| 摘要 |
A disk drive control system that compensates for mechanical bias torques present in disk drives. A transducer, commonly referred to as a head, is attached to an actuator arm that is subjected to mechanical bias torques, including flex bias torque and bearing friction. The net bias torque has a mechanical memory that is manifested as hysteresis whose magnitude depends on the size of the stroke length between inflection points of the transducer in seek operations. The dependence of the net bias torque includes location of the transducer, direction of the seek, and the history of previous seeks. The dependence may further include operating temperature of the disk drive. The disk control system determines and applies these corrections to the disk drive to enhance the seek performance.
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