Rolf,
Without known exact operation condition, I can only guestimate, I would expect less than 3% speed variation with exact same motor under same load condition and temperature across many DRV10866.
Theoretically, you can estimate the speed but it is going to very difficult to measure moment of ineartia and friction torque.....
If you need speed control, you will need to measure frequency of FG pulse from DRV10866 and modulate PWM duty cycle.
Thanks,
Seil
Without known exact operation condition, I can only guestimate, I would expect less than 3% speed variation with exact same motor under same load condition and temperature across many DRV10866.
Theoretically, you can estimate the speed but it is going to very difficult to measure moment of ineartia and friction torque.....
If you need speed control, you will need to measure frequency of FG pulse from DRV10866 and modulate PWM duty cycle.
Thanks,
Seil