Compensation and identification for external disturbances in head positioning systems of hard disk drives based on a data-based design method. (15th January 2019)

• Record Type: Journal Article
• Authors: Yabui, Shota
• Is Part Of: Mechanical systems and signal processing. Volume 115(2019)
• Page Start: 434
• Page End: 449
• Publication Date: 2019-01-15
• Subjects: Hard disk drives -- Positioning control -- Data-based controller design -- Disturbance compensation -- Support vector machine; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2018.06.001
• Languages: English
• ISSNs: 0888-3270

Abstract

Highlights: In hard disk drives (HDDs), a data-based design method is proposed for disturbances compensation. The proposed method doesn't need mathematical models of external disturbances. The proposed method can decide desired characteristics of the controller from experimental data. The characteristics of the external disturbances can be identified by using the design results. The designed controller can improve head positioning accuracy in the head positioning systems. Abstract: This paper introduces a compensation and identification method for external disturbances in head positioning systems of hard disk drives (HDDs). For increasing a data capacity of HDDs, head positioning control system must compensate for any disturbance which worsen positioning accuracy. However, the traditional model-based controller design method mayn't design a controller for the disturbances compensation. Because, it is difficult to create a mathematical model of the external disturbances. The proposed method can design the controllers without the mathematical model. Moreover, it can identify the characteristics of external disturbances simultaneously. It's effectiveness has been verified by experiments in the head positioning control.