Title :
Servotrackwriter with improved positioning system
Author :
Baker, Bill R. ; Moraru, Alex
Author_Institution :
Phase Metrics, Fremont, CA, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
An optical noncontact method eliminates the resonances generated by mechanical interaction of the HDA arm with a conventional pushpin. Errors due to air turbulence in a laser interferometer are avoided by using an encoder with one nanometer resolution
Keywords :
hard discs; position control; servomechanisms; HDA arm; encoder; optical noncontact method; positioning system; pushpin; servotrackwriter; Actuators; Diode lasers; Laser beams; Manufacturing; Mirrors; Optical interferometry; Optical sensors; Resonance; Servomechanisms; Servomotors;
Journal_Title :
Magnetics, IEEE Transactions on
