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Digital servo controllerA system, for generating a signal to control the rotation of a shaft supporting an antenna so that the antenna is rotated the shortest angular distance from a present angular position to a new desired angular position, was described. The system comprises a shaft encoder which generates a digital encoder signal indicating the present position of the shaft. A command signal is compared with the encoder signal to produce an analog signal for rotating the antenna. An error signal is produced for controlling the direction of rotation of the antenna.
Document ID
19740021443
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Byrne, F. (NASA John F. Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
September 3, 2013
Publication Date
July 30, 1974
Subject Category
Thermodynamics And Combustion
Report/Patent Number
Patent Number: NASA-CASE-KSC-10769-1
Patent Application Number: US-PATENT-APPL-SN-374583
Patent Number: US-PATENT-3,826,964
Accession Number
74N29556
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-KSC-10769-1|US-PATENT-3,826,964
Patent Application
US-PATENT-APPL-SN-374583

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