Title :
Design and optimization of a dual-stage high bandwidth piggy-back electromagnetic milli-actuator
Author :
Lin, H. ; Ong, E.H.
Author_Institution :
Data Storage Inst., Singapore
fDate :
9/1/1999 12:00:00 AM
Abstract :
A novel high bandwidth secondary-stage milli-sized electromagnetic actuator is proposed and reported. It is constructed at the tip of the carriage arm of a conventional actuator system. The electromagnetic characteristics and dynamic performance of the piggy-back milli-actuator were investigated and are reported. The study shows that the head positioning system supported by the proposed dual-stage milli-electromagnetic actuator has achieved high primary resonances, lateral rigid body mode at 18 kHz and torsional mode at 25 kHz, and can have a significantly wide servo bandwidth
Keywords :
disc drives; electromagnetic actuators; frequency response; hard discs; magnetic heads; microactuators; position control; servomechanisms; actuator design; dual-stage; dynamics performance; frequency response; head positioning system; high bandwidth; high primary resonances; lateral rigid body mode; magnetic recording; milli-sized electromagnetic actuator; optimization; piggyback electromagnetic milli-actuator; secondary-stage; torsional mode; wide servo bandwidth; Actuators; Bandwidth; Coils; Couplers; Design optimization; Electromagnetic forces; Magnetic heads; Resonance; Servomechanisms; Suspensions;
Journal_Title :
Magnetics, IEEE Transactions on
