Baumuller b maXX BM5800 - Other Filters

Controllers
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
444
of 814
3.7
3.7.2.4 Other filters
Besides the filters in the torque current set value, filters can be set on other position as
well. In detail these are the following:
– Notch- and PT
1
filters in the speed actual value
– Biquad filter in the set value
–PT
1
-filters or biquad filter in the speed set value
– Biquad filter in the acceleration feedforward
Speed actual value filter
The speed actual value can be smoothed by a PT
1
filter. If vibrations occur at the motor
at a fixed frequency, these can be filtered by the notch filter, also.
Set value filter
The set value filter filters the set value, which the set value manager receives from the
active set value generator (refer to chapter
ZSet Value Manager– on page 347). This way
position as well as speed and acceleration are filtered. This filter can be used if individual
resonance frequencies should be excited. The settings of the filter are made via the pa
-
rameters Z18.88– to Z18.91–. The calculation of the filter constants is made via the com-
mand 1 of parameter Z18.92–. The filter is activated via bit 11 of Z18.9–.
Notchfilter with defined reduction
Figure 113: Notchfilter with defined reduction
Center frequency 200 Hz
Reduction -12 dB
f
Z
200 Hz
f
N
100 Hz
D
Z
0
D
N
0.7
f
Z
Center frequency=
f
N
10
Reduction
40
------------------------
f
Z
=
D
N
0=
D
Z
0,7=