Notch Filters; Outline Of The Function - Omron G5 Series User Manual

6 Applied Functions
6-3

Notch Filters

6-3-1

Outline of the Function

Four notch filters can be set 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.
0 db
-3 db
If mechanical resonance occurs, use this notch filter to eliminate resonance.
Machine resonance
6 - 8
Width fw
Cut-off frequency Fc
Notch filter
Notch filter 1
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User's Manual
fw
Depth=Fc/fw
Frequency Hz
Characteristics
after filtering
Notch filter 2