Start-up commutation method for a rotating magnetic storage devi

Details Start-up commutation method for a rotating magnetic storage devi Start-up commutation method for a rotating magnetic storage devi

1995-03-10

1997-05-27

Ro, Bentsu

Electricity: motive power systems

Motor load, armature current or force control during...

318254, 318439, H02P 622

Patent

active

056335695

ABSTRACT:
A method of driving a motor without initial back rotation includes the steps of identifying a rest position 22 of a storage medium 20, mapping the rest position of storage medium 20 to a motor drive sequence, and driving the motor with the motor drive sequence, thereby enabling motor start-up without back rotation. The method is applicable to unipolar and bipolar drive methods as well as inductive read type and magneto-resistive type heads.

REFERENCES:
patent: 4785242 (1988-11-01), Vaidya et al.
patent: 4843316 (1989-06-01), Hesterman
patent: 5227930 (1993-07-01), Thanos et al.

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