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Modeling and cancellation of pivot nonlinearity in hard disk drives
IEEE Transactions on Magnetics, 2002In this paper, the modeling issue of the pivot nonlinearity in a typical hard disk drive is considered. Viscous friction, Coulomb friction and hysteresis effects are taken into account. Based on the proposed model, a nonlinear compensator is designed to make the compensated system to behave like a double integrator regardless of the magnitude of the ...
Jian Qin Gong +3 more
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Thermal Modeling of Hard Disk Drives
7th International Symposium on Information Storage and Processing Systems, 1996Abstract A methodology for thermal modeling of hard disk drives (HDD) using a computational fluid dynamics (CFD) program that solves the conjugate (conduction and convection) heat transfer problem is presented. The methodology addresses assumptions, model construction, and boundary conditions, as well as measurement methods for ...
Neal B. Schirle, David Lew
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Use of MEMS based accelerometers in hard disk drives
2001 IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Proceedings (Cat. No.01TH8556), 2002In this paper we describe the use of MEMS based accelerometers for the compensation of the effects of self-induced and external vibrations in commercial hard disk drives (HDD). Using a formal analysis on the HDD mechanics, the effects of a generic roto-translation of the HDD on the head position are evaluated.
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MEMS Applications in Hard Disk Drives
TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference, 2007As a new application of MEMS to hard disk drives, gimbal-chip (a MEMS chip that replaces suspension's gimbal function) was investigated. A micro-actuator for tracking servo was also integrated in the chip. Design, process, and performance of the chip are reported.
Toshiki Hirano, Henry Yang
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Hard disk drives for spacecraft application
57th International Astronautical Congress, 2006Accurate resolution imaging from Satellites involves large amounts of data that has to be stored on board the spacecraft computer. The data can be stored on Hard Disc Drives. However survival to the mechanical environment existing during the spacecraft launch and to the space environment during satellite operations are two major challenges in the use ...
Guglielmo S Aglietti +2 more
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Robust Control of a Hard Disk Drive
2013This chapter considers the design of a robust servo systemof hard disk drive(HDD). Three robust design methods are applied, namely, the μ-synthesis, \(\mathcal{H}_\infty\) optimal design and \(\mathcal{H}_\infty\) loop-shaping design procedure (LSDP). After a description of the HDD servo system dynamics in the first section, it is shown in details (in ...
Da-Wei Gu +2 more
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High-bandwidth controller design for dual-stage actuator system in hard disk drives
JVC/Journal of Vibration and Control, 2023Shota Yabui, Takenori Atsumi
exaly