Notch Filters - Omron R88D-KN series User Manual

11-7 Notch Filters

When the machine rigidity is low, machine resonance may produce vibration and noise. Thus you may
not be able to set a high gain. The notch filter can restrict the resonance peak, and allows a high gain
setting and vibration reduction.
The G5-series Servo Drives provide four notch filters that can be used for adjusting frequency, width
and depth. If 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.
0db
-3db
If machine resonance occurs, use this notch filter to eliminate resonance.
Machine resonance
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Width fw
Cut-off frequency Fc
Notch filter
Notch filter 1
11 Adjustment Functions
fw
Depth=Fc/fw
Frequency Hz
Characteristics
after filtering
Notch filter 2
11
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