Method for reducing off-track gain for a disk drive actuator

Details Method for reducing off-track gain for a disk drive actuator Method for reducing off-track gain for a disk drive actuator

2007-05-18

2010-10-19

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603040, C360S294500

Reexamination Certificate

active

07814643

ABSTRACT:
A method of redefining nodal points of rotation comprises providing an actuator assembly with a comb, a pivot having an axis of rotation, comb legs on one side of the pivot, a voice coil motor, an arm, and a head gimbal assembly mounted to the arm with a head opposite the arm; defining a first nodal point of rotation for the actuator at a position that is on the arm between the pivot and the head; defining a second nodal point of rotation for the actuator at a position adjacent to the pivot and the coil; moving the first nodal point in a radial direction away from the axis toward the head; and moving the second nodal point in a radial direction away from the pivot to a geometric center of active legs of the coil.

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J.S. Heath, “Design of a Swinging Arm Actuator for a Disk File”, IBM J. Res. Dev., Jul. 1976, pp. 389ff.

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