Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Reexamination Certificate
2007-05-14
2010-11-16
Benson, Walter (Department: 2837)
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
C318S605000, C318S652000, C318S400390
Reexamination Certificate
active
07834576
ABSTRACT:
Apparatus and methods are provided for diagnosing faults in multiple, associated motor-resolver systems. One apparatus includes a swapping circuit coupling a first resolver to a first or second decoder, and a swapping circuit coupling a second resolver to the first or second decoder. One method includes applying a signal from a resolver to a first decoder to determine that the first decoder is malfunctioning if the first decoder continues to generate a fault signal, and applying a signal from a different resolver to a second decoder to determine that a motor associated with the first decoder is malfunctioning if the second decoder generates a fault signal. Another method includes transmitting a signal from a resolver to first and second decoders, transmitting a signal from a different resolver to the first and second decoders, and determining if the first decoder, second decoder, a first motor, or a second motor is malfunctioning.
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Chinese Office Action issued on Jun. 9, 2010, for Application No. 200810100228.
Fu David T
Wang Wei D.
Benson Walter
GM Global Technology Operations Inc.
Paul Antony M
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