What is the role of P(Protional), I(Integral) and D
(Derivative) in PID Controller?
Answer Posted / lenin kumar
P(proptional):To control the present difference between sp
and pv
I(integral): To control the past
D(derivative) :To control the futcher
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
What is offset in a control system.
what does it mean an active front end in vfd plz explain it briefly
how to rectify the poor signal strength in utrasonic digtial flow meter ,model:ge digital xce868i
Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =
where are following valves are applicable to install. can any valve be installed any line. globe valve butterfly valve boll valve gate valve
What is the differerence between hysterisis and linearity.
this site is owned by an nonsense
I need to know steps to Calibration Valve Guard......
Give Detail information about plc,dcs,and scada system?
how u choose thermowell lenght n pnumatic C/v size?
can anyone guide me how to get any of the previous year GAIL question papers? are they available? 0n 2nd august i have to take the written test.
What are the charcterstics of a P&ID controller block for Governor speed raise or lower for a load sharing functionality between 4 Gas turbines in droop mode.
the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)
Where are oxygen analysers installed in cfbc boilers? What are their usual readings?
what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?