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Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model
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机译:用于基于等效一维状态模型使用观察器对磁盘驱动器的磁道进行自我伺服写入的方法和设备
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摘要
A method is disclosed for writing servo patterns for tracks on a rotating magnetic disk medium of a disk drive. Servo patterns are written on a reference track of the disk medium. Track following of the written servo patterns on the reference track is performed using a servo loop having a closed-loop response. A position error signal is generated for the reference track based on the track following. A correction signal is generated based on the track following using an observer of a one-dimensional state model that is equivalent to a two-dimensional state model of the servo loop. Servo patterns are written on a target track during track following of the reference track. The position error signal of the servo loop is adjusted based on the correction signal to reduce radial error propagation from the reference track to the target track.
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