Reaction mass dual-stage actuator (DSA) and sensor

Details Reaction mass dual-stage actuator (DSA) and sensor Reaction mass dual-stage actuator (DSA) and sensor

2005-07-26

2005-07-26

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077020, C360S078050

Reexamination Certificate

active

06922303

ABSTRACT:
A hard disk drive that has a reaction mass and a transducer that can be used to move and/or sense the acceleration of an actuator arm of the drive. The transducer is coupled to a disk controller that can provide output signals which induce a movement of the reaction mass. Movement of the reaction mass will cause a responsive movement of a head(s) coupled to the actuator arm. The transducer can also provide input signals to the controller that correspond to an acceleration of the actuator arm. The acceleration signal can provide force feedback for a servo system of the drive.

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