Results 21 to 30 of about 1,751,274 (294)

Head-Positioning Control Using Virtual Resonant Modes in a Hard Disk Drive

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
In conventional control systems in hard disk drives, it is difficult to compensate for disturbances above the primary mechanical resonance. In this paper, a design method that uses a virtual resonant mode in head-positioning systems of hard disk drives ...
Takenori ATSUMI
doaj   +1 more source

Controller Switching Strategy for Constrained Systems and Its Application to Hard Disk Drives

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
We propose a switching control strategy for systems with state and control constraints. Prior studies have proven that switching control strategies have the ability to meet performance objectives, such as fast response and good disturbance rejections ...
Atsushi OKUYAMA, Takashi YAMAGUCHI
doaj   +1 more source

Polymer-based dampening layer application to improve the operating shock tolerance of hard disk drive

open access: yesJournal of Engineering and Applied Science, 2022
This paper discusses a passive vibration control method to improve the shock tolerance of hard disk drives (HDDs) in operating condition (op-shock tolerance).
Djati Wibowo Djamari   +3 more
doaj   +1 more source

The Disk Drive as an Audio Recorder [PDF]

open access: yes, 2019
The following tutorial paper describes how a block-structured mass storage device, such as a Winchester disk drive, may be made to function as part of a digital audio recording and editing system: the so-called -tapeless recorder-.
Rumsey, Francis
core   +1 more source

A production throughput forecasting system in an automated hard disk drive test operation using GRNN

open access: yesJournal of Industrial Engineering and Management, 2016
Purpose: The goal of this paper is to develop a pragmatic system of a production throughput forecasting system for an automated test operation in a hard drive manufacturing plant.
Nara Samattapapong, Nitin Afzulpurkar
doaj   +1 more source

Reduction of Oil Contamination on Hard Disk Drive Parts using Automatic Hydrocarbon Washing Machine [PDF]

open access: yesJournal of Mechanical Engineering and Sciences, 2011
This paper discusses the use of the Taguchi method and response surface analysis to minimize the proportion of defectives by oil contamination on one product of hard disk drive parts by using an automatic hydrocarbon washing machine.
Somkiat Tangjitsitcharoen   +1 more
doaj   +3 more sources

Thermal Behavior of Frictional Properties on Ultra-Thin Perfluoropolyether Lubricant Film

open access: yesTribology Online, 2016
We investigate the thermal behavior of the friction property of ultra-thin perfluoropolyether (PFPE) lubricant film on diamond-like carbon (DLC) overcoats of magnetic disks.
Hiroshi Tani   +2 more
doaj   +1 more source

Spin-polarized scanning tunneling microscopy experiments on the rough surface of a polycrystalline NiFe film with a fine magnetic tip sensitive to a well-defined magnetization component

open access: yesAIP Advances, 2016
We developed a micrometer-sized magnetic tip integrated onto the write head of a hard disk drive for spin-polarized scanning tunneling microscopy (SP-STM) in the modulated tip magnetization mode.
H. Matsuyama   +7 more
doaj   +1 more source

Flow-Induced Vibration Reduction for Hard Disk Drive with a Window Spoiler

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
As the track density of hard disk drives is increased, ways to suppress flow-induced vibration such as vibration of the disk and arm, are needed. For practical application, such countermeasures should not increase power consumption.
Masato IKEGAWA, Hiroshi MUKAI
doaj   +1 more source

Advances in Servo Track Writing (STW) Technologies: A Review [PDF]

open access: yes한국정밀공학회지, 2020
Since IBM introduced the first hard disk drive (HDD) with 5 MB capacity in 1956, tremendous advances have been achieved in HDD technology and business. The areal density has increased 650 million times in the last 60 years. To implement the digital servo
Ho Seong Lee
doaj   +1 more source

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