Title :
Reliable recalibration of DC head skew in hard disk drives
Author :
Xiao, Y. ; Zhang, C. ; Ge, X.Y. ; Sun, J.N. ; Wang, X.Y.
Author_Institution :
Coll. of Inf. Eng., Shenyang Univ. of Chem. Technol., Shenyang, China
Abstract :
In hard disk drives (HDDs), head skew error among multiple heads is pre-calibrated during manufacturing process. Due to environmental change or non-operating shock, additional head skew errors across stroke may be resulted in. In this paper, a reliable recalibration strategy of DC head skew error during servo startup is proposed, where a sector-dependent head-switching scheme for avoidance of wrong calibration is developed. Test results demonstrate its effectiveness to enhance drive performance post non-operating shock.
Keywords :
calibration; disc drives; hard discs; servomechanisms; DC head skew error; environmental change; hard disk drive; manufacturing process; post nonoperating shock; reliable recalibration; sector-dependent head-switching scheme; servo startup; Calibration; Drives; Electric shock; Electronic mail; Hard disks; Servomotors; Switches;
Conference_Titel :
Modelling, Identification and Control (ICMIC), Proceedings of 2011 International Conference on
Conference_Location :
Shanghai
DOI :
10.1109/ICMIC.2011.5973722
