Automatic residual phase error compensation circuit for a...

Details Automatic residual phase error compensation circuit for a... Automatic residual phase error compensation circuit for a...

G - Physics

11

B

341/107

G11B 15/46 (2006.01) G05B 11/01 (2006.01) G11B 15/473 (2006.01) G11B 19/28 (2006.01) H02P 23/00 (2006.01)

Patent

CA 1130421

ABSTRACT OF THE DISCLOSURE A digital servo control system for controlling a drive motor accumulates speed and phase error numbers and produces a pulse width modulated signal in response thereto. Phase errors are measured by counting pulses of a clock signal between the arrival of a position signal related to a rotational position of the drive motor and the arrival of a reference signal. An automatic residual error compensating circuit controls a delay applied to the position signal in accordance with residual phase error to minimize the same. -1-

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