Reduction of flow-induced suspension vibrations in a hard disk drive by dual-stage suspension control
Teerhuis, A.P.; Cools, S.J.M.; De Callafon, R.A.
Magnetics, IEEE Transactions on
Volume 39, Issue 5, Sept. 2003 Page(s): 2237 - 2239
Digital Object Identifier   10.1109/TMAG.2003.815441
Summary: A control design methodology is proposed to control an active dual-stage suspension for the reduction of flow-induced vibrations (windage) in a hard disk drive. The design of the controller uses dynamical models of both the suspension and the stochastic behavior of the windage to design a low third-order discrete-time feedback controller to reduce windage-induced track misregistration. Experimental results show that nonrepeatable runout errors due to windage are reduced by an order of a magnitude.

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