Subject:
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Re: Following a Line with a Bad Start
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 19 Jun 2002 17:17:59 GMT
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Viewed:
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700 times
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> but I
> wonder what happens when the robot is placed near or on the line and is perpendicular to the line?
> Does the robot (say, roverbot) start awkwardly following the line and finally swing around parallel
> to the line and quickly follow it?
Usually, if your robot starts perpendicular to the line, it will move like it's in a sharp turn, and then it will proceed to follow the line. (sometimes, a 90 degree turn is allowed in the course)
Generally, with this type of thing (line following) some assumptions are made in the beginning. This makes it much easier.
For example, if you DON'T assume you're starting ON the line, then the first thing your robot as to do is FIND the line. So, you need to search the area and fine where a line is before you start the 'line following' portion of your program.
Or, maybe you assume the line is in front of your robot when you start. Then, you just need to drive forward to find the line, then start your line program.
I'd guess more than 99% of the time, if you have a contest or some type of line following challenge, you assume your robot is going to start on the line, facing the correct direction.
This assumption really makes it a 'line following' challenge, and not a 'line finding' challenge.
Now, you may face other obstacles. For example, it may be a broken or dotted line. Then it could again become a 'line finding' challenge. Or the line could cross over itself. Then your robot has to decide which path to take.
More Questions?
Steve
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