Toward Efficient Op-Shock Simulation

This paper presents a new method to efficiently predict op-shock performance of hard disk drives (HDD). Structural components of HDD are modeled using state space formulation based on modes superposition principle. The air bearing is modeled as a non-linear spring dependent on slider's flying h...

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Bibliographic Details
Main Authors: Harmoko, H., Yap, F.F., Vahdati, N., Liu, M.
Format: Conference Proceeding
Language:English
Subjects:
Actuators
contact stiffness
Convergence
Damping
Electric shock
Equations
Hard disks
operating shock
Predictive models
quasi-static model
Shape
Space vector pulse width modulation
state space formulation
State-space methods
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Summary:This paper presents a new method to efficiently predict op-shock performance of hard disk drives (HDD). Structural components of HDD are modeled using state space formulation based on modes superposition principle. The air bearing is modeled as a non-linear spring dependent on slider's flying height and pitch angle; to obtain the air bearing stiffness the compressible Reynolds equation is evaluated in quasi-steady state and the squeeze term is approximated using viscous damping. Experimental results show that the method is reasonably accurate. The time needed for one 10-ms simulation run is only several minutes. Using this method some new design parameters, such as material proportional damping, are studied
DOI:10.1109/APMRC.2006.365933