6
6-7
6-3 Notch Filter
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Applied Functions
6-3 Notch Filter
Outline of Operation
You can set up to 4 notch filters for the torque command.
If a ball screw or other controlled device causes resonance at a specific location, you can set
the resonance frequency using a notch filter to eliminate resonance.
A notch filter is used to eliminate a specified frequency component.
If machine resonance occurs, use this notch filter to eliminate resonance.
Depth=Fc/fw
Cut-off frequency Fc
Frequency Hz
Width fw
fw
0db
−3db
Notch filter 1 Notch filter 2
Machine resonance
Notch filter
Characteristics
after filtering
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