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 16:07:46 GMT
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Viewed:
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5884 times
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> > I also think this type of control will be harder on batteries.
>
> The brake function (as far as I know) should not use more
> battery power as the short circuit is in the driver chip itself.
>
> The drivers are MOSFETs, so setting the H bridge to brake does
> not actually apply any battery power to the motor itself...
>
> Does that make sense?
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 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?
Steve
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Message has 1 Reply:
 | | RE: Motor Speed Control
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| (...) 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 (...) (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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| (...) The brake function (as far as I know) should not use more battery power as the short circuit is in the driver chip itself. The drivers are MOSFETs, so setting the H bridge to brake does not actually apply any battery power to the motor (...) (20 years ago, 30-Nov-04, to lugnet.robotics.rcx.nqc)
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