Subject:
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Re: Speed control of motors
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 30 Mar 2000 18:04:44 GMT
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Viewed:
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1491 times
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In lugnet.robotics, "ssweeney@sanders.com" <ssweeney@sanders.com> writes:
> Someplace (a book or web page) I saw a way to control the speed of a
> mindstorm motor. Not just changing the power, but the speed.
>
> If I remember right, they created an NQC task that did its own PWM on
> the motor output. I spent a frustrating evening trying to do this and got
> nowhere fast.
>
> What I would like to be able to do is to make graceful turns of various
> radii by adjusting the speeds of the drive motors. Since the bot is only
> gently loaded, the power settings have little or no effect on the bot.
I've dealt with some of the same issues. The best resource I know of off hand
is the Floyd-Steinberg Motor Control at www.mrob.com . It's not perfect, but
it gets the job done. The way it works is turn the motor on and off in pulses
so most bots move in a "jerky" motion. I found that the lighter and simpler
the power train, the worse the effect. I have a few programs on my Lego
system at home that are a little more involved and expanded than the ones he
gives (also in NQC). I can see what I have and post them if you'd like.
peace
---T
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Message is in Reply To:
 | | Speed control of motors
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| Someplace (a book or web page) I saw a way to control the speed of a mindstorm motor. Not just changing the power, but the speed. If I remember right, they created an NQC task that did its own PWM on the motor output. I spent a frustrating evening (...) (25 years ago, 30-Mar-00, to lugnet.robotics)
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