Subject:
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Position Finding/Mapping
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 1 Oct 1999 20:46:09 GMT
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Original-From:
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Andy Gombos <gombos@ne.infi.*antispam*net>
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Reply-To:
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Viewed:
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456 times
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If you take a syncro drive robot that can move perfecly in 4
directions(Fwd,Rev,Left,Right) and attach rotation sensors to each axle
that the wheels are on, then you can measure the distance traveled by
ecah wheel. With a litttle knowledge of how many rotations it takes to
go a foot, then you could compute the distance. The robot would then
know that it was ______ feet away in x direction, and ____ in y
direction. This could be used to map a room for obstacles to be plotted
on a PC, by using a touch sensor ring around the robot. Then you would
just datalog the current position in x,y. You could also navigate a room
by telling the robot where the objects are, and how big the are. Then
the robot could just avoid that sector of floor space. This would
probably need LgOs or whatever because you would probably get floating
point numbers for feet.
Andy
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Message has 3 Replies:
 | | Re: Position Finding/Mapping
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| (...) I assume you're talking about the type of robot platform shown here: (URL) four wheels travel the same amount regardless what direction the robot is moving. So, you won't get much from using multiple rotation sensors except to help average out (...) (25 years ago, 2-Oct-99, to lugnet.robotics)
| | | Re: Position Finding/Mapping
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| Does anyone have any ideas on which platform is best? I have to buy parts for any of the ones listed on the Internals page(I didn't think about that). Can anyone say which ones are best? Also does anyone know of any other syncro drives on the (...) (25 years ago, 2-Oct-99, to lugnet.robotics)
| | | Re: Position Finding/Mapping
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| (...) Take a lesson from NASA and never use feet for anything important. <g> Using metric also means you don't need floating point, if you do things right. Erik Walthinsen <omega@cse.ogi.edu> - Staff Programmer @ OGI Quasar project - (URL) (...) (25 years ago, 2-Oct-99, to lugnet.robotics)
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