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Unread 10-02-2004, 22:13
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Max Lobovsky Max Lobovsky is offline
Fold em oval!
FRC #1257 (Parallel Universe)
Team Role: College Student
 
Join Date: Jan 2004
Rookie Year: 2004
Location: Scotch Plains, NJ
Posts: 1,026
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using a current sensor to "brake" a motor

We are looking at different ways to hold our winch in place (ie not backdriving). In the spirit of minimizing moving parts, i thought up a scheme where a current sensor is placed in series with the motor after a victor. During testing, the current neccesary to just hold the winch in place will be measured. Then, the computer will be programmed to hold that current when the winch has no commands to move. Because the system has a good amount of friction, i think we can get enough accuracy with this system. If anyone has tried this, id like to know. And yes, i realize that the power is cut at the end of the competition......
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2005 NYC Regional - 2nd seed, Xerox Creativity Award, Autodesk Visualization Award
2005 Chesapeake Regional - Engineering Inspiration Award
2004 Chesapeake Regional - Rookie Inspiration award
2004 NJ Regional - Team Spirit Award