Delta ASDA-A3 Series User Manual page 311

Tuning
Q factor of notch filter
The Q factor of the notch filter determines the frequency range (amount of signal) around the
specific frequency to be filtered. The higher the Q factor, the narrower the filtered frequency
5
band, and thus the phase margin of the system is less affected. In general, for systems with
higher inertia or lower stiffness, the Q factor at the resonance point is relatively high.
If the Q factor is set too high, the resonance cannot be completely suppressed, and it is likely to
cause resonance at the cut-off frequencies around the resonance point. In this case, set the
Q factor lower to improve the condition.
5-44
0
-5
-10
Q value = 1
-15
Q value = 5
Q value = 10
-20
2
10
Frequency [Hz]
50
0
-50
2
10
Frequency [Hz]
3
10
3
10
ASDA-A3