Title :
Efficient implementation of adaptive feedforward runout cancellation in a disk drive
Author :
Weerasooriya, Siri ; Zhang, J.L. ; Low, T.S.
Author_Institution :
Data Storage Inst., Nat. Univ. of Singapore, Singapore
fDate :
9/1/1996 12:00:00 AM
Abstract :
This paper presents an improved adaptive feedforward compensation (AFC) technique for periodic disturbance cancellation. It has a better rate of convergence than AFC. It can also compensate for a particular harmonic without amplifying the adjacent uncompensated harmonics. A frequency domain design strategy is proposed. The results are verified both through simulations and by an experiment on a disk drive with a dedicated servo channel
Keywords :
compensation; feedforward; frequency-domain synthesis; hard discs; servomechanisms; adaptive feedforward runout cancellation; dedicated servo channel; disk drive; frequency domain design strategy; hard discs; harmonic compensation; periodic disturbance cancellation; rate of convergence; Attenuation; Automatic frequency control; Convergence; Disk drives; Hard disks; Parametric statistics; Rail to rail outputs; Servomechanisms; Shape; Transfer functions;
Journal_Title :
Magnetics, IEEE Transactions on
