Chapter 6 Control Modes of Operation|ASDA-A&A+ Series
Revision April 2009 6-29
P2-07
P2-25
PI Controller
(Proportional and
Integral Controller)
P2-04,2-06
PWM
P2-23,P2-24
differentiator
Encoder
Feed forward
Gain
Speed estimator
Speed Control Block Diagram
Low-pass
Filter
Notch Filter
To rqu e
Load
Current Sensor
Current Controller
Low-pass filter
Please use parameter P2-25. The figure below shows the resonant open-loop gain.
Gain
Frequency
When the low-pass filter (parameter P2-25) is adjusted from 0 to high value, the value of Low-pass
frequency (BW) will become smaller (see the figure below). The resonant condition is improved and the
frequency response and phase margin will also decrease.
0dB
BW
Gain
Frequency
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