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Title: Modeling and control of hard disk drive in mobile applications
Keywords: Hard disk drive (HDD), hysteresis friction nonlinearity, adaptive control, neural network (NN)
Issue Date: 9-Dec-2009
Citation: PHYO PHYO SAN (2009-12-09). Modeling and control of hard disk drive in mobile applications. ScholarBank@NUS Repository.
Abstract: In this thesis, a brief introduction of HDD servo technology and the prevalent trend in hard disk design towards smaller hard disks with increasingly larger capacities are presented. Followed by a brief overview of HDD head positioning servomechanism, the fundamental components of an HDD servo system are introduced. A comprehensive studies of the commonly used classical friction models including both static and dynamic models are presented for comparison and controller design. Besides, a
complete model of the VCM actuator including pivot friction hysteresis nonlinearity is obtained through a careful examination of the configuration and structure of actual system and through a thorough analysis of its physical effects in frequency domain response. In addition, a systematic treatment of adaptive neural network (NN) friction compensation techniques is presented in both theoretical and experimental aspects in order to achieve high precision motion control.
Appears in Collections:Master's Theses (Open)

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