Robust Optimal Design of The FDBs in a HDD to Reduce NRRO and RRO
- Title
- Robust Optimal Design of The FDBs in a HDD to Reduce NRRO and RRO
- Author
- 장건희
- Keywords
- Hard Disk Drive; Journal Bearing; Friction Torque; Thrust Bearing; Dynamic Coefficient
- Issue Date
- 2011-06
- Publisher
- SPRINGER
- Citation
- MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS, 18, 9-10, 1335-1342
- 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.
- URI
- https://link.springer.com/article/10.1007/s00542-012-1539-4
- ISSN
- 0946-7076
- DOI
- 10.1007/s00542-012-1539-4
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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