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Erschienen in: Microsystem Technologies 9-10/2012

01.09.2012 | Technical Paper

Robust optimal design of the FDBs in a HDD to reduce NRRO and RRO

verfasst von: Jihoon Lee, Gunhee Jang, Heonjeong Ha

Erschienen in: Microsystem Technologies | Ausgabe 9-10/2012

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Abstract

This research proposes a robust optimal design methodology of the FDBs in a HDD to reduce RRO and NRRO. The critical mass, which determines the dynamic behavior of rotor-bearing system, was selected as an objective function, and the constraint equations were the friction torque of the FDBs, and the stiffness and damping coefficients related with under-damped vibration modes. Ten major design variables of the FDBs were chosen in this optimization problem. The steady-state whirl radius and the shock response at half-speed whirl of the rotating rigid spindle-bearing system were evaluated as RRO and NRRO, respectively. RRO and NRRO of the optimal design were compared with those of conventional one, and it showed that the proposed method could effectively reduce RRO and NRRO.

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Literatur
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Metadaten
Titel
Robust optimal design of the FDBs in a HDD to reduce NRRO and RRO
verfasst von
Jihoon Lee
Gunhee Jang
Heonjeong Ha
Publikationsdatum
01.09.2012
Verlag
Springer-Verlag
Erschienen in
Microsystem Technologies / Ausgabe 9-10/2012
Print ISSN: 0946-7076
Elektronische ISSN: 1432-1858
DOI
https://doi.org/10.1007/s00542-012-1539-4

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