Open & Closed Loop Control System - Advantages & Disadvantages
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:
In this post, we will be discussing various advantages and disadvantages of the 2 types of control systems.
Open Loop System:
Advantages:
Disadvantages:
Closed Loop System:
Advantages:
Disadvantages:
If you have any queries regarding this topic, you can post your comments below and I will make sure your queries are answered well.
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:
- Open loop system which is also called as Manual control system.
- Closed loop system which is also named as automatic control system.
In this post, we will be discussing various advantages and disadvantages of the 2 types of control systems.
Open Loop System:
Advantages:
- Simplicity and stability: they are simpler in their layout and hence are economical and stable too due to their simplicity.
- Construction: Since these are having a simple layout so are easier to construct.
Disadvantages:
- 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.
- Due to the absence of a feedback mechanism, they are unable to remove the disturbances occurring from external sources.
Closed Loop System:
Advantages:
- 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.
- 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:
- Construction: They are relatively more complex in construction and hence it adds up to the cost making it costlier than open loop system.
- Since it consists of feedback loop, it may create oscillatory response of the system and it also reduces the overall gain of the system.
- 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.
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ReplyDeleteHello 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.
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ReplyDeleteI would like to know how feedback loop can create oscillatory response of the system
ReplyDeleteNumber of fins in FPC for open loop system
ReplyDeletewhat are the control elements of both
ReplyDeletehow 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 chhatoi_prabhat@yahoo.co.in i will thank full to you.
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how to get transfer function from a process
ReplyDeleteplease give me a brief description of equations which are derived from transfer function.
ReplyDeleteplease give me a brief description of equations which are derived from transfer function.
ReplyDeleteif u don't mind please give the example of open and closed loop system at least 25 examples.
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DeleteThanks a lot. How does the feedback reduce the overall gain of the system in close loop system.
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• Give the examples for the same for day-to-day and industrial applications.
ReplyDelete• Give the examples for the same for day-to-day and industrial applications.
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ReplyDeletethnx 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.....
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeleteWhy open loop system is more stable
ReplyDeleteWhy oscillatory response is disadvantage of closed loop control system
ReplyDeleteWhy oscillatory response is disadvantage of closed loop control system
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeletethank you so much
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeleteThank 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.
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