scholarly journals Head Positioning Control System for Hard Disk Drives.

1997 ◽  
Vol 117 (3) ◽  
pp. 348-355 ◽  
Author(s):  
Shinji Takakura
Keyword(s):  
Control System ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Positioning Control ◽  
Head Positioning

Head-positioning control system using thermal actuator in hard disk drives

2013 ◽  
Vol 19 (9-10) ◽  
pp. 1483-1494 ◽  
Author(s):  
Masaki Odai ◽  
Takenori Atsumi ◽  
Haruaki Otsuki ◽  
Toshihiro Arisaka
Keyword(s):  
Control System ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Thermal Actuator ◽  
Disk Drives ◽  
Positioning Control ◽  
Head Positioning

Optimization of adaptive feedforward repeatable run-out cancellation for positioning control system of hard disk drives

2012 ◽  
Vol 18 (9-10) ◽  
pp. 1703-1709 ◽  
Author(s):  
Shota Yabui ◽  
Atushi Okuyama ◽  
Masahito Kobayashi ◽  
Takenori Atsumi
Keyword(s):  
Control System ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Positioning Control ◽  
Adaptive Feedforward

Triple-Stage-Actuator System of Head-Positioning Control in Hard Disk Drives

2013 ◽  
Vol 49 (6) ◽  
pp. 2738-2743 ◽  
Author(s):  
Takenori Atsumi ◽  
Shigeo Nakamura ◽  
Masaru Furukawa ◽  
Irizo Naniwa ◽  
Junguo Xu
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Positioning Control ◽  
Head Positioning ◽  
Actuator System

Head-Positioning Control Using Resonant Modes in Hard Disk Drives

2005 ◽  
Vol 10 (4) ◽  
pp. 378-384 ◽  
Author(s):  
T. Atsumi ◽  
T. Arisaka ◽  
T. Shimizu ◽  
H. Masuda
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Positioning Control ◽  
Resonant Modes ◽  
Head Positioning

HEAD-POSITIONING CONTROL IN TRIPLE-STAGE-ACTUATOR ENTERPRISE HARD DISK DRIVES USING MIXED H2/H∞ SYNTHESIS METHODOLOGIES

2021 ◽  
pp. 1-8
Author(s):  
Zhi Chen ◽  
Prateek Shah ◽  
Roberto Horowitz
Keyword(s):  
Hard Disk Drives ◽  
Voice Coil Motor ◽  
Hard Disk ◽  
Data Driven ◽  
Disk Drives ◽  
Positioning Accuracy ◽  
Positioning Control ◽  
Model Based ◽  
Head Positioning ◽  
Resonance Frequencies

Abstract The recent rapid growth in the cloud storage industry has strongly increased the demand for high-capacity hard disk drives (HDDs). Increasing the areal density brings new challenges to the high-accuracy head-positioning control in the next generation HDD development. Triple-stage-actuator (TSA) system is one of the emerging technologies that can achieve higher bandwidth than that of a dual-stage-actuator (DSA) system and improve the track-following performance. In this paper, we focus on the track-following controller design for TSA system with one voice coil motor (VCM) and two piezoelectric (PZT) actuators. Two types of mixed H2/Hinf synthesis methodologies based on model-based optimization and data-driven optimization are proposed to design the track-following controller for the TSA system. The TSA system can increase the bandwidth of the servo system and decrease the sensitivity to disturbances at the low-frequency range. While increasing the stroke limitation and the resonance frequency of the micro-actuator, the 3sigma the position error signals (PES) is reduced. The data-driven controller can achieve comparable head-positioning accuracy to the model-based controller when it converges to a local optimal solution. The simulation results show the feasibility and effectiveness of the TSA systems with a tertiary PZT actuator. We also analyze the effects of stroke limitations and resonance frequencies of the second/third-stage PZT actuators on the head-positioning accuracy. The results might provide a guideline for the TSA mechanical design.

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