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Unread 05-07-2012, 10:06
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Mentor (1114), Alumni (772)
AKA: Aaron Koscielski
FRC #1114 (Simbotics)
Team Role: Mentor
 
Join Date: Jul 2010
Rookie Year: 2006
Location: LaSalle, Ontario, Canada
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Re: CIM Motor Failure

Quote:
Originally Posted by Al Skierkiewicz View Post
Aaron,
The CIMs do have a slight bias that tends to let them run in one direction a little faster than the other but there should be no significant wear based on that alone. We have killed CIMs in the past with lengthy demos and heavy use in practice. The failure exhibited above is kind of a domino effect. As the motor builds excessive heat the insulation on the windings starts to break down. When that occurs the windings start to short. This causes the current to climb while the output power falls.
Is there anything we could do to prevent our motors from heating up easily, or to cool our motors down quickly? Like installing something on the motor, or doing something different in the electrical system, or even programming?

Second thing, what is CAN? I've heard of it, but i have no idea hwat difference it makes, and why teams would choose to use it. If you send me in the right direction to find out what it is, that would be good too
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