Delta ASD-A2-0121 Series User Manual page 235

Chapter 6 Control Mode of Operation
Time Domain
6-38
The bigger KVP value causes higher
bandwidth and shortens the rising
time. However, if the value is set too
big, the phase margin will be too
small.
To steady-state error, the result is
not as good as KVI. But it helps to
reduce the dynamic following error.
The bigger KVI value causes greater low-
frequency gain and shortens the time the
steady-state error returns to zero. However,
the phase margin will dramatically decrease
as well.
To steady-state error, it is very helpful but
shows no benefit to dynamic following error.
If the KVF value closes to 1, the feed
forward compensation will be more
complete and the dynamic following
error will become smaller. However,
if the KVF value is set too big, it
would cause vibration.
ASDA-A2