Title :
Dynamic modeling of the resistance heater element in thermal flying height control sliders
Author :
Boettcher, U. ; Lacey, C.A. ; Li, H. ; Amemiya, K. ; de Callafon, R.A. ; Talke, F.E.
Author_Institution :
Center for Magn. Recording Res., Univ. of California, San Diego, La Jolla, CA, USA
Abstract :
The dynamic model of a resistance heater element in a thermal flying height control slider is estimated based on step response measurements. The head-disk clearance is measured in two different ways: by only using the servo sectors and by only using the data sectors. A realization algorithm is used for obtaining a 2nd order discrete-time model of the heater element. Based on the model, the feasibility of high-bandwidth dynamic flying height control is discussed.
Keywords :
disc drives; discrete time systems; hard discs; position control; servomechanisms; temperature control; data sectors; discrete-time model; head-disk clearance; resistance heater element; servo sectors; step response measurement; thermal flying height control slider; Dynamic Modeling; Realization Algorithm; Thermal Flying height control;
Conference_Titel :
APMRC, 2010 Digest
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-8103-3
