Design and Implementation of Dual-Stage Track-Following Control for Hard Disk Drives
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This paper discusses the design and implementation of two track-following controllers for dual-stage hard disk drive servo systems. The first controller is designed by combining an outer loop sensitivity-decoupling (SD) controller with an inner loop disturbance observer (DOB). The second is designed by combining mixed H2/H∞ synthesis techniques with an add-on integral action. The designed controllers were implemented and evaluated on a disk drive with a PZT-actuated suspension-based dual-stage servo system. Position error signal (PES) for the servo system was obtained by measuring the slider displacement with an LDV and injecting a simulated track runout.
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2007 ◽
Vol 15
(3)
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pp. 291-305
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2018 ◽
Vol 233
(5)
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pp. 582-590
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2011 ◽
Vol 2011
(0)
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pp. 110-112
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2006 ◽
Vol 42
(7)
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pp. 1896-1904
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2018 ◽
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