Title :
A low-turbulence-high-bandwidth actuator for 3.5" hard disk drives
Author :
Ong, Eng Hong ; He, Zhimin ; Chen, Ruifeng ; Qian, Hua ; Guo, Guoxiao
Author_Institution :
Data Storage Inst., Singapore
fDate :
9/1/2000 12:00:00 AM
Abstract :
To achieve high TPI (tracks per inch) for hard disk drives, the actuator/suspension assembly must have high bandwidth and induce less air turbulence [therefore, lower TMR (track misregistration)]. In this paper; a systematic way of estimating the optimal arm length of an actuator to achieve high bandwidth is proposed. Also, alternative cross sections for the actuator arms are proposed for higher bandwidth and the reduction of air turbulence. Experimental results are presented for verification purposes
Keywords :
disc drives; electric actuators; hard discs; sensitivity analysis; turbulence; 3.5 in; actuator/suspension assembly; air turbulence; hard disk drives; low-turbulence-high-bandwidth actuator; optimal arm length; track misregistration; tracks per inch; verification; Actuators; Arm; Assembly; Bandwidth; Data communication; Hard disks; Helium; Magnetic levitation; Resonance; Sensitivity analysis;
Journal_Title :
Magnetics, IEEE Transactions on
