OPEN LOOP SYSTEM vs CLOSE LOOP SYSTEM
Open loop system
|
Close loop
system
|
The open loop systems are
simple & economical
|
The
closed loop systems are complex and costlier
|
They consume less power
|
They consume
more power
|
Easier to build
|
Difficult
to build
|
If calibration is good, they
perform accurately
|
They are
accurate because of feedback
|
OL systems are generally more
stable
|
CL
systems are less stable
|
Optimization is not possible
|
Optimization is
possible
|
These are not reliable
|
These
are reliable
|
Easy to regulate
|
Ability to
correct error
|
There is no feedback
|
Feedback
is always present
|
