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What's the difference between open loop and closed loop?

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Question added by pooja salimath
Date Posted: 2017/01/24
Hussain Rabbani
by Hussain Rabbani , PPM Coordinator , Mima facility Management

In open loop system we do not have feedback sensor between input and output while in closed systems we have feedback sensor between input and output

In closed loop system we have a feedback provided by sensors.

In open loop system wo do not have any feedback

Muhammad Shoaib Akhter
by Muhammad Shoaib Akhter , Instruments and Control systems Engineer , Volka Food International Multan

Closed loop systems have a feedback path between input and output to maintain the desired output but in case of open loop system there is no feedback path.

SANJAY V SANJU
by SANJAY V SANJU , ELECTRICAL ENGINEER , KERALA STATE ELECTRICITY BOARD LIMITED

IN OPEN LOOP SYSTEM THERE IS NO FEEDBACK BETWEEN I/P AND O/P AND IN CLOSED LOOP SYSTEM O/P IS FEEDBACKED TO I/P 

haytham mohamed
by haytham mohamed , senior electrical and automation engineer , wadi group

open system with no feed back

closed system with feed back so is better than open loop

Mohammed Abdallah Haridy
by Mohammed Abdallah Haridy , Lead Project Engineer , Honeywell Process Solutions

Open loop control is for calculating the output based on the current input's/inputs' states, But closed loop stands for calculating the new output state/value based on the current output state/value along with input state

Wilber Blas
by Wilber Blas , Training and Development Supervisor , Barrick Gold Corporation

Open loop is a control system which doesn`t have any reference from output.

Close loop is a control system which has a reference from output to improve the control and keep the output equal to Set Point.

Waqar Younas
by Waqar Younas , Internee Engineer , Nestle (Kabirwala Factory)

Open Loop System:  In which control action is independent of output.

Close Loop System: In which control action is depend upon the output.

Abduljaleel AJ Alriyadh
by Abduljaleel AJ Alriyadh , Systems & Control Manager , GEMS

Open loops don't have feedback, while close loops do. A feedback, generally speaking, is a measure of a system response, which allows error computation. In another word, the feedback loop (closed loop) architecture allows the response to be compared to the desired set point. Thus, feedback loops provide more accurate setups

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