Time-varying, non-synchronous disturbance identifi

专利名称：Time-varying, non-synchronous disturbance

identification and cancellation in a rotatingdisk storage device

发明人：Kok-Kia Chew申请号：US09974698申请日：20011009

公开号：US20020109934A1公开日：20020815

专利附图：

摘要：A method, apparatus, or product for a rotating disk storage device. In oneembodiment, the apparatus includes a disk, a spindle motor that rotates the disk, a

transducer, an actuator arm that can move the transducer, and a controller. The

controller can control the movement of the actuator arm to move the transducer acrossthe disk surface from a first track to a second track, and determine a position error signal(PES) at one or more positions between the first and second tracks, where the PESincludes a non-repeatable disturbance signal. The controller can iteratively generate adisturbance correction signal at the one or more positions based on the PES, combine thedisturbance correction signal with the PES to minimize the non-repeatable disturbancesignal to provide a corrected PES, and vary, at the one or more positions, the movementof the transducer as a function of the corrected PES.

申请人：CHEW KOK-KIA

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