Apparatus and method for reducing effects of slip/stick in a dis

Details Apparatus and method for reducing effects of slip/stick in a dis Apparatus and method for reducing effects of slip/stick in a dis

1992-11-20

1995-03-07

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7806, 360 7804, G11B 5596

Patent

active

053963792

ABSTRACT:
A disk storage system having a mechanism for minimizing effects of slip/stick in a disk drive head assembly. A transducer is used to read data from and write data to a rotating disk. An actuator assembly holds the transducer. The actuator assembly is comprised of a load member onto which a flexure is attached. A slider is mounted onto the flexure. The transducer is mounted onto the slider. In this manner, the transducer can pitch and roll to maintain a constant height in reference to the disk's surface. A servo mechanism controls the acceleration and deceleration of the head according to a predetermined seek profile specifying how the transducer is to be moved for a particular seek. As the transducer approaches the destination track, the profile calls for a sudden deceleration surge in order to compensate for misalignments occurring during the seek due to the flexure slipping laterally in reference to the load member and sticking in that position because of friction.

REFERENCES:
patent: 4591933 (1986-05-01), Quackenbush
patent: 4899234 (1990-02-01), Genheimer
patent: 5119250 (1992-06-01), Green et al.
patent: 5126897 (1992-06-01), Ogawa et al.
patent: 5150266 (1992-09-01), Albert
patent: 5220547 (1993-06-01), Yasukawa et al.
National Technical Report, Apr. 1989, Moriya et al., "CMF Actuator High Speed Access System". pp. 165-171.

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