Mitsubishi Electric MELSERVO-J3W Series, Инструкция по эксплуатации

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7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 1
7. SPECIAL ADJUSTMENT FUNCTIONS
POINT
The functions given in this chapter need not be used generally. Use them if you are
not satisfied with the machine status after making adjustment in the methods in
chapter 6.
If a mechanical system has a natural resonance point, increasing the servo system response level may cause
the mechanical system to produce resonance (vibration or unusual noise) at that resonance frequency.
Using the machine resonance suppression filter can suppress the resonance of the mechanical system.
7.1 Function block diagram
0
Speed
control
Low-pass filter
Parameter
No.PB23
0
1
Automatic setting
Manual setting
Machine resonance
suppression filter 2
Parameter
No.PB16
Parameter
No.PB01
Manual setting
Machine resonance
suppression filter 1
2
1
0
M
Servo
motor
Current
command
Encoder
7.2 Machine resonance suppression filter
(1) Function
The machine resonance suppression filter is a filter function (notch filter) which decreases the gain of the
specific frequency to suppress the resonance of the mechanical system. You can set the gain decreasing
frequency (notch frequency), gain decreasing depth and width.
Mechanical
system
response
level
Machine resonance point
Frequency
Notch
characteristics
Notch frequency
Frequency
Notch width
Notch depth
You can use the machine resonance suppression filter 1 (parameter No.PB13, PB14) and machine
resonance suppression filter 2 (parameter No.PB15, PB16) to suppress the vibration of two resonance
frequencies.