sh030106u.pdf - 第234页

7. SPEC IAL ADJUSTMEN T FUNCT IONS 7 - 5 7.1.2 Ad aptive f ilter II POINT The machin e reson ance fre quency wh ich adap tive f ilter II (adapt ive tun ing) ca n respond t o is abo ut 100 Hz to 2.25 k Hz. As f or the r e…

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7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 4
(2) Parameter
(a) Machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14])
Set the notch frequency, notch depth and notch width of the machine resonance suppression filter 1
([Pr. PB13]/[Pr. PB14])
When you select "Manual setting (_ _ _ 2)" of "Filter tuning mode selection" in [Pr. PB01], the setting
of the machine resonance suppression filter 1 is enabled.
(b) Machine resonance suppression filter 2 ([Pr. PB15]/[Pr. PB16])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 2 selection" in
[Pr. PB16].
How to set the machine resonance suppression filter 2 ([Pr. PB15]/[Pr. PB16]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(c) Machine resonance suppression filter 3 ([Pr. PB46]/[Pr. PB47])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 3 selection" in
[Pr. PB47].
How to set the machine resonance suppression filter 3 ([Pr. PB46]/[Pr. PB47]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(d) Machine resonance suppression filter 4 ([Pr. PB48]/[Pr. PB49])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 4 selection" in
[Pr. PB49]. However, enabling the machine resonance suppression filter 4 disables the shaft
resonance suppression filter.
How to set the machine resonance suppression filter 4 ([Pr. PB48]/[Pr. PB49]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(e) Machine resonance suppression filter 5 ([Pr. PB50]/[Pr. PB51])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 5 selection" in
[Pr. PB51]. However, enabling the robust filter ([Pr. PE41: _ _ _ 1]) disables the machine resonance
suppression filter 5.
How to set the machine resonance suppression filter 5 ([Pr. PB50]/[Pr. PB51]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 5
7.1.2 Adaptive filter II
POINT
The machine resonance frequency which adaptive filter II (adaptive tuning) can
respond to is about 100 Hz to 2.25 kHz. As for the resonance frequency out of
the range, set manually.
When adaptive tuning is executed, vibration sound increases as an excitation
signal is forcibly applied for several seconds.
When adaptive tuning is executed, machine resonance is detected for a
maximum of 10 seconds and a filter is generated. After filter generation, the
adaptive tuning mode automatically shifts to the manual setting.
Adaptive tuning generates the optimum filter with the currently set control gains.
If vibration occurs when the response setting is increased, execute adaptive
tuning again.
During adaptive tuning, a filter having the best notch depth at the set control gain
is generated. To allow a filter margin against machine resonance, increase the
notch depth in the manual setting.
Adaptive vibration suppression control may provide no effect on a mechanical
system which has complex resonance characteristics.
Adaptive tuning in the high accuracy mode is available with servo amplifiers with
software version C5 or later. The frequency is estimated more accurately in the
high accuracy mode compared to the standard mode. However, the tuning
sound may be larger in the high accuracy mode.
(1) Function
Adaptive filter II (adaptive tuning) is a function in which the servo amplifier detects machine vibration for
a predetermined period of time 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.
Response of
mechanical systemNotch depth
Machine resonance point
Notch frequency
Frequency
Frequency
Response of
mechanical systemNotch depth
Machine resonance point
Notch frequency
Frequency
Frequency
When machine resonance is large and
frequency is low
When machine resonance is small and
frequency is high
7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 6
(2) Parameter
Select how to set the filter tuning in [Pr. PB01 Adaptive tuning mode (adaptive filter II)].
[Pr. PB01]
Filter tuning mode selection
00
0
1
2
Setting
value
Filter tuning mode selection
Disabled
Automatic setting
Manual setting
PB13/PB14
Automatically set parameter
Tuning accuracy selection (Note)
0: Standard
1: High accuracy
Note. This di
g
it is available with servo amplifier with software version C5 or later.
(3) Adaptive tuning mode procedure
No
No
Yes
Yes
No
Yes
Execute or re-execute adaptive
tuning in the high accuracy mode.
(Set [Pr. PB01] to "1 _ _ 1".)
In the standard mode In the high accuracy mode
Execute or re-execute adaptive
tuning in the standard mode.
(Set [Pr. PB01] to "0 _ _ 1".)
Tuning ends automatically after the
predetermined period of time.
([Pr. PB01] will be "_ _ _ 2" or "_ _ _
0".)
Adaptive tuning
Operation
Is the target response
reached?
Decrease the response until vibration
or unusual noise is resolved.
End
Yes
No
No
Yes
Increase the response setting.
Has vibration or unusual
noise occurred?
Has vibration or unusual
noise been resolved?
Using the machine analyzer, set the
filter manually.
Yes
No
Factor
The response has increased to the machine limit.
The machine is too complicated to provide the
optimum filter.
If assumption fails after tuning is executed at a large vibration or
oscillation, decrease the response setting temporarily down to
the vibration level and execute again.