Disk drive unit and control method for same

A control method for a disk drive unit upon which are mounted two acceleration sensors positioned at arbitrary positions a predetermined distance apart, the control method comprising a step of changing a sequence for calculating an amount by which a head actuator is adjusted during recording and readout operations based on an output from the two acceleration sensors sensing parallel components of an external disturbance on the disk drive unit in a direction parallel to a surface of a disk, wherein the calculation of the amount is performed without using location information of the acceleration sensors.

A control method for a disk drive unit upon which are mounted two acceleration sensors at arbitrary positions, the control method comprising a step of eliminating a resonance frequency component of the acceleration sensors prior to adjusting phase of outputs of the acceleration sensors, and a step of adjusting the phases of the outputs of the acceleration sensors so as to adjust a correction output.

A disk drive unit upon which are mounted, at arbitrary positions, acceleration sensors, the disk drive unit comprising a correction control unit for changing a sequence for calculating an amount by which a head actuator is adjusted during recording and readout operations based on an output from the acceleration sensors, wherein the calculation of the amount is performed without using location information of the acceleration sensors.