Communiquez avec les autres et partagez vos connaissances professionnelles

Inscrivez-vous ou connectez-vous pour rejoindre votre communauté professionnelle.

Suivre

What is open loop &closed loop system?

user-image
Question ajoutée par MANOJKUMAR ALAKKODAN VEETIL , instrument /OIL FIELD technician , TRANS ISLAND ELECTROMECHANICAL LLC
Date de publication: 2014/08/19
Yusuf Mohammed
par Yusuf Mohammed , Service Team Leader , Vanderlande Industries

Open loop control system does not involve the feedback taken from the output response due to an input where as in a closed loop control system the feedback from output is considered and an error value is calculated by substracting the desired setpoints from the actuall output value.

MOHAMMED AYOOB
par MOHAMMED AYOOB , Maintenance Foreman , ALSHAFAR STEEL ENGINEERING (ASSENT) L.L.C. P.O.Box:13164, 2/1/147916 Dubai Industrial Camp, Dubai

Openloop control system does not need any feedback from output. Where are closeloop system requires.

open loop control system which not feed back sent and close loop control feed back sent the controller

yogesh kumar
par yogesh kumar , Quality design , samsung services

In the system the output quantity is not depend upon input quantity is called open loop and its oppsite input is required for desired output is called closed loop.

am i right

shaikh tausif ahamed
par shaikh tausif ahamed , Site Supervisor , Al rawda general maint. & decoration co.llc

OPEN LOOP CONTROL SYSTEM:-

*It loop or path is open.

*In this control system  input has no control over output .

*In this control system mv value are adjusted once not readjusted continually to maintain the pv into        sp when disturbance disturb the pv.

CLOSE LOOP  CONTROL SYSTEM:-

* It loop or path is close.

*In this control system, cv are measured and feed back to the controller through a path.

*In this control sysytem  input has control over output .  

*In this control system  controller take care against the all type of disturbances.

NOTE:-

* pv or cv  = speed of moter

* sp =1500rpm

*mv= voltage

*disturbance-lood,bearing,condition,etc.

 

 

Ahmed Alam Khan Bangash
par Ahmed Alam Khan Bangash , Senior Manager Electrical & Instrumentation, Reliability Centered Maintenance at (Cement and Power) , MAPLE LEAF CEMENT FACTORY AND POWER PLANT

In close loop systems feedback is taken from output as error which will be added or subtracted to/from input and then given to system while open loop is based on pre-calculation only, no feedback is added or subtracted to/from input signal.

mohamed eliwa
par mohamed eliwa , instrument and control engineer , egyptian maintenance company 'emc'

Open loop no feed back no ctrol on o/p

closed loop control o/p by control feed back 

main purpose for clsed loop to make zero error "difference between desired o/p and actual o/p"

More Questions Like This