Patents by Inventor Paul Yeagle

Paul Yeagle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Disk drives and methods allowing for dual stage actuator adaptive seek control and microactuator gain calibration
    Patent number: 7283321
    Abstract: A disk drive includes a disk, a head, a coarse actuator, a microactuator, and a servo controller. The microactuator positions the head relative to the disk. The coarse actuator positions the microactuator and the head relative to the disk. The servo controller controls the microactuator in accordance with a microactuator feedforward control signal that is provided by the servo controller based on a plurality of microactuator feedforward values. The servo controller tunes at least one microactuator feedforward value of the plurality of microactuator feedforward values. The servo controller scales the microactuator feedforward control signal in accordance with a microactuator feedforward gain, and the servo controller adjusts the microactuator feedforward gain based on a position error signal that is determined during a seek operation.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: October 16, 2007
    Assignee: Maxtor Corporation
    Inventors: Yu Sun, Yunfeng Li, Lin Guo, Paul Yeagle