Patent ID: 8634159
Filing Date: 2014-01-21
Classification: G11B

Abstract:
1. A magnetic recording disk drive comprising: a disk drive base; a spindle motor attached to the base and having a rotational axis; a magnetic recording disk mounted to the spindle motor for rotation about said rotational axis; a rotary actuator attached to the base; a recording head attached to the actuator and movable across the disk in a generally arcuate path from a head inside diameter position (h a first vibration sensor attached to the base and having a vibration sensitivity axis generally parallel to a radius from the spindle motor rotational axis to a head position between h a second vibration sensor attached to the base, the second vibration sensor being spaced from the first vibration sensor and having a vibration sensitivity axis generally parallel to the vibration sensitivity axis of the first vibration sensor; and a third vibration sensor attached to the base and having a vibration sensitivity axis generally orthogonal to the vibration sensitivity axis of the first vibration sensor.