Results 261 to 270 of about 162,355 (348)

Feedforward Control for Track-Seeking Control in Hard Disk Drive with Sampled-Data Polynomial Based on First-Order Hold

International Congress of Mathematicans, 2021
To decrease the seek time of hard disk drives (HDDs), we proposed a feedforward control method by using a sampled-data polynomial based on a first-order hold (FOH).
Kazuho Igarashi, R. Igarashi, T. Atsumi, S. Nakadai   +3 more
semanticscholar   +1 more source

Optimal track following control for hard disk drives

6th International Workshop on Advanced Motion Control Proceedings, 2000
This paper presents an optimal track following control design procedure for hard disk drives (HDD) to reach higher track densities given the disturbance and noise model in the HDD and the actuator bandwidth limitation. The linear-quadratic Gaussian/loop-transfer recovery (LQG/LTR) technique is used to design a family of controllers that minimize the ...
null Chen Lin, null Guoxiao Guo, null Ben M. Chen, null Chi-Chung Ko   +3 more
openaire   +1 more source

Track follow servo optimization for disk drives

Proceedings of the 2004 IEEE International Conference on Control Applications, 2004., 2005
The track misregistration (TMR) requirement for hard disk drives (HDDs) has become more demanding to keep pace with increase in recording density. It is no longer sufficient to make design decisions for actuator, servo, power amplifier and formatting efficiencies in isolation.
P. Hingwe, A. Gupta
openaire   +1 more source

MEMS milliactuator for hard-disk-drive tracking servo

Journal of Microelectromechanical Systems, 1998
This paper describes the design, fabrication, and operational characteristics of a MEMS milliactuator designed for servo tracking in a hard-disk drive (HDD). The actuator is designed to increase the bandwidth of an HDD tracking servo and pack more recording tracks on a disk.
T. Hirano, null Long-Sheng Fan, J.Q. Gao, W.Y. Lee   +3 more
openaire   +1 more source

Repetitive Track Seeking Algorithm for Optical Disk Drives

Japanese Journal of Applied Physics, 1993
In order to achieve stable and rapid track seeking, a repetitive track seeking algorithm, which realizes highly accurate velocity control through velocity error integration, has been developed. Simulations and experiments show that the algorithm is effective in optical head velocity control.
Minoru Akiyama Minoru Akiyama, Jun Ishikawa Jun Ishikawa   +1 more
openaire   +1 more source

Track-Following Control Using Resonant Filter in Hard Disk Drives

IEEE/ASME Transactions on Mechatronics, 2007
A design method to suppress the disturbances by using a resonant filter for track-following control has been developed. The resonant filter can realize a stable resonant mode by a filter to obtain a circular vector locus that recedes from the critical point on the Nyquist diagram.
Takenori Atsumi, Atsushi Okuyama, Masahito Kobayashi   +2 more
openaire   +1 more source

A nonlinear track following controller for hard disk drives

2000 Asia-Pacific Magnetic Recording Conference. Digests of APMRC2000 on Mechanical and Manufacturing Aspects of HDD (Cat. No.00EX395), 2002
Most of the HDD track following controller are linear controllers. This paper presents a nonlinear control scheme for track following. The controller mainly includes the parts: Tracking Differentiator (TD), Extended State Observer (ESO) and Nonlinear PID (NLPID).
null Jianyi Wang, null Youyi Wang, null Guoxiao Guo   +2 more
openaire   +1 more source

Triple-Stage Track-Following Servo Design for Hard Disk Drives

Volume 2: Mechatronics; Mechatronics and Controls in Advanced Manufacturing; Modeling and Control of Automotive Systems and Combustion Engines; Modeling and Validation; Motion and Vibration Control Applications; Multi-Agent and Networked Systems; Path Planning and Motion Control; Robot Manipulators; Sensors and Actuators; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamic Controls; Vehicle Dynamics and Traffic Control, 2016
This paper studies possible robust control design methods in triple-stage actuation settings for achieving minimum position error signal (PES) while maintaining enough stability margins. Firstly, the sensitivity-decoupling design technique, is utilized to estimate the resulting increase in low frequency disturbance attenuation and servo bandwidth.
Jinwen Pan, Omid Bagherieh, Behrooz Shahsavari, Roberto Horowitz   +3 more
openaire   +1 more source

Multirate digital control for high track density magnetic disk drives

IEEE Transactions on Magnetics, 2003
As track density increases, higher control bandwidth is required to attain sufficient positioning accuracy while suppressing the effect of high frequency disturbances in disk drive controllers/actuators. This paper presents a computation effective fixed order multirate digital control system.
null Seung-Hi Lee, null Chung Choo Chung, null Sang-Min Suh   +2 more
openaire   +1 more source

Dynamics affecting tracking bias in hard disk drive rotary actuators

Proceedings of 1995 American Control Conference - ACC'95, 2005
The hand-off from seeking tracking in hard disk drives can be made more quickly if the average bias current necessary to maintain tracking is known a priori. It has been observed that there are several variables which influence bias including the history of seeks made by the drive.
K. Eddy, W. Messner
openaire   +1 more source