Low acoustic noise head actuator

Details Low acoustic noise head actuator Low acoustic noise head actuator

1988-09-14

1990-09-11

Richardson, Robert L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 7804, 360 7806, 369 43, G11B 2110

Patent

active

049568310

ABSTRACT:
A disk drive system has a closed loop servo control system which is specially tuned for optimal deceleration during performance of a track access operation. The servo control system is returned in response to a track jump signal to perform a track jump operation at a lesser deceleration and thereby reduce low frequency acoustic noise produced by physical vibrations of the disk drive system. The returning of the servo control system is advantageously achieved by reducing the gain-bandwidth product of the closed loop within the servo control system.

REFERENCES:
patent: 4398228 (1983-08-01), Bauck
patent: 4495608 (1985-01-01), Kimura
patent: 4600868 (1986-07-01), Bryant
patent: 4615023 (1986-09-01), Inada et al.
patent: 4627043 (1986-12-01), Uehara
patent: 4675671 (1987-06-01), Ashbee et al.

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