№
SR-ZSV00039
－
39
－
Motor Business Unit, Appliances Company, Panasonic Corporation
5
－
2
－
3
Notch Filter
When the mechanical stiffness is low, resonance due to axis distortion, etc. may generate vibration or noise,
in which case a high gain cannot be specified. In that case, specifying a higher gain or reducing vibra-
tions is made possible by suppressing a resonance peak with the notch filter.
1
）
Related parameter
It is possibility to adjust the frequency
、
width
、
depth,four
related parameter can be used.
Category
No.
Parameter
Setup range Unit
Function
2
1
1
st
Notch frequency
50
5000
Hz
Specifies the center frequency of the first notch filter.
Specifying 5000 disables the notch filter.
2
2
1
st
notch width
selection
0
20
-
Specifies the frequency width of the first notch filter.
2
3
1
st
notch depth
selection
0-99
-
Specifies the depth at the center frequency of the first notch filter.
2
4
2
nd
notch frequency
50
5000
Hz
Specifies the center frequency of the second notch filter.
Specifying 5000 disables the notch filter.
2
5
2
nd
notch width
selection
0
20
-
Specifies the frequency width of the second notch filter.
2
6
2
nd
notch depth
selection
0
99
-
Specifies the depth at the center frequency of the second notch
filter.
2
7
3
rd
Notch frequency
*1
50
5000
Hz
Specifies the center frequency of the third notch filter.
Specifying 5000 disables the notch filter.
2
8
3
rd
notch width
selection *1
0
20
-
Specifies the frequency width of the third notch filter.
2
9
3
rd
notch depth
selection *1
0
99
-
Specifies the depth at the center frequency of the third notch filter.
2
10
4
th
Notch frequency
*1
50
5000
Hz
Specifies the center frequency of the fourth notch filter.
Specifying 5000 disables the notch filter.
2
11
4
th
notch width
selection *1
0
20
-
Specifies the frequency width of the fourth notch filter.
2
12
4
th
notch depth
selection *1
0
99
-
Specifies the depth at the center frequency of the fourth notch filter.
*1 When the adaptive filter function is used, the parameter value is automatically specified.
2
）
Usage
Specify a resonance frequency on the basis of the frequency characteristics measurement function of the
setup support software, or operating waveform on the waveform graphic function, and specify a Notch
frequency for use.
3
）
Notch width/depth
A value on the left of the following table is specified for a width of Notch filter, which is a ratio of fre-
quency band width in which damping factor becomes –3 [dB] against the Notch center frequency with
depth of “0.”
The depth of a notch filter is an I/O ratio that provides the complete interruption of the center frequency
input with a setting of 0 and complete passage with a setting of 100. In [dB], the values are as shown
in the rightmost column of the table below on the right.