CIM Motor Failure

[Richard Wallace]

Originally Posted by akoscielski3

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

You'll get faster results by posting this one in a separate thread.

Several really good programming and control specialists haunt CD, but a thread titled "motor failure" might not attract their notice soon.

CAN is an acronym for "controller area network". In an FRC control system with Jaguars, it is a two-way communication channel that enables both commands to and feedback from the motor controllers.

[akoscielski3]

Originally Posted by Richard

You'll get faster results by posting this one in a separate thread.

Several really good programming and control specialists haunt CD, but a thread titled "motor failure" might not attract their notice soon.

CAN is an acronym for "controller area network". In an FRC control system with Jaguars, it is a two-way communication channel that enables both commands to and feedback from the motor controllers.

Okay thanks. Ill probably find something if i just search it

[Ether]

Originally Posted by akoscielski3

Okay thanks. Ill probably find something if i just search it

http://www.chiefdelphi.com/media/papers/2433 :

A tutorial on the hardware (electronics) aspect of CAN wiring using the black jaguar out of the 2011 (and later) KOP. Made from the experiences of a veteran wiring student who had no previous knowledge of CAN bus and had to ask a lot of questions and do some experimenting to make CAN work while keeping to a tight budget. Includes previously undocumented (as far as I know of) methods and quick tricks.

This has been updated several times since it was posted in January. It might be a good place to start since it was written by a student in the same situation as you (no prior knowledge of CAN).

(Be sure to read the thread as well as the papers)

[Dale]

While it doesn't usually seem to be a problem during competition since motors have time to cool, one thing we might try is adding a display to the driver's station that shows the motor temperature. That would be handy for practice and demos. Has anyone done this and if so what sensor did you use?

[Jim Wilks]

Originally Posted by Dale

While it doesn't usually seem to be a problem during competition since motors have time to cool, one thing we might try is adding a display to the driver's station that shows the motor temperature. That would be handy for practice and demos. Has anyone done this and if so what sensor did you use?

We did monitor motor case temperature using this simple and inexpensive sensor:

http://www.analog.com/en/mems-sensor...s/product.html

We wired it via a resistor to the Analog card on the CRIO.

[akoscielski3]

Originally Posted by Ether

http://www.chiefdelphi.com/media/papers/2433 :



This has been updated several times since it was posted in January. It might be a good place to start since it was written by a student in the same situation as you (no prior knowledge of CAN).

(Be sure to read the thread as well as the papers)

Perfect! Thanks ill read it when i get home later.


Dale, you would be surprised at how hot motors get at conpetitions. Mostly during elims but i know my team had that problem last year. I am almost positive at FiM champs 67 was cooling down there robot with fans. Kinda ironic if you ask me