Appeal No. 2006-0871
Application No. 10/678,799
determining a frequency spectral result of the armature
current signal of the motor in which the armature current signal
contains current ripples and interference;
determining a frequency spectral result of a voltage signal
of the motor in which the voltage signal contains the
interference;
determining a frequency spectral result of the current
ripples contained in the armature current signal based on
differences between the frequency spectral result of the armature
current signal and the frequency spectral result of the motor
voltage signal such that the determined frequency spectral result
of the current ripples contained in the armature current signal
is void of frequency components which are superimposed on the
armature current signal as the interference; and
determining the frequency of the current ripples contained
in the armature current signal from the determined frequency
spectral result of the current ripple contained in the armature
current signal.
The examiner relies on the following references:
Falk et al. (Falk) 3,935,512 Jan. 27, 1976
Periou et al. (Periou) 4,952,854 Aug. 28, 1990
Matsumoto 5,977,732 Nov. 02, 1999
Kane et al. (Kane) 6,038,532 Mar. 14, 2000
(filed Jul. 23, 1993)
Claims 1-3, 6, 7, 9-13 and 16-19 stand rejected under 35
U.S.C. § 103(a). As evidence of obviousness the examiner offers
Matsumoto in view of Falk and Kane with respect to claims 1-3, 6,
11-13 and 16, and Periou is added to this combination with
respect to claims 7, 9, 10 and 17-19.
Rather than repeat the arguments of appellant or the
examiner, we make reference to the briefs and the answers for the
respective details thereof.
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