Appeal No. 1999-1941
Application No. 08/629,700
commutation controller for a switched reluctance motor 10.
Thus, it would have been obvious ... to utilize Lyons et al
within a four quadrant srm as it is stated as known in the art."
Appellant argues, brief at page 5, that "an indication of rotor
position is obtained in each of the systems disclosed in the
Lyons et al. and the MacMinn et al. patents." Furthermore,
Appellant argues, id.,
that "neither Lyons et al. nor MacMinn et al. discloses or
suggests that it would be desirable or even possible to control
a switched reluctance machine without determining machine rotor
position."
In response, the Examiner analyzes Lyons and MacMinn on pages 5
and 6 of the Examiner answer and concludes, id. at page 6, that
"[a]s with the instant invention, a current detection is
provided to commutate the motor." Examiner further asserts,
id., that "[t]he instant invention detects the bus voltage 54
which compares this value with reference levels 76, 78, 80, 82
to determine current values I1-I5 which are provided to the
Finite State Machine 74 (see figure 4). Phase currents (not
labelled in figure 4) are also provided. The finite state
machine determines the state or quadrant of operation (see
5
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