Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter
Abstract
The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).
- Inventors:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 864845
- Patent Number(s):
- 4426620
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- analog; quadrature; signal; phase; angle; data; conversion; digitizer; counter; phi; pair; signals; digitally; encoded; time; basis; fractional; rotational; excursions; rotations; form; cos; common; singularly; desired; required; optionally; digital-to-analog; converter; follow; outputs; provide; output; signal output; quadrature phase; phase angle; analog signal; quadrature signals; digital-to-analog converter; time basis; analog converter; quadrature signal; digitally encoded; /324/327/
Citation Formats
Buchenauer, C Jerald. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter. United States: N. p., 1984.
Web.
Buchenauer, C Jerald. Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter. United States.
Buchenauer, C Jerald. Sun .
"Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter". United States. https://www.osti.gov/servlets/purl/864845.
@article{osti_864845,
title = {Analog quadrature signal to phase angle data conversion by a quadrature digitizer and quadrature counter},
author = {Buchenauer, C Jerald},
abstractNote = {The quadrature phase angle .phi.(t) of a pair of quadrature signals S.sub.1 (t) and S.sub.2 (t) is digitally encoded on a real time basis by a quadrature digitizer for fractional .phi.(t) rotational excursions and by a quadrature up/down counter for full .phi.(t) rotations. The pair of quadrature signals are of the form S.sub.1 (t)=k(t) sin .phi.(t) and S.sub.2 (t)=k(t) cos .phi.(t) where k(t) is a signal common to both. The quadrature digitizer and the quadrature up/down counter may be used together or singularly as desired or required. Optionally, a digital-to-analog converter may follow the outputs of the quadrature digitizer and the quadrature up/down counter to provide an analog signal output of the quadrature phase angle .phi.(t).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}