11-23
11 Adjustment Functions
CJ2 CPU Unit Hardware User’s Manual
11-7 Notch Filters
11
11-7 Notch Filters
When the machine rigidity is low, axis torsion may produce resonance which results in 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 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
To Next Page
Loading...
