Patent ID: 6304409
Filing Date: 2001-10-16
Classification: G11B

Abstract:
A disc drive comprising:a recordable disc upon which a plurality of tracks are radially defined;a rotary actuator having an E-block which supports a head adjacent the disc;a bearing assembly having a stationary shaft and a bearing sleeve journaled about the shaft, wherein the bearing sleeve is rigidly affixed to the E-block so that the actuator rotates about the bearing assembly;a proximity probe disposed adjacent the E-block that generates a bearing translation signal representative of a change in the proximity of the E-block relative to the proximity probe;an actuator motor coupled to the actuator; anda servo control circuit which applies current to the actuator motor to position the head in relation to servo signals generated as the head reads servo data stored on the disc, wherein the servo circuit further adjusts the current applied to the actuator motor in response to the bearing translation signal.