Seek trajectory generation using adaptive filtering

Details Seek trajectory generation using adaptive filtering Seek trajectory generation using adaptive filtering

2007-04-17

2007-04-17

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077010, C360S078090

Reexamination Certificate

active

11000680

ABSTRACT:
Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.

REFERENCES:
patent: 6549364 (2003-04-01), Shih
patent: 6831809 (2004-12-01), Kagami et al.
patent: 2004/0037000 (2004-02-01), Yu
patent: 2004/0090698 (2004-05-01), Dang et al.

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