The Difference between Online Identification and Offline Identification is given in the following table.
|
S.No.
|
Online Identification
|
Offline Identification
|
|
1.
|
Used for
control applications.
|
Used for
Analysis applications.
|
|
2.
|
Model is
used for controller design.
|
Model is
used for offline simulation of systems.
|
|
3.
|
Compact and
easy to manipulate model.
|
Free run
simulation without access to past output measurement.
|
|
4.
|
Output
prediction with little computational burden.
|
No access to
prediction.
|
|
5.
|
One step
prediction.
|
No means to
reconstruct.
|
|
6.
|
Correction
at each step.
|
Model must
be entirely deterministic.
|
|
7.
|
Initial
model need not be very accurate.
|
Should be
more accurate than online.
|
|
8.
|
|
Complexity
may be high.
|
Excercise
Q1. Compare Online and Offline Identification.
