Giovanni Cherubini, Roy D. Cideciyan, et al.
IEEE Transactions on Magnetics
The positioning accuracy achievable by track-follow servo for flexible tape media is investigated using advanced concepts for several elements of the system. First, the servo pattern geometry in the timing-based servo system is designed in conjunction with a digital synchronous servo channel to minimize the measurement error in the position-error signal. Second, a flangeless tape path is introduced to mitigate high-frequency components of the lateral tape motion. Finally, a track-follow controller is designed based on the H∞ approach, taking into account the disturbance and noise characteristics of tape path and servo-channel and the measured plant transfer function. Combining these elements with a new high SNR magnetic tape based on perpendicularly-oriented BaFe particles, we demonstrate a closed-loop track-follow performance with a standard deviation of the position-error signal of less than 15 nm. © 2011 IFAC.
Giovanni Cherubini, Roy D. Cideciyan, et al.
IEEE Transactions on Magnetics
Tomas Tuma, Angeliki Pantazi, et al.
MECH 2010
Stanisław Woźniak, Thomas Bohnstingl, et al.
ERCIM News
Manuel Le Gallo, Abu Sebastian, et al.
IEDM 2017