NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Rotary encoding deviceA device for position encoding of a rotating shaft in which a polygonal mirror having a number of facets is mounted to the shaft and a light beam is directed towards the facets is presented. The facets of the polygonal mirror reflect the light beam such that a light spot is created on a linear array detector. An analog-to-digital converter is connected to the linear array detector for reading the position of the spot on the linear array detector. A microprocessor with memory is connected to the analog-to-digital converter to hold and manipulate the data provided by the analog-to-digital converter on the position of the spot and to compute the position of the shaft based upon the data from the analog-to-digital converter.
Document ID
19940011470
Acquisition Source
Headquarters
Document Type
Other - Patent Application
Authors
Leviton, Douglas B. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 6, 2013
Publication Date
February 25, 1993
Subject Category
Computer Programming And Software
Report/Patent Number
NAS 1.71:GSC-13556-1
Patent Application Number: US-PATENT-APPL-SN-022219
Patent Number: NASA-CASE-GSC-13556-1
Report Number: NAS 1.71:GSC-13556-1
Accession Number
94N15943
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-GSC-13556-1
Patent Application
US-PATENT-APPL-SN-022219

Related Records

There are no records associated with this record.
No Preview Available