Interested to Buy Any Domain ? << Click Here >> for more details...
what is reset windup in integral control?
- 6 Answers
- 30886 Views
- Honeywell, I also Faced
- E-Mail Answers
Answer Posted / www.islamqa.com
"Reset windup" is a controller problem that occure when
there's an upnormal load disturbance, which make Pv away
from Sp although the controller is 100% o/p!!
in this case the controller will continue to integrate the
error signal upward, so we can say we have "reset wind
up ", and the valve (or final control element) is taking
its extreme position - up to this we have no problem.
# The problem starts when the unusual disturbance is away
and the controller extreme o/p will have an effect on the
Pv which now on it's way to equal Sp.
The problem now is that the controller seems like to
saturate at 100% due to time spent "winding up", Now we may
have Pv=Sp and the controller remain saturated at 100% o/p,
it will take a long time before the controller start to
downward its o/p value.
# Modern PID has "anti reset wind up" feature, which may
contain an algorithm to turn off the integral term in case
of error is exceed a specific value, or any other algorithm
to stop integral accumulation in case of winding up.
Regards,
Ahmed Sabry
Control and Instrumentation Engineer
GPC - General Petroleum Company
ahmedsabry.online@gmail.com
CELL.: 00 2 0121367310
| Is This Answer Correct ? | 13 Yes | 1 No |
Post New Answer View All Answers
What is hp & mp seperator .& what is its working principle ?
what is the difference between profibus and controlnet networking.
What are the error values can accepted in flow transmitter calibration?could u give any formula for this?
How to Calibrate Ultrasonic flow Transmitter in Field
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)
what is the difference between Cv and air consumption? why the customer needs Air consumption details?
How to erection of DCS Panel at site step by step
hi,i am doing 3 year in electronic and instrumentation engineering. what type of aptitude questions will be asked in a core industries and how can i improve my skills in instrumentation?
Identification of ss fittings, pilot valves, relief valve.
what is the difference between active & reactive power?
Calibration procedure for water rotameters
Why upper weighing limit of electronics balance is 90% of the total weighing capacity?
Full form of KKS when use DCS.
the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove
How the sizing of the analog signal cable is calculate?
