Results 1 to 10 of about 162,256 (249)
A gradient-based track-following controller optimization for hard disk drive
IEEE Transactions on Industrial Electronics, 2003 This paper presents a gradient-based parameter optimization method to find the optimal compensator that minimizes the standard deviation (/spl sigma//sub PES/) of the position error signal (PES) in a hard disk drive servo system. By using the plant response data and the PES gradient information based on the nominal plant model, optimal digital ...
Qi Hao +4 more
semanticscholar +4 more sources
Data-Driven Track Following Control for Dual Stage-Actuator Hard Disk Drives [PDF]
arXiv.org, 2023 In this paper, we present a frequency domain data-driven feedback control design methodology for the design of tracking controllers for hard disk drives with two-stage actuator as a part of the open invited track 'Benchmark Problem on Control System ...
N. Prakash +3 more
semanticscholar +3 more sources
A self-monitoring analysis and reporting technology dataset of 147,496 hard disks [PDF]
Scientific DataIn order to study hard disk failure prediction,this paper introduces SMART-Z, a dataset comprising 147,496 pieces of hard disk SMART data periodically collected by a large distributed video data center in China in the enterprise application environment ...
Shuting Wei +3 more
doaj +2 more sources
Tracking Actuator for Magneto-optical Disk Drives.
Journal of the Japan Society for Precision Engineering, 1992 This paper describes the development of the tracking actuator for high-speed magneto-optical disk drives. The rotating mirror tracking actuator suspended by a single leaf spring is adopted. The actuator is required to have a fine mechanical vibration characteristics, which enables precise control against the high speed rotation of disks for high speed ...
Junichi ICHIHARA +2 more
openaire +3 more sources
Journal of Advanced Mechanical Design, Systems, and ManufacturingThis research proposes feedforward control techniques aimed at reducing the seek time in hard disk drives (HDDs). These techniques utilize a sampled-data polynomial approach based on a triangular approximation first-order hold (triangle hold) with a non ...
Kazuho IGARASHI +3 more
doaj +3 more sources
Tracking Property of Adjacent Track Servo System for Optical Disk Drives [PDF]
Japanese Journal of Applied Physics, 2011 An adjacent track servo (ATS) technology for recording to an optical disk without track information is expected to produce optical disks with lower cost. The main problem of the ATS system is its stability. Generally, ATS systems become stable with a feed-forward controller.
Yoshiyuki Urakawa +4 more
openaire +2 more sources
Track-seeking controller design for dual-stage actuator in magnetic disk drives
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000 A new decoupled track-seeking controller design is described for dual-stage servo systems of magnetic disk drives. The controller is applied to the dual-stage system with a push-pull piezoelectric (PZT) micro-actuator and enables highspeed one-track seeking and short-span track seeking. The one-track seeking controller was designed in three steps: 1) a
Masahito Kobayashi +2 more
openaire +4 more sources
Nonlinear Tracking Control for a Hard Disk Drive Dual-Stage Actuator System
2007 IEEE International Conference on Control and Automation, 2007 This paper presents a nonlinear tracking control method for a hard disk drive (HDD) dual-stage actuator (DSA.) system that consists of a voice coll motor (VCM) actuator and a piezoelectric (PZT) microactuator. Conventional track seeking controllers for DSA systems were generally designed to enable the VCM actuator to approach the target track without ...
Zheng, Jinchuan +3 more
openaire +5 more sources
Magneto-Optic Disk Drive of High Speed Track Accessability
Japanese Journal of Applied Physics, 1987 This paper describes 5 1/4-in. high track-access performance magneto-optic disk drive. The drive employs a split optical system with a swing-arm actuator, the inertia of which is 160 g cm2(equivalent to a linear actuator of 10 g weight). An avarage seek time was estimated less than 35ms in the absence of latency.
H. Ishibashi +6 more
semanticscholar +2 more sources
Adaptive Learning Control Method for Optical Disk Drive Tracking Control.
The Journal of the Institute of Television Engineers of Japan, 1994 In response to the recent demand for high-density recording on an optical disk, the industry is now “going narrow track”. We have developed an adaptive learing control method capable of changing its learning according to track correlation, thus making it possible to avoid unnecessary learning during equipment vibration to avoid the lack of stability ...
Tsuyoshi Katayama, Masato Nagasawa
openaire +3 more sources