Subject:
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Re: moving in a straight line with two motors?
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 13 Nov 1998 18:46:30 GMT
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Viewed:
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5029 times
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Op een zekere dag, te weten Fri, 13 Nov 1998 17:21:08 GMT, klom
lego-robotics@crynwr.com (Alex Wetmore) in het toetsenbord en schreef ons:
> From: John Scott Kjellman <jkjellman@ameritech.net>
> > Instead of using the differential for angle sensors, why not use it to
> > allow a single motor to drive both wheels? Then a single angle sensor
> > coupled with a motor could drive the steering mechanism. This setup
> > would be very similar to a radio controlled car.
>
>
> The main downside with this approach is that you can't turn on axis (so your
> vehicle will no longer have a turning radius of 0).
But you don't have to drive two weels. When you make one wheel for steering
(thus making a three-wheeler), you can also drive this single wheel,
allowing the vehicle for turning on it's own axis.
> When I first got the mindstorms I thought that it would be interesting to
> have a vehicle which put down a foot, lifted itself up, turned, and put
> itself back down. It would be possible to do this with two motors (either
> using one for both lifting and driving or lifting and turning), but it
> seemed like making the lifting foot work properly would be difficult
> (although it might not be too bad if you used pnuematics).
Sounds good, but the driving will be a stop-and-go movement.
Another idea: what about making a vehicle with a reptile-like movement, four
wheels, on two parts of the vehicle, where the vehicle has a bending
mechanism. And when you put a kind of light one the front, and a
light-sensor on the back, with a kind of tube in between, you can check the
amount of light to check if the machine is moving straight.....
Ardjan
-----
Ardjan's YALP (Yet Another Lego Page) at
http://unet.univie.ac.at/~a8705125/ardjan
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Message has 1 Reply:
 | | Re: moving in a straight line with two motors?
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| Ardjan Besse wrote in message <364c7d42.4532817@lu...et.com>... (...) "Straight" is a relative term. For example, while the alignment might be 0straight, the wheels might not provide the bot with the ability to travel in a straight line. I believe (...) (28 years ago, 14-Nov-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: moving in a straight line with two motors?
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| From: John Scott Kjellman <jkjellman@ameritech.net> (...) The main downside with this approach is that you can't turn on axis (so your vehicle will no longer have a turning radius of 0). When I first got the mindstorms I thought that it would be (...) (28 years ago, 13-Nov-98, to lugnet.robotics)
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