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An Investigation Into the Use of Four-Bar Linkage Mechanism as Actuator for Hard-Disk Drive

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3 Author(s)
Djati Wibowo Djamari$^{1}$ School of Mechanical and Aerospace Engineering, Division of Engineering Mechanics,, Nanyang Technological University,, Singapore ; Chong Jin Ong ; Fook Fah Yap

The actuator of a hard disk drive (HDD) requires a high bandwidth for fast response to achieve higher recording density. The bandwidth is governed by several factors with the main one being the first in-plane natural frequency of the actuator arm. This paper investigates a new design that can achieve higher actuator bandwidth without sacrificing the out-of-plane stiffness. The design is structurally different from a conventional actuator arm (standard HDD single-stage actuator) and achieves improvement in the first in-plane natural frequency.

Published in:

IEEE Transactions on Magnetics  (Volume:49 ,  Issue: 6 )