Title :
A servo method for a large-capacity floppy disk drive with downward compatibility
Author :
Sakai, Y. ; Takada, Y. ; Yamada, T. ; Sugaya, T.
Author_Institution :
Toshiba Res. & Dev. Center, Kawasaki, Japan
fDate :
9/1/1989 12:00:00 AM
Abstract :
A novel servo method, in which a linear voice coil motor (LVCM) with a simple optical scale is controlled by a μCPU, has been developed. It has a downward read-compatible mode with 135 tracks/in (TPI) and a large-capacity 16-MByte mode with 542 TPI, and it achieves an average seeking time of 25 ms. The drive is expected to be used in such applications as peripheral memories and hard-disk-drive back-ups
Keywords :
floppy discs; 16 MByte; 25 ms; LVCM; average seeking time; downward read-compatible mode; hard-disk-drive back-ups; large-capacity floppy disk drive; linear voice coil motor; optical scale; peripheral memories; servo method; Coils; Control systems; Drives; Floppy disks; High speed optical techniques; Optical control; Optical sensors; Servomechanisms; Servomotors; Velocity control;
Journal_Title :
Magnetics, IEEE Transactions on
