7. SPECIAL ADJUSTMENT FUNCTIONS
7.3 Adaptive vibration suppression control
(1)Function
Adaptive vibration suppression control is a function in which the servo amplifier detects machine resonance and sets the filter characteristics automatically to suppress mechanical system vibration. Since the filter characteristics (frequency, depth) are set automatically, you need not be conscious of the resonance frequency of a mechanical system. Also, while adaptive vibration suppression control is valid, the servo amplifier always detects machine resonance, and if the resonance frequency changes, it changes the filter characteristics in response to that frequency.
|
| Machine resonance point | Machine resonance point |
Mechanical | Mechanical | ||
system | system | ||
response | response | ||
|
| Frequency | Frequency |
Notch |
|
| Notch |
| |||
depth | depth | ||
|
| Frequency | Frequency |
| Notch frequency | Notch frequency | |
When machine resonance is large and frequency is low | When machine resonance is small and frequency is high | ||
POINT
The machine resonance frequency which adaptive vibration suppression control can respond to is about 150 to 500Hz. Adaptive vibration suppression control has no effect on the resonance frequency outside this range. Use the machine resonance suppression filter for the machine resonance of such frequency.
Adaptive vibration suppression control may provide no effect on a mechanical system which has complex resonance characteristics or which has too large resonance.
Under operating conditions in which sudden disturbance torque is imposed during operation, the detection of the resonance frequency may malfunction temporarily, causing machine vibration. In such a case, set adaptive
vibration suppression control to be "held" (parameter No. 25: 
2 
) to fix the characteristics of the adaptive vibration suppression control filter.
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