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Re: speed issues
Quote:
Originally Posted by cjl2625
Earlier in the season, we built a really rough prototype shooter, and it was going on and off when we tried running it at full speed. I checked the current readings on the CIM, and they were upwards of 50 amps when running at constant speed. The assembly was put together rather poorly, and it put a lot of strain on the motor, leading to these crazy high currents. I think the cylcling problem was something on the roborio periodically cutting power to the motor to prevent the high current.
Maybe you're facing a different issue, but perhaps you could try checking the current readings from the PDP, or remove the motor from the shooter and see if the speed still fluctuates.
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Good points. Also you should consider if your shooter wheels are spoked wheels then they may be acting as a fan and that moving air is adding to your loading and possibly triggering current limiting events.
Dr. Joe J.
__________________
Joseph M. Johnson, Ph.D., P.E.
Mentor
Team #88, TJ2
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