What is the max theoretical precision of a Odrive combined with a hoverboard Motor?
Im thinking about building a direct-drive Telescope. (Two Motors driving two axis of a telescope without any gears between. Just the Motors)
I know, one big problem is the encoder. The accuracy of such a encoder would be at least 20bit.
360° * 60 arcmin * 60 arcsec = 1296000 CPR to get arcsecond accuracy (what I would need for a telescope)
Ideally it would be about ten times as much.
From my knowledge of BLDC motors I would guess that the coils are driven with PWM to set a certain position between two coils. What is the precision of this pwm. This multiplied by number of coils would then result in kind of the maximum resolution I guess.
The Hoverboard Motor is just a example of a motor. But would certainly be very nice if this motor could be used for this purpose!
thx for a answer.
As you can see direct drive telescopes exist and are not really cheap
On the Spec-Page in this link the resolution is shown. I think I wasnt that far off…