The Flying Height Control with a Switched Controller for Data Storage Devices

Abstract

This paper considers the flying height control problem for data storage devices using a switched controller. First, a set of switched -parameterized stabilizing controllers is constructed. Then a sufficient regulation condition for the switched system is obtained, and a regulator synthesis method is derived based on solving a set of properly formulated linear matrix inequalities. Finally, the proposed regulator design method is evaluated on an experimental setup motivated by the flying height regulation problem in data storage devices