High Bandwidth Design of Hard Disk Control System Using &lt;i&gt;H&lt;/i&gt;&lt;sub&gt;&amp;infin;&lt;/sub&gt; Control with Feedback Type Uncertainty

This paper presents a control design methodology for high‐precision positioning. In particular, the compensation for the effects of vibration modes and nonlinear friction on the positioning performance is taken into account in this methodology. In the controller design, the servo bandwidth of the feedback control loop should be expanded to compensate for nonlinear friction, while robust stability with respect to frequency variations in the vibration modes should be ensured. In this study, therefore, strain feedback for vibration modes is adopted to provide robustness with respect to frequency variations and to improve the disturbance suppression performance by expanding the bandwidth of a disturbance observer. This strain feedback is based on the use of a piezoelectric element. The efficiency of the proposed positioning control approach has been verified by conducting experiments using a prototype for industrial table drive systems. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 183(3): 46–55, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21306

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High‐precision positioning of table drive system using strain feedback and disturbance observer

Seki

Mochizuki

Iwasaki

2013

Electrical Engineering Japan

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Controller design for HDD benchmark problem using RNN-based reinforcement learning

Muto,

Uchimura

2023

IFAC-PapersOnLine

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Robust Vibration Suppression of Resonant Modes by Feedback Compensation Realized Using Allpass Filters

et al. 2009

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High Bandwidth Design of Hard Disk Control System Using <i>H</i><sub>∞</sub> Control with Feedback Type Uncertainty

Cited by 6 publications

References 2 publications

High‐precision positioning of table drive system using strain feedback and disturbance observer

High‐precision positioning of table drive system using strain feedback and disturbance observer

Controller design for HDD benchmark problem using RNN-based reinforcement learning

Robust Vibration Suppression of Resonant Modes by Feedback Compensation Realized Using Allpass Filters

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