Accurate measurement of power system frequency using a digital signal processing technique

1999 ◽  
Vol 48 (1) ◽  
pp. 75-81 ◽  
Author(s):  
T.S. Sidhu
Keyword(s):  
Signal Processing ◽  
Power System ◽  
Digital Signal Processing ◽  
Digital Signal ◽  
Processing Technique ◽  
Signal Processing Technique ◽  
System Frequency

Detecting Fatigue Cracks in Gears by Amplitude and Phase Demodulation of the Meshing Vibration

1986 ◽  
Vol 108 (2) ◽  
pp. 165-170 ◽  
Author(s):  
P. D. McFadden
Keyword(s):  
Signal Processing ◽  
Early Detection ◽  
Digital Signal Processing ◽  
Phase Modulation ◽  
Fatigue Cracks ◽  
Digital Signal ◽  
Processing Technique ◽  
Signal Processing Technique ◽  
Signal Average ◽  
Local Defects

A digital signal processing technique is proposed for calculating the amplitude and phase modulation of the tooth meshing vibration of a gear from the signal average of the vibration with application to the early detection of local defects such as fatigue cracks. The importance of phase modulation in the detection of defects is confirmed.

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