Patent ID: 6922303
Filing Date: 2005-07-26
Classification: G11B

Abstract:
1. A hard disk drive, comprising: a base plate; a spindle motor coupled to said base plate; a disk coupled to said spindle motor; an actuator arm mounted to said base plate; a voice coil motor coupled to said actuator arm; a flexure beam coupled to said actuator arm; a head coupled to said flexure beam and said disk, said head having a read element that can sense said disk to generate a position error signal; a reaction mass coupled to said actuator arm; a transducer coupled to said reaction mass and said actuator arm; and, a controller coupled to said head, said voice coil motor and said transducer, said controller receives an acceleration signal from said transducer and sums said acceleration signal with a first summed signal to create a second summed signal that is processed and sent to said voice coil motor, said first summed signal being a function of said position error signal.