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Unread 14-10-2004, 17:43
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AKA: Larry Upjohn
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Re: Some Comprehensive Theory

I noted in your PPT workup that you mention back EMF. I have tried to get this concept across to several teams that this problem means that one motor is actually reducing the power available to drive the robot since that translates to a "braking" effect on the power train. I have not measured this effect but what does it do to the drivers on the motor controllers. These devices are current sources and not current sinks unless I have my theory wrong. Anyway thanks for the great work up. I just need more time to translate this for my students. LRU







Quote:
Originally Posted by Matt Adams
Oh boy.. do I have something for you.

As part of the FIRST college course that I taught this semester, I have some rather comprehensize data on combining both the chips and drills... from a number crunching standpoint, it's very complete.

There aren't any sprocket sizes, CAD drawings, or the like.. but theory wise.. this is (fundamentally) very strong material. I will be publishing a white paper along these lines soon on www.boilerinvasion.org.

Here's the PowerPoint. If you have questions, please ask. If someone has corrections, comments, or concerns, please ask.

http://web.ics.purdue.edu/~mjadams/motorsinfirst.ppt

Matt