Title :
Signal space analysis of head positioning formats
Author :
Patapoutian, Ara
Author_Institution :
Quantum Corp., Shrewsbury, MA, USA
fDate :
5/1/1997 12:00:00 AM
Abstract :
Head positioning formats or servo-bursts are used on disk drives to estimate the off-track position or the position error signal (PES) of the head with respect to a given track. In this paper the signal space technique is used to design estimators (demodulators) for different head positioning formats and to measure their performances. It will be shown that every format corresponds to a closed loop in the signal space and that the performance of a format is proportional to the circumference of the closed loop in signal space
Keywords :
magnetic heads; maximum likelihood estimation; position control; servomechanisms; closed loop; demodulator; disk drive; estimator; head positioning format; off-track position; position error signal; servo-burst; signal space analysis; Demodulation; Disk drives; Disk recording; Magnetic heads; Maximum likelihood estimation; Performance evaluation; Position measurement; Servomechanisms; Signal analysis; Signal design;
Journal_Title :
Magnetics, IEEE Transactions on
