AFC with gain adjustment in control system in HDDs for compensation of speaker‐induced vibration

AFC with gain adjustment in control system in HDDs for compensation of speaker‐induced vibration
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AFC 在 HDD 控制系统中具有增益调节功能,用于补偿扬声器引起的振动

DOI:
10.1002/tee.23112
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发表时间:
2020
影响因子:
1
通讯作者:
Inoue Tsuyoshi
Inoue Tsuyoshi
中科院分区:
工程技术4区
文献类型:
--
作者:
Yabui Shota;Atsumi Takenori;Inoue Tsuyoshi

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近年来,硬盘驱动器(HDD)主要用于数据服务器。在数据服务器上,控制系统的磁头定位精度受到各种外部振动的影响。定位精度的恶化导致数据服务器中数字数据传输速率的下降。为了补偿硬盘磁头定位系统的外部振动,在这项研究中,作者开发了一种具有增益学习功能的自适应前馈控制(AFC)。所提出的 AFC 可以更新控制系统的特性,以实时补偿外部振动。本文报告了实验结果,其中采用所提出的 AFC 来补偿由于数据服务器的嗡嗡声而引起的扬声器振动,并作为系统中发生的任何问题的通知。值得注意的是,拟议的 AFC 可以补偿嗡嗡声引起的振动。此外,实时更新的控制参数可用于感知系统中蜂鸣声的发生。 © 2020 日本电气工程师协会。由约翰·威利父子公司出版
In recent years, hard disk drives (HDDs) have been primarily used in data servers. At the data servers, the head positioning accuracy of control systems is influenced by various external vibrations. The deterioration of the positioning accuracy causes degradation of the digital data transfer rate in the data server. To compensate for the external vibrations in the head positioning systems of HDDs, in this research, the authors developed an adaptive feedforward control (AFC) with a gain learning function. The proposed AFC can update the characteristics of the control system to compensate for the external vibrations in real‐time. This paper reports on the results of experiments in which the proposed AFC is employed to compensate for the speaker‐induced vibration due to buzzing of the data server, implemented to act as notification for any issues occurring in the system. It was noted that the proposed AFC can compensate for the vibrations caused by the buzzing. Moreover, the control parameters updated in real‐time can be used to sense the occurrence of buzzing in the system. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
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