Yaskawa SGDH Linear Sigma Series - Manual (Page 349)

10.4 Servo Gain Adjustment Functions
10-27
10
(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 characteristics. A higher notch filter Q value
produces a sharper notch and phase delay.
* Used for software version 32 or later.
Set the machine’s vibration frequency in the parameter of a notch filter to be used.
* Used for software version 32 or later.
Q value ＝ 0.7 Q value ＝ 1.0
Notch filter
Notch filter
Gain
db
Frequency Hz
-300
-200
-100
0
100
2 10 10
3 10 4
2 10 10
3 10 4
Phase
Frequency Hz
-400
-300
-200
-100
0
deg
Notch filter
Gain
db
Frequency Hz
Notch filter
Frequency Hz
-300
-200
-100
0
100
2
10 10
3
10
4
2
10 10
3
10
4
Phase
-400
-300
-200
-100
0
deg
Parameter Meaning
Pn408 n.†††0 Disables the first stage notch filter.
n.†††1 Enables the first stage notch filter.
n.†0†† Disables the second stage notch filter.*
n.†1†† Enables the second stage notch filter.*
Enables the notch filter to be used. (The setting is validated immediately.)
Pn409 First Stage Notch Filter Frequency
Setting Range Setting Unit Factory Setting Setting Validation
50 to 2,000 Hz 2,000 Immediately
Pn40B Second Stage Notch Filter Frequency *
Setting Range Setting Unit Factory Setting Setting Validation
50 to 2,000 Hz 2,000 Immediately
Speed Position Force
Speed Position Force