YASKAWA Σ-V Series User Manual page 204

5 Adjustments
5.9.3 Force Reference Filter
(2) Notch Filter
The notch filter can eliminate specific frequency vibration generated by sources such as resonances of ball
screw axes.
The notch filter puts a notch in the gain curve at the specific vibration frequency. The frequency components
near the notch frequency can be eliminated with this characteristic.
A higher notch filter Q value produces a sharper notch and phase delay.
Gain
(db)
Phase
(deg)
Set the notch filter enabled/disabled with Pn408.
Parameter
Pn408
5-66
Q value = 0.7
Notch filter
100
0
-100
-200
-300
2 3
10
10
Frequency (Hz)
Notch filter
0
-100
-200
-300
-400
2 3
10
10
Frequency (Hz)
n. 0
1st step notch filter disabled. [Factory setting]
n. 1
1st step notch filter enabled.
n. 0
2nd step notch filter disabled. [Factory setting]
n. 1
2nd step notch filter enabled.
100
0
Gain
-100
(db)
-200
-300
4
10
2
10
0
-100
Phase
-200
(deg)
-300
-400
4
10
2
10
Function
Q value = 1.0
Notch filter
3
10
Frequency (Hz)
Notch filter
3
10
Frequency (Hz)
When Enabled Classification
Immediately Setup
4
10
4
10