Head moving apparatus using stepping motor

Details Head moving apparatus using stepping motor Head moving apparatus using stepping motor

G - Physics

11

B

352/30.3

G11B 5/55 (2006.01) G11B 21/08 (2006.01) G11B 21/10 (2006.01)

Patent

CA 1230177

ABSTRACT OF THE DISCLOSURE A head moving apparatus using a stepping motor which compises a reversible stepping motor for moving a head and a motor drive control apparatus for driving the stepping motor in alternate forward and reverse directions through switching of excitation phases of the motor after the motor has been driven in one direction, thereby eliminating errors of the step position of the stepping motor due to a hysteresis characteristic thereof. The head thus can be stopped at the same position irrespective of whether it is accessed in the forward or reverse direction.

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