Control of a Micro-Actuator for the Hard Disk Drive using Self-Sensing Actuation

使用自感致动控制硬盘驱动器微致动器

• 批准号: 17560224
• 负责人: SASAKI Minoru
• 金额: $ 2.11万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560224/
• 关键词: Piezoelectric Actuator; Self-Sensing Actuation; Hard disk drive; Direct velocity feedback; Positive position feedback; Neural Network; PPF Filter; Position control; マイクロアクチュエータ; アクティブ振動制御; 2自由度制御系; 先端位置追従制御; セルフゲインチューニング; 低域通過擬似逆システム; 2ステージ制

A micro-actuator will be important technology to achieve high-speed and highly precise head positioning control for hard disk drives. In conventional hard disk drives, a voice-coil motor (VCM) actuates the suspension, positioning the slider over the desired data track. Structural resonance modes of the head stack and suspension assembly are one of the major limiting factors for achieving higher head-positioning servo performance in hard disk drives. A suspension assembly in the hard disk drive (HDD) can be excited by the airflow generated from a high-speed rotating magnetic disk, a non-circular track motion of the head/slider, which is caused by the resonance vibration modes of components, and other external disturbances. A servo system that can cope with these problems requires a very high servo bandwidth and position error signal sampling frequency. The sampling frequency of the position error signal is limited by the data storage efficiency of the conventional servo system. Active c … More ontrol of these problems and the vibration of components require additional vibration sensors and actuators. Many researchers have proposed the addition of extra vibration sensors and actuators. For example, the use of a piezoelectric actuator to actuate the suspension for the dual-stage servo system has been proposed, whereby one of the two piezoelectric strips is used as a vibration sensor and the other is used as the actuator. However, using only half of the conventional micro-actuator pair as the sensor decreases the usual effect of the actuator by half and is not efficient.In this project, self-sensing control of a micro-actuator for the hard disk drive is presented. The micro-actuator is a suspension driving type. The micro-actuator uses a PZT actuator pair, installed on the assembly of the suspension. The self-sensing micro actuator can be used to form a combined actuation and sensing mechanism. Feedback control results of direct velocity feedback (DVR) and direct position feedback (DPF) and positive position feedback (PPF) are presented and compared. The objective of the experiments are to verify the feasibility of these self-sensing approaches as a vibration suppression control of the micro-actuator. Artificial neural networks can be used effectively for the identification and control of nonlinear dynamical systems, such as a flexible micro-actuator with a suspension assembly and a self-sensing system. In the present project, in order to solve these problems and improve the performance of the dual-stage servo system for the HDD, a self gain tuning neural-network control has been proposed by utilizing the self-sensing sensors to damp the suspension assembly vibrations. Less

微驱动器将是实现高速高精度硬盘磁头定位控制的重要技术。在传统的硬盘驱动器中，音圈电机（VCM）驱动悬架，将滑块定位在所需的数据磁道上。磁头组和悬架组件的结构共振模式是在硬盘驱动器中实现更高磁头定位伺服性能的主要限制因素之一。硬盘驱动器（HDD）中的悬挂组件可以被高速旋转的磁盘产生的气流、由部件的共振振动模式引起的磁头/滑块的非圆形轨道运动以及其他外部干扰所激励。能够应对这些问题的伺服系统需要非常高的伺服带宽和位置误差信号采样频率。位置误差信号的采样频率受到传统伺服系统的数据存储效率的限制。有源c ...更多信息 控制这些问题和部件的振动需要附加的振动传感器和致动器。许多研究人员提出了增加额外的振动传感器和执行器。例如，已经提出了使用压电致动器来致动用于双级伺服系统的悬架，其中两个压电带中的一个用作振动传感器，另一个用作致动器。然而，仅使用传统的微致动器对的一半作为传感器，减少了一半的致动器的通常效果，是不是efficient.In本项目中，自感知控制的微致动器的硬盘驱动器。微执行器是悬浮驱动型。该微驱动器采用PZT驱动器对，安装在悬架总成上。自感测微致动器可用于形成组合的致动和感测机构。给出了直接速度反馈（DVR）、直接位置反馈（DPF）和正位置反馈（PPF）的反馈控制结果，并进行了比较。实验的目的是验证这些自感知方法作为微致动器的振动抑制控制的可行性。人工神经网络可以有效地用于非线性动力系统的辨识和控制，例如具有悬挂组件的柔性微致动器和自感测系统。为了解决这些问题，提高硬盘驱动器的双级伺服系统的性能，本项目提出了一种自增益调整神经网络控制器，利用自感知传感器来阻尼悬挂组件的振动。少

项目成果

Control of a Self-Sensing Micro-Actuator using Neural Networks

使用神经网络控制自感知微执行器

• 发表时间: 2006
• 期刊: Proceedings of the MAGDA Conference in Kiryu
• 作者: Hiroyuki Yamada;Minoru Sasaki;Yoonsu Nam;Satoshi Ito
• 通讯作者: Satoshi Ito

ニューラルネットワークによるセルフセンシングマイクロアクチュエータの制御

通过神经网络控制自感知微执行器

• 发表时间: 2006
• 期刊: 日本AEM学会 第15回MAGDAコンファレンスin桐生 電磁力現象及び電磁力に関するコンファレンス講演論文集
• 作者: 山田博行;佐々木実;南潤水;伊藤聡
• 通讯作者: 伊藤聡

セルフセンシングアクチュエーションを用いたHDD用マイクロアクチュエータの制御

使用自感应驱动控制 HDD 微驱动器

• 发表时间: 2006
• 期刊: 日本AEM学会第15回MAGDAコンファレンスin桐生電磁力現象及び電磁力に関するコンファレンス講演論文集
• 作者: 藤原 孝次;佐々木 実;伊藤 聡;山田 博行
• 通讯作者: 山田 博行

Control of a micro-actuator for hard disk drives using self-sensing actuator

使用自感应执行器控制硬盘驱动器的微执行器

• 发表时间: 2006
• 期刊: International Journal of Applied Electromagnetics and Mechanics Vol. 24・No. 3, 4
• 作者: Hiroyuki Yamadaa;Minoru Sasaki;Yoonsu Nam
• 通讯作者: Yoonsu Nam

A Self-Sensing Control of Micro-Actuator for Hard Disk Drives

硬盘驱动器微执行器的自感知控制

• 发表时间: 2005
• 期刊: Journal of the Japan Society of Applied Electromagnetics and Mechanics Vol.13, No.2
• 作者: Hiroyuki Yamada;Minoru Sasaki;Yoonsu Nam
• 通讯作者: Yoonsu Nam