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Title: Demodulation circuit for AC motor current spectral analysis

Abstract

A motor current analysis method for the remote, noninvasive inspection of electric motor-operated systems. Synchronous amplitude demodulation and phase demodulation circuits are used singly and in combination along with a frequency analyzer to produce improved spectral analysis of load-induced frequencies present in the electric current flowing in a motor-driven system.

Inventors:
 [1];  [2]
  1. (Oak Ridge, TN)
  2. (Knoxville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
867654
Patent Number(s):
4978909
Application Number:
07/401,728
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
demodulation; circuit; motor; current; spectral; analysis; method; remote; noninvasive; inspection; electric; motor-operated; systems; synchronous; amplitude; phase; circuits; singly; combination; frequency; analyzer; produce; improved; load-induced; frequencies; flowing; motor-driven; spectral analysis; electric current; electric motor; current flow; motor current; current flowing; analysis method; current analysis; electric motor-operated; current spectra; /324/

Citation Formats

Hendrix, Donald E., and Smith, Stephen F. Demodulation circuit for AC motor current spectral analysis. United States: N. p., 1990. Web.
Hendrix, Donald E., & Smith, Stephen F. Demodulation circuit for AC motor current spectral analysis. United States.
Hendrix, Donald E., and Smith, Stephen F. Tue . "Demodulation circuit for AC motor current spectral analysis". United States. https://www.osti.gov/servlets/purl/867654.
@article{osti_867654,
title = {Demodulation circuit for AC motor current spectral analysis},
author = {Hendrix, Donald E. and Smith, Stephen F.},
abstractNote = {A motor current analysis method for the remote, noninvasive inspection of electric motor-operated systems. Synchronous amplitude demodulation and phase demodulation circuits are used singly and in combination along with a frequency analyzer to produce improved spectral analysis of load-induced frequencies present in the electric current flowing in a motor-driven system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {12}
}

Patent:

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