SD20-G Series
266
7.4 Vibration Inhibition
7.4.1 Vibration Inhibition Function
Mechanical system has certain resonant frequency, when improving servo gain, resonance may generate,
which could notmake the gain improving continuously. There are 2 main schemes for vibration
inhibition:
1)
Torque Instruction Filter(Po214 and Po215)
Torque instruction decays in high frequency by setting filter time constant to realize vibrationinhibition.
2)
Notch Filter
Notch filter can lower the gain of certain frequency to reach vibration inhibition.
The principle of notch filter shows as below:
F
L
F
H
Notch
bandwidth
Notch depth
Mechanical system
Amplitude-frequency
characteristics
Frequency
Frequency
Notch
characteristics
Fig 7.4.1Inhibition principle of notch filter
Servo drive has 4 groups of notch filters; each notch filter has 3 parameters, which are notch filter
frequency, width level and depth level. Four notch filters either can be set manually or can be
configured as adaptive notch filter, at this time each parameter is set by servo drive.
Object
1
st
Notch Filter
2
nd
Notch Filter
3
rd
Notch Filter
4
th
Notch Filter
Frequency
Po217
Po220
Po223
Po226
Width level
Po218
Po221
Po224
Po227
Summary of Contents for SD20-G Series
Page 35: ...SD20 G Series 35 M3 structure Fig 3 1 5 Servo drive structure 3...
Page 36: ...SD20 G Series 36 ML3 structure 118 5 5 7 5 93 297 8 223 118 93 0 5 12 5 7 5 4 M4...
Page 38: ...SD20 G Series 38 M4 structure Approx mass 10 365 kg Fig 3 1 7 Servo drive structure 5...
Page 39: ...SD20 G Series 39 M5 structure Approx msaa 11 1Kg Fig 3 1 8 Servo drive structure 6...
Page 40: ...SD20 G Series 40 M6 structure Approx mass 17 4Kg Fig 3 1 9 Servo drive structure 7...
Page 182: ...SD20 G Series 182 Fig 6 4 44SD20E Cam internal frameworkdiagram...
