E-Book Overview
The second edition of this monograph provides a systematic treatment of the design of hard disk drive servo systems updated to reflect recent improvements in spindle speed and bit density and other changes in this fast-moving field. In particular, it focuses on the applications of some newly developed results in control theory, i.e., robust and perfect tracking control and composite non-linear feedback control which are suitable for track following and seeking respectively. Emphasis is placed on hard disk drive servo systems with single- or dual-stage actuation using a voice-coil-motor actuator enhanced in the latter case by the addition of a micro-actuator providing faster responses and therefore higher bandwidth in track following. Modeling and compensation of nonlinearities and friction in microdrives, disturbance rejection and resonance compensation are also addressed. The Linear Systems and CNF MATLAB® toolkits used to develop many of the results can be downloaded from the book's website.
E-Book Content
Advances in Industrial Control
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Ben M. Chen, Tong H. Lee, Kemao Peng and Venkatakrishnan Venkataramanan
Hard Disk Drive Servo Systems 2nd Edition
With 124 Figures
123
Ben M. Chen, PhD Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117576
Tong H. Lee, PhD Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117576
Kemao Peng, PhD Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117576
Venkatakrishnan Venkataramanan, PhD Mechatronics and Recording Channel Division Data Storage Institute DSI Building, 5 Engineering Drive 1 Singapore 117608
British Library Cataloguing in Publication Data Hard disk drive servo systems. - 2nd ed. - (Advances in industrial control) 1.Servomechanisms 2.Data disk drives - Design 3.Hard disks (Computer science) I.Chen, Ben M., 1963629.8’323 ISBN-10: 1846283043 Library of Congress Control Number: 2006921170 Advances in Industrial Control series ISSN 1430-9491 ISBN-10: 1-84628-304-3 2nd edition e-ISBN 1-84628-305-1 2nd edition ISBN-13: 978-1-84628-304-8 2nd edition ISBN 1-85233-