F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
322/15
F16F 15/18 (2006.01) F16F 15/02 (2006.01) G01H 1/10 (2006.01) H02P 9/10 (2006.01)
Patent
CA 1191546
17 ABSTRACT OF THE DISCLOSURE Signal conditioning apparatus for reducing the noise frequencies of a speed representing signal being fed into a compensator for compensating the output of a synchronous generator for the effect of torsional oscillation between masses in the main AC generator sys- tem. The signal conditioning apparatus includes two speed sensing transducers mounted 180° apart on opposite sides of a tooth gear wheel and summing the two FM output sig- nals from the transducers to eliminate odd harmonics of the synchronous frequency in FM noise due to eccentricity. The preferred embodiment of the invention reduces the remaining noise from the sensed speed signal by the use of a three-pole Butterworth low-pass filter in combination with a notch filter tuned to the turbine-generator syn- chronous frequency to thereby reduce the unwanted noise to a large degree while providing a minimal phase shift to the sensed speed signal. Another embodiment of the in- vention may be used to determine the machining accuracy of the toothed gear wheel.
406124
Kimmel Donald S.
South William H.
Oldham And Company
Westinghouse Electric Corporation
LandOfFree
Noise reduction means for a dynamic stabilizer for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Noise reduction means for a dynamic stabilizer for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction means for a dynamic stabilizer for... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1266749