Design and dynamic analysis of suspension for dual actuator type HDD

Joon Hyun Yoon, Hyun Seok Yang, Young Pil Park

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The track density of HDD is increasing rapidly as the recording density drastically increases, which leads to the need for a higher servo bandwidth. To this end, a dual actuator system for HDD has been suggested as a possible solution. Furthermore, the suspension resonance frequency in the radial access direction is becoming a more important factor for the servo bandwidth increase. However, the improvement of these frequencies may affect the shock resistance performance and spring constant. In this work, we have investigated a suspension design scheme possessing a microactualor as a dual actuator and also achieving high-mechanical resonance frequencies, shock resistance characteristics, and a low-spring constant. Using finite element analysis, the design parameters, which play key roles for dynamic characteristics of a suspension, are investigated. Design parameters are deduced based on physical insight and obsen-ations. It is confirmed that the proposed suspension has the capability affine tracking motion as a microactuator, due to its hinge structure on the spring region, and achieves higher mechanical resonance frequencies in the 2nd torsion mode and sway mode with a high-shock resistance and a low-spring constant.

Original languageEnglish
Pages (from-to)47-51
Number of pages5
JournalJournal of Information Storage and Processing Systems
Issue number1-2
Publication statusPublished - 2001 Jan

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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