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Amit Biswal
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Control Systems, Electrical Engineering
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Open & Closed Loop System - Advantages & Disadvantages [Control System]. In control systems engineering, a system is actually a group of objects or elements capable of performing individual tasks. They are connected in a specific sequence to perform a specific function.
A system is of 2 types:
1. Open loop system which is also called as Manual control system. 2. Closed loop system which is also named as automatic control system. Follow @speaktechnology
In this post, we will be discussing various advantages and disadvantages of the 2 types of control systems.
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Open Loop System: Advantages: 1. Simplicity and stability: they are simpler in their layout and hence are economical and stable too due to their simplicity. 2. Construction: Since these are having a simple layout so are easier to construct.
Disadvantages: 1. Accuracy and Reliability: since these systems do not have a feedback mechanism, so they are very inaccurate in terms of result output and hence they are unreliable too. 2. Due to the absence of a feedback mechanism, they are unable to remove the disturbances occurring from external sources.
Closed Loop System: Advantages: 1. Accuracy: They are more accurate than open loop system due to their complex construction. They are equally accurate and are not disturbed in the presence of non-linearities. 2. Noise reduction ability: Since they are composed of a feedback mechanism, so they clear out the errors between input and output signals, and hence remain unaffected to the external noise sources.
Disadvantages: 1. Construction: They are relatively more complex in construction and hence it adds up to the cost making it costlier than open loop system. 2. Since it consists of feedback loop, it may create oscillatory response of the system and it also reduces the overall gain of the system. 3. Stability: It is less stable than open loop system but this disadvantage can be striked off since we can make the sensitivity of the system very small so as to make the system as stable as possible.
If you have any queries regarding this topic, you can post your comments below and I will make sure your queries are answered well. You might also like: Matlab program to create transfer functions [Control Systems Lab] Controllability & Observability test on a control system using Matlab Difference between ‘Time Ratio Control’ and ‘Current Limit Control’ Matlab Program to plot Bode and Root Locus plot for the given transfer function Advantages of Parallel Operation of Alternator or Generators Linkwithin
Electrical Engineering
RESELLER WEB HOSTING INDIA 1/20/2012
Thank you for posting the great content…I was looking for something like this…I found it quiet interesting, hopefully you will keep posting such blogs….Keep sharing Reply
EXECUTIVE GIFTS 2/01/2012
Hello amitbiswal.blogspot.com! My Dad is an electrical engineer and also a mechanical engineer. The Open & Closed Loop System - Advantages & Disadvantages article just opened my mind how a certain design works. I now know that closed loop system is more complex in design and since I am familiar with hi-tech devices as a consumer I am for the close loop system. Reply
HADI 4/12/2012
thankx for such publish really helps Reply
AMIRULLAH 4/23/2012
Thank you for the information. Reply
AMIR 4/23/2012
Thanks for the information. Reply
BANGALORE WEBSITE DESIGN 6/01/2012
This is such a Great resource that you are providing and you give it away for free. It gives in depth information. Thanks for this valuable information. Reply
LAVKUSH GUPTA 6/25/2012
thanks alot for this valuable information. Reply
ANONYMOUS 7/03/2012
I would like to know how feedback loop can create oscillatory response of the system Reply
ANONYMOUS 8/02/2012
Number of fins in FPC for open loop system Reply
ANONYMOUS 8/13/2012
what are the control elements of both Reply
SUBRAT CHHATOI 9/03/2012
how a open loop is more stable than a close loop system.by making close loop we can make a unstable system to stable also.like if a transfer function is 1/S+1 ,if we make close loop it will become 1/S+2 then close loop pole of the system moving away from imaginary axis and will become more stable also the response time decrease when it becomes close loop. please mail me the answer
[email protected] i will thank full to you. Reply
Replies BITOO KUMAR 3/08/2015
Thanks for explain looping control
Reply ANGELOSAM123 9/25/2012
Amazing post publish by you , i think it's very effective information share, thanks for sharing a good knowledge. closed loop marketing Reply
DOMINIC TAGORE 11/01/2012
how to get transfer function from a process Reply
ARSHIYA 12/12/2012
please give me a brief description of equations which are derived from transfer function. Reply
ARSHIYA 12/12/2012
please give me a brief description of equations which are derived from transfer function. Reply
ROCKY CHANDRA DAS KAZOL 1/06/2013
if u don't mind please give the example of open and closed loop system at least 25 examples. Reply
Replies AMIT BISWAL 1/07/2013
ok i will do it
Reply MALLA AVEEN 1/07/2013
Thankyou for shareing a valueble information Reply
MALLA AVEEN 1/07/2013
Thank you for shareing valueble information. I think you can give some ex. And give the such as reasion put on that it's very useful. Thankyou. Reply
Replies AMIT BISWAL 1/07/2013
ok i will do it
Reply ANONYMOUS 1/29/2013
Thanks a lot. How does the feedback reduce the overall gain of the system in close loop system. Reply
SRKANTH 1/31/2013
thanks Reply
SRIKANTH 1/31/2013
thanks dude Reply
ANONYMOUS 2/15/2013
what is differne between the control system and communication systems \ Reply
VHICTOR 3/24/2013
Excatly what I needed, what a good post Reply
WISSAM ALBHADLY 7/23/2013
Reply
WISSAM ALBHADLY 7/23/2013
first of all i would like to thank you so much for publishing such a good information , secondly can you tell me what kind of them is most frequently used and why ? your cooperation is so appreciated
[email protected] Reply
RAKY PRAVEEN 7/30/2013
• Give the examples for the same for day-to-day and industrial applications. Reply
RAKY PRAVEEN 7/30/2013
• Give the examples for the same for day-to-day and industrial applications. Reply
ROBERT VONN DOROMAL 1/26/2014
Hi Sir, do you modules for Electronic Control Systems? Advantages and Disadvantages of using such system. Thanks! Reply
GEBRESEMAETI KIDU 3/17/2014
thank you too mach and could you list biomedical equipments related to that Reply
JASWANTH PETHAKAMSETTI 4/12/2014
THQ Reply
JASWANTH PETHAKAMSETTI 4/12/2014
THQ FOR THE INFOO Reply
ROSARIO REGINALDO 5/06/2014
Thank tou all of tou to share information about that I hope tou guys still contribute in our student life thank tou keep help people like us. Reply
RAPHAEL SARAGENA 6/01/2014
Thank you so much for sharing this information... It was very helpful... Reply
RAPHAEL SARAGENA 6/01/2014
Thank you for sharing this information... It was very helpful to me :) Reply
SANJAY NAYAK 6/09/2014
thnx for the information ......but i have small confusion if in close loop system stability is less than open loop system than how it is helpfull to the system..... Reply
AMARNATH PALAKALA 3/13/2015
Reply
HARIKRUSHN GUNA 5/29/2016
thanks Reply
UNKNOWN 7/20/2016
Why open loop system is more stable Reply
ROJA SIDDA 8/06/2016
Why oscillatory response is disadvantage of closed loop control system Reply
ROJA SIDDA 8/06/2016
Why oscillatory response is disadvantage of closed loop control system Reply
KIRTI SHARMA 1/10/2017
Reply
ABABOU HAMZA 3/18/2017
thank you so much Reply
KAVI 5/01/2017
Reply
DIAA SIILIIM 5/05/2017
Thank you so much for your explanations for expressing open and closed loop, may i ask you how system became closed loop makes the system less stable ?? and explanation of oscillatory respone. Hope you mail me.
[email protected] Reply
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