Subject:
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Re: motors
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 10 Jul 1999 14:12:40 GMT
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Original-From:
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Pavel Petrovic <petrovic@ifi[antispam].ntnu.no>
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Viewed:
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730 times
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Hi,
I found that one of my Mindstorms motors is a bit stronger
than the other. The robot should go forward, but slightly
diverts right. When I exchange the motors and nothing else,
it diverts to the left. Does anybody else have similar
experiece? What is a normal lifetime for these motors?
Pavel.
--
Pavel Petrovic, ppetrovic@acm.org (petrovic@ifi.ntnu.no)
http://www.ifi.ntnu.no/~petrovic/
phd student IDI NTNU Trondheim Norway, tel. +47-7359 1717.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 3 Replies:
 | | Re: motors
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| (...) Unfortunately, almost all of the motors are slightly uneven. Look up "adder/subtracter" or go back through the list to find mechanical solutions which allow your robot to go in a straight line regardless. The archives are at (...) (25 years ago, 12-Jul-99, to lugnet.robotics)
| | | Re: motors
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| (...) Out of the 6 motors that I own none of them rotate at the same speed. (URL) has some mechanical solutions (using an adder/subtractor) for solving this problem. Note that for many types of robots (line followers, etc) it really isn't a problem, (...) (25 years ago, 12-Jul-99, to lugnet.robotics)
| | | Re: motors
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| (...) That's just how mechanical parts are - all parts are slightly different. I've used a differential between the two motors, and then measured the position difference with a rotation sensor. In NQC I just make one of the two motors "float" when (...) (25 years ago, 18-Jul-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Have 4 motors, need help!
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| This is an excerpt from an "almost" real-life experience: Lalala, look mom! My robot has four motors! Two on each side to power the tank treads. Is this cool or what!? *All of a sudden, the robot makes a strange noise, emmits some smoke, and stops* (...) (25 years ago, 10-Jul-99, to lugnet.robotics)
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