suggestion.
One should point out (for those who have not played with these devices) that
the Gyro itself doesn't mechanically stabilise the helicopter. The Gyro is hooked
up to some kind of a rotation sensor that detects the motion of the gyro relative
to the model and sends appropriate corrective signals to the tail rotor pitch servo
to stop the helicopter from spinning.
That's different from the previous gyro idea which was (I think) to have the
gyro physically stabilise the robot.
In a sense, the helicopter gyro is just a better alternative to the
pendulum+sensor in the original design idea. It's better because it
senses pure rotation - without being affected *too* much by the
accelleration of the vehicle.
Those devices are only intended to keep a hovering helicopter pointing
on the same heading - they don't stabilise roll or pitch or prevent
translational movement.
I suppose an equivelent Lego solution that would work similarly would be
to hang a motor with a nice heavy wheel on the end of the pendulum to stabilise
*it* - with the pendulum position sensor still being used to read out
the tilt of the robot.
--
Steve Baker HomeEmail: <sjbaker1@airmail.net>
WorkEmail: <sjbaker@link.com>
HomePage : http://web2.airmail.net/sjbaker1
Projects : http://plib.sourceforge.net
http://tuxaqfh.sourceforge.net
http://tuxkart.sourceforge.net
http://prettypoly.sourceforge.net
http://freeglut.sourceforge.net
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Message is in Reply To:
 | | Re: Walkers
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| Has anyone considered adapting one of the tiny gyros used to stabalize remote control helicoptors ? These work by modifying the pulse stream that controls a standard R/C servo. - pete. (...) -- Pete Sevcik sevcik@flash.net Techno-stuff Robotics (...) (23 years ago, 15-Feb-01, to lugnet.robotics)
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