Design and characterization of miniature fluid dynamic bearing using novel multi-step elliptical grooves

作者：Chen Chien Yu; Liu Chien Sheng^*; Li Yu Cheng

来源：Microsystem Technologies, 2015, 21(1): 91-100.

DOI：10.1007/s00542-013-2023-5

This paper investigates the design and characterization of a miniature fluid dynamic bearing using novel multi-step elliptical grooves for small-form-factor data storage applications and miniature fan motors. In contrast to conventional herringbone-grooved cylindrical journal bearings (HGJBs), the proposed journal bearing contains a single set of multi-step elliptical grooves (EGJB). The performance of the proposed multi-step EGJB is characterized numerically using proprietary flow field analysis software. In addition, to reduce the number of optimal full-factorial experimental design tests (3(23)), the Taguchi parameter design methodology is used to find out the optimal design parameters of the multi-step EGJB. Results show that compared to the conventional HGJB presented by the current group in a previous study, the proposed multi-step EGJB improves the load capacity. Consequently, the proposed motor represents another solution for both existing and emerging miniaturized spindle motor applications.

• 出版日期2015-1
• 单位中央民族大学