brushless motors
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does anybody know of a source
for information about using brushless motors? How do I control the timing?
Change the speed? reverse the direction?
can it be done with a pic or a stamp, or do i need special electronics, or
both?
thanks very much to all in advance,
raphael abrams
for information about using brushless motors? How do I control the timing?
Change the speed? reverse the direction?
can it be done with a pic or a stamp, or do i need special electronics, or
both?
thanks very much to all in advance,
raphael abrams
Comments
>does anybody know of a source
>for information about using brushless motors? How do I control the timing?
>Change the speed? reverse the direction?
Texas Instruments [noparse][[/noparse] http://www.ti.com ](and others) make small DSP units to
do just that.
Allegro has some non-microcontroller driver chips which you might want to
check into at
[noparse][[/noparse] http://www.allegromicro.com ] . Typical are the 8902 and 8906. Samples
are available
>can it be done with a pic or a stamp, or do i need special electronics, or
>both?
Perhaps with a high speed PIC, but more likely a Scenix SX processor.(50
MHz and up) [noparse][[/noparse] http://www.scenix.com ]. The Scenix offers Virtual
Peripherals (see website) and I don't know if brushless motors have been
included in the array of peripherals they offer, but various Pulse
Modulation .peripherals are available
Essentilly you are exciting 3 different windings, each at 1/3 of the full
rev cycle. So the answer is highly dependant (among other considerations)
on how fast the motors will be running, and how fast the processor can
update the information (voltage pulses) being sent to the windings. Add to
that processing of feedback info, etc and it becomes rather evident that
any processor has a lot to do in a short period of time.
>thanks very much to all in advance,
That just gives you a research direction, more than anything.
Regards,
Bruce Bates
>raphael abrams