NDLI: Magnetic bearings for a spaceflight optical disk recorder

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Magnetic bearings for a spaceflight optical disk recorder

Content Provider	NASA Technical Reports Server (NTRS)
Author	Hockney, Richard Gondhalekar, Vijay Hawkey, Timothy
Copyright Year	1991
Description	The development and testing of a magnetic bearing system for the translator of the read/write head in a magneto-optic disk drive are discussed. The asymmetrical three-pole actuators with permanent magnet bias support the optical head, and its tracking and focusing servos, through their radial excursion above the disk. The specifications for the magnetic bearing are presented, along with the configuration of the magnetic hardware. Development of a five degree of freedom collision model is examined which allowed assessment of the system response during large scale transients. Experimental findings and the results of performance testing are presented, including the roll-off of current-to-force due to eddy current loss in the magnetic materials.
File Size	526859
Page Count	15
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910011882
Archival Resource Key	ark:/13960/t6062g51s
Language	English
Publisher Date	1991-03-01
Access Restriction	Open
Subject Keyword	Spacecraft Design, Testing And Performance Actuators Degrees of Freedom Performance Tests Bias Permanent Magnets Magnetic Bearings Space Flight Recording Instruments Optical Disks Losses Magneto-optics Asymmetry Servomotors Eddy Currents Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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