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Power-Conserving Stepping-Motor Drive CircuitsTwo improved drive circuits for sinusoidally commutated stepping motor include feedback loops reducing unnecessary consumption of power by reducing drive-current amplitude, I, when motor operates under light load. Basic design strategy attempts to supply only little more current than minimum needed to overcome friction in lightly loaded condition. In this sinusoidally commutated two-phase stepping motor, magnetic field generated by drive currents in phase-A and phase-B stator windings urges rotor toward commanded angle x.
Document ID
19940000360
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Nola, Frank J. (NASA Marshall Space Flight Center, Huntsville, AL.)
Howard, David E. (NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 16, 2013
Publication Date
July 1, 1994
Publication Information
Publication: NASA Tech Briefs
Volume: 18
Issue: 7
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
MFS-28854
Accession Number
94B10360
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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