Document Type
Patent
Publication Date
September 2005
Patent Number
6940277
Abstract
An encoder (10) for a nanopostioner (24) includes a strip of magnetic bits (18) for producing discrete magnetic fields and a giant magnetoresistor (GMR) (14) which changes in electrical resistance in response to changes in the magnetic fields. The GMR (14) is connected to a mass (12) which moves along a path proximate to the strip of magnetic bits (18). A voltage sensor (20) is connected to the GMR (14) to produce digital signals based on the changes in electrical resistance of the GMR (14). A processor (22) calculates the position of the nanopositioner (24) based on the digital signals.
Application Number
10/651,160
Recommended Citation
Fries, David P., "Giant magnetoresistance based nanopositioner encoder" (2005). USF Patents. 715.
https://digitalcommons.usf.edu/usf_patents/715
Assignees
University of South Florida
Filing Date
08/28/2003
Primary/U.S. Class
324/207
