Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2008-03-11
2008-03-11
Leykin, Rita (Department: 2837)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S057000, C702S059000, C702S183000, C702S189000, C702S151000, C702S150000, C318S432000
Reexamination Certificate
active
11110697
ABSTRACT:
In a resolver digital converter comprising a resolver, a resolver digital conversion part, and an excitation signal generation part, the resolver digital converter for inputting an excitation signal generated in the excitation signal generation part to the resolver and inputting resolver signals outputted from the resolver to the resolver digital conversion part, a locus in which amplitude of a sine component signal among the resolver signals sin(θ), cos(θ) outputted from the resolver is plotted as the ordinate axis and amplitude of a cosine component signal is plotted as the abscissa axis is approximated by a polygon and when the locus matches with sides of the approximated polygon, it is determined that the resolver is in a normal state and when the locus does not match, it is determined that the resolver is in a failure state.
REFERENCES:
patent: 4864284 (1989-09-01), Crayton et al.
patent: 5179515 (1993-01-01), Lunz et al.
patent: 5295510 (1994-03-01), Bolling et al.
patent: 6161407 (2000-12-01), Meisser
patent: 6205009 (2001-03-01), Clark et al.
patent: 6389373 (2002-05-01), Ohya
patent: 6472841 (2002-10-01), Piedl et al.
patent: 6556937 (2003-04-01), Byers
patent: 6577957 (2003-06-01), Fujimoto et al.
patent: 6925401 (2005-08-01), Kameya
patent: 9-280890 (1997-10-01), None
patent: 2001-264114 (2001-09-01), None
patent: 3216491 (2001-10-01), None
AU6802 Catalogue, Tamagawa Seiki Co., ltd.
Horikoshi Atsushi
Kanekawa Nobuyasu
Otsuka Tetsuro
Sasaki Shoji
Leykin Rita
NSK Ltd.
NSK Steering Systems Co., Ltd.
Sughrue & Mion, PLLC
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