№
SR-ZSV00039
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31
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Motor Business Unit, Appliances Company, Panasonic Corporation
5
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1
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2
Adaptive Filter
Vibrations are reduced by estimating resonance frequency on the basis of vibration components appearing
in motor speeds under actual operations, and by removing the resonance components from torque com-
mand.
1) Scope of application
This function is enabled under the following conditions
Conditions for the functioning of adaptive filter
Control mode
Control mode must be that other than torque control mode.
Other
In servo On status.
Factors other than control parameters, such as prohibition of deviation counter clearing
command input and torque limiter, are appropriately specified and normal motor rotation
is possible with no problems.
2) Cautions
The adaptive filter may not function normally in the following conditions. If that happens, manually
configure the notch filters for suppressing resonance.
Conditions that interfere with operations of adaptable filter
Resonance point
When a resonance frequency is lower than 3 times as high as speed responding
frequency [Hz].
The resonance peak is low or control gain is low and its effect is not observed in the
motor speed.
Three or more resonance points exist.
Load
Motor speed variation including a high-frequency component is generated due to any
nonlinear factor such as backlash.
Command pattern
Acceleration/deceleration is rapid at 30000 [r/min] in 1 [s] or higher.
3) Related parameters
The operation of the adaptive filter can be specified by using the following parameters.
Category
No.
Parameter
Setup range
Unit
Function
2
00
Adaptive filter mode
setup
0
4
Operating mode of adaptive filter is specified.
Setting value 0: Adaptive filter invalid
Adaptive filter is Invalid. Current values are retained for
parameters related to 3rd and 4th Notch filter.
Setting value 1: One adaptive filter is valid.
One adaptive filter is made valid. Update parameters related
with 3rd Notch filter in accordance with adapting results.
Setting value 2: Two adaptive filters are valid.
Two adaptive filters are valid. Update parameters related with
3rd and 4th Notch filter in accordance with adapting results.
Setting value 3: Resonance frequency measurement mode
Resonance frequency is measured. Measurement results are
verified on PANATERM. Current values are retained for
parameters related to 3rd and 4th Notch filter.
Setting value 4: Clearing adapting results.
Parameters related to 3rd and 4th Notch filter are made invalid
and adapting results are cleared.
(Continued)