Subject:
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RE: Motor Speed Control
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Newsgroups:
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lugnet.robotics.rcx.nqc
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Date:
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Tue, 30 Nov 2004 16:26:39 GMT
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Reply-To:
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<rhempel@STOPSPAMMERSbmts.com>
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Viewed:
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5992 times
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> Like driving a car with the brakes on. Start with the brake totally pressed, and
> the more you push on the gas, the less you push on the brake, until finally, at full
> speed, you're not pushing on the brake.
>
> But, that will use more gas than the gas/float method we normally use.
>
> Does that make sense?
Actually, it's more like standing on the brakes, letting go and then
gunning the gas, stepping off the gas and standing on the brakes :-)
And yes, that WILL use more gas, and more batteries. Now, if the
resolutiion of timing for the brake command was small enough to
slow the motor significantly without actually stopping it, then
we'd have something!
Cheers, Ralph
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Message has 1 Reply:
 | | RE: Motor Speed Control
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| (...) :) (...) I'm not sure how the Swan firmware does it, but I have mine set so it cycles every 8 ms. It's on for 0 to 8 ms, then off (brake) for the rest, depending on the speed. That's fast enough to produce a very smooth result. There is no (...) (20 years ago, 30-Nov-04, to lugnet.robotics.rcx.nqc)
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Message is in Reply To:
| | RE: Motor Speed Control
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| (...) Yes, but I think the "power" portion of the cycle will draw more, because it's always trying to go from stop to full speed. Like driving a car with the brakes on. Start with the brake totally pressed, and the more you push on the gas, the less (...) (20 years ago, 30-Nov-04, to lugnet.robotics.rcx.nqc)
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