Speed Feed Forward Gain - Delta Electronics ASDA-B Series User Manual

Chapter 6 Control Modes of Operation|ASDA-B Series
AutoMode, the value of this parameter will be changed in accordance with the setting value of
parameter P2-31 automatically (Please refer Table 6.D & 6.E in Chapter 6).
Time constant of speed integral compensation: (1000/KVI) ms
P2 - 07 SFG

Speed Feed Forward Gain

Default: 0
Applicable Control Mode: S
Unit: %
Range: 0 ~ 100
Settings:
This parameter is used to set the feed forward gain when executing speed control command.
When using speed smooth command, increase gain can improve speed track deviation.
When not using speed smooth command, decrease gain can improve the resonance condition of
mechanical system.
In theory, stepping response can be used to explain proportional gain (KVP), integral gain (KVI) and
feed forward gain (SFG). Now we use frequency area and time area respectively to explain the logic.
Frequency Domain
STEP 1: Set the value of KVI=0,
KVF=0 and adjust the value of KVP.
Gain
Phase
6-20
the value of
KVP
Frequency
Frequency
KVP
Communication Addr.: 0207H
Related Section:
Section 6.3.6
STEP 2 Fix the value of KVP and adjust the
：
value of KVI.
Gain
KVI
KVI
Phase
Frequency
Frequency
Revision January, 2009