Chapter 6 Control Modes of Operation
ASDA-A User Manual
4th Edition 2005/11/30, HE03
© DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
6-24
Time Domain
KVP
When the value of KVP is greate , the value of the
bandwidthis also greater and the raising time is shorter.
However, when the value of phase margin is over low,
it is not more helpful to steady error.
But it is more helpful to dynamic tracking error.
Rotation
Speed
Time
KVI
When the value of KVI is greater, the value of
low-frequency gain is also greater and the value
of steady error is nearly zero (0).
However, the value of phase margin will reduce
quite substantially.
It is more helpful to steady error. But it is not more
helpful to dynamic tracking error.
Rotation
Speed
Time
KVF
When the value of KVF is nearly to zero (0), the
phase delay time is also nearly to zero (0) and
the value of dynamic tracking error will become
very small. However, when the value of KVF is
too great, it may cause vibration.
Rotation
Speed
Time
In general, when using frequency domain method need equipment, such as spectrum analyzer to analyze
and users also should have this kind of analysis technology. However, when using time domain method,
users only need to prepare an oscilloscope. Hence, general users usually use time domain method with the
analog DI/DO terminal provided by the servo drive to adjust what is called as PI (Proportional and Integral)
type controller. As for the performance of torque shaft load, input command tracking and torque shaft load
have the same response when using frequency domain method and time domain method. For users, you
can reduce the bandwidth of input command tracking by using input command low-pass filter.