Subject:
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Re: Controling LEGO trains via Decta Control Lab
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 29 Oct 1998 06:19:51 GMT
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Viewed:
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2361 times
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Steve Barile <steve.bar@worldnet/att/net> wrote:
> My prob is that the smallest time "tick" is 1/10 of a second. My experiments
> with 10Hz pulsing is not to good. Does any one have a better solution. An EE
> question, to change the speed do you vary the duty cycle, freq, or the
> voltage of the square wave?
To change the speed of the pulsing, you change the frequency. Frequency is
measured in Hz. You want more Hz.
To change the speed of the train, you increase either the duty cycle or the
voltage. The duty cycle is the percentage of time that the square wave is
at a high voltage. The voltage is indirectly related to speed through the
circuitry in the motor, but the gist is that more voltage makes the motor
turn faster.
Note that you can also get pulsing effects if your duty cycle is too low,
but in your case, it sounds like it's the 10 Hz frequency that is giving
you trouble. You should work on improving that aspect of things if at all
possible.
-Kekoa
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Message is in Reply To:
 | | Controling LEGO trains via Decta Control Lab
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| Hi All, I have been working on controlling LEGO trains thru the Decta Control Lab and I got a tip to pulse the power to the rails to better control the trains speed. There are 8 power settings via the ctrl lab and there are really only 2 or 3 (...) (26 years ago, 29-Oct-98, to lugnet.robotics)
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