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Title: A new approach to the design of mode switching control in hard disk drive servo systems
Authors: Venkataramanan, V. 
Chen, B.M. 
Lee, T.H. 
Guo, G.
Keywords: Hard disk drives
Mode switching control
Robust control
Servo systems
Target tracking
Issue Date: Sep-2002
Citation: Venkataramanan, V., Chen, B.M., Lee, T.H., Guo, G. (2002-09). A new approach to the design of mode switching control in hard disk drive servo systems. Control Engineering Practice 10 (9) : 925-939. ScholarBank@NUS Repository.
Abstract: In a modern large-capacity magnetic hard disk drive (HDD), both fast track seeking and perfect positioning of the read/write head are required. Mode switching control (MSC) approaches are widely used to meet these requirements. This paper proposes a new approach in designing MSC with an application to HDD servo systems. The proposed scheme uses a proximate time-optimal servomechanism in the track seeking mode, and a robust perfect tracking (RPT) controller in the track following mode. Unlike the conventional MSC approaches, the new method does not require an initial value compensation during mode switching. This is because the RPT controller in the second stage is capable of rendering the Lp-norm (1≤p
Source Title: Control Engineering Practice
ISSN: 09670661
DOI: 10.1016/S0967-0661(02)00037-0
Appears in Collections:Staff Publications

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