Please use this identifier to cite or link to this item:
Title: High bandwidth macro/micro-actuation for hard-disk drive
Authors: Jianxu, Ma
Ang Jr., Marcelo H. 
Issue Date: 2000
Citation: Jianxu, Ma, Ang Jr., Marcelo H. (2000). High bandwidth macro/micro-actuation for hard-disk drive. Proceedings of SPIE - The International Society for Optical Engineering 4194 : 94-102. ScholarBank@NUS Repository.
Abstract: The track density of hard disk drives had been increasing of 30%/year in these last years. The increase in bandwidth is limited by the presence of mechanical resonance modes and other nonlinear in the voice coil motor (VCM) actuators. One approach to overcoming the problem is by using a dual-stage servo mechanism. Dual stage actuator systems composed of a micro actuator and a conventional actuator (VCM)-macro actuator may enable such high track densities to be attained. In this paper, a novel piezoelectric microactuator was successfully designed and mounted on the suspension in hard disk drives. The microactuator is based on the deformation in piezoelectric effect, and drives the head suspension assembly. The paper describes the structure of macro/micro actuators, its principles of operation and mechanical characteristics. The actuators system in hard disk has a high bandwidth, simple structure and low cost.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
ISSN: 0277786X
DOI: 10.1117/12.403689
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Dec 11, 2019


checked on Dec 11, 2019

Page view(s)

checked on Dec 15, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.