Disk drive storage system having means for compensating for seek

Details Disk drive storage system having means for compensating for seek Disk drive storage system having means for compensating for seek

1984-06-15

1986-10-07

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, 360 77, 318625, G11B 2108, G11B 2102

Patent

active

046162771

ABSTRACT:
Seek drive forces coupled between head actuators in a magnetic disk storage system employing separately controllable head actuators are prevented from affecting reliable head actuator operation. For this purpose a compensating signal is derived proportional to the driving current employed in performing an actuator seek operation. This compensating signal is fed forward into the drive circuit of the other actuator so as to cause this other actuator to begin moving its heads in a direction opposite to that which would be caused by the later arriving coupled drive forces, thereby making it possible to prevent driving forces coupled between actuators from deleteriously interferring with reliable actuator operation.

REFERENCES:
patent: 4075517 (1978-02-01), Adler
patent: 4136293 (1979-01-01), Patel
Patent Abstracts of Japan, vol. 6, No. 5 (P-97) [883] Jan. '82, & JP-A-56-130865 on p. 98P97.
IBM TDB, vol. 15, No. 3, "Balanced Force Voice-Coil Actuator", Frater, 8/72, p. 749.

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