Title :
Frequency characteristics of stiffness and damping effect of magnetic fluid bearing
Author :
Miwa, M. ; Harita, K. ; Kaneko, R. ; Ishzaki, H.
Author_Institution :
Dept. of Opto-Mech., Wakayama Univ., Japan
Abstract :
In this study, we measured damping characteristics and frequency characteristics of magnetic fluid bearing spindles using a high-frequency vibration base by a piezo actuator. Using the high-frequency vibration base, high frequency excitation was added to magnetic fluid bearing spindles mounted on the vibration base, and we proved that magnetic fluid bearing spindles have effective damping. Also the damping effect became larger with higher spindle rotational speed.
Keywords :
damping; disc drives; machine bearings; magnetic fluids; piezoelectric actuators; vibrations; damping; disk drive; high frequency excitation; magnetic fluid bearing; magnetic recording; piezoelectric actuator; spindle; stiffness; vibration base; Ball bearings; Damping; Disk drives; Disk recording; Frequency measurement; Magnetic heads; Magnetic liquids; Magnetic recording; Optical recording; Vibration measurement;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location :
Tokyo, Japan
Print_ISBN :
0-7803-6254-3
DOI :
10.1109/APMRC.2000.898941
