Answer / rajesh kumar

proportional controller changes the controller output with
respest to error
but it produces linear offset
p=kP eP

Answer / naveed ahmad

In controller must be used proportaional (P). according to
change in input it 'll change the output. means output is
proportional to the input. if controller is direct action
it 'll be directly proportional and if controller is
reverse action then it 'll be inverslly proportional. Keep
in your mind controller input is always an error signal.
if you have any concern plz contact me at my email address
instt.naveed@yahoo.com

Answer / sattar

To maintain one-to-one correspondence between error signal
and manipulated signal.

Answer / rt langley

It is the amount the measurement must change to move the
valve (final control element) fully open or fully closed in
a control system.

Answer / dinesh

proportional control is used to linear
increase(relationship) with the controlled variable and to
the final control element

Answer / rajesh

Normally In PID Controller Proportional gain and integral
time is important parameters
in Process control we are using several parameters so we
maintain a pertucular level of the system proportional is
used.

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