Let me try answer some of these..
Quote:
Originally Posted by Ether
with the 7:1 speed reduction and the 550's free speed of 19300 rpm, the top speed of your wheel would be somewhere around 2700 rpm (neglecting gear losses). What was your operating speed for shooting?
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Let me check if we did an accurate measurement or not.
Quote:
Originally Posted by Ether
what kind of speed control algorithm did you use? e.g. PID, bang-bang, voltage compensated open-loop, etc
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If I remember right, for the first shooter it was a manual adjustment through a potentiometer on the OI to adjust speed/voltage directly. In testing we found our happy place for values and would adjust to those. This also let us vary it slightly if we needed to. For the new flywheel we used bang-bang.
Quote:
Originally Posted by Ether
how long was your spin-up time from 0 rpm to operating speed?
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Spin-up time was roughly 2 seconds.
Quote:
Originally Posted by Ether
did you keep your wheel spinning continuously during the entire match, or did you spin it up when ready to shoot?
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Let me check on that with our operator tonight. From memory we would spin it up as we were approaching the goals. But, let me double check.
Quote:
Originally Posted by Ether
what were your two launch angles?
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We did not measure them, but I would put them at around 60 and 75-80 degrees. I can do a rough check of this tonight when I am at the workshop.
Quote:
Originally Posted by Ether
did you measure your actual launch speed?
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No.
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FRC Team 111 - WildStang (Mentor, Drive Coach)
FTC Team 7458 - Full Force! (Mentor, Coach)
FRC Team 3132 - Australia's FIRST FRC Team! (Holy crazy first year, Batman!)
