In this article, we will study the what is difference between open-loop and closed-loop control systems.
Let’s compare both systems with multiple specifications.
Difference between Open Loop and Closed Loop Control Systems.
| # | Content | Open-Loop Control System | Closed-Loop Control System |
| 01 | Defination What is open loop and closed loop control system? | The control system in which input or controlling action does not depend on the output is called an Open-loop control system. | The control system in which input or controlling action depends on the output is called an Closed-loop control system. |
| 02 | Called | Sometimes, an Open-loop control system is called a Non-feedback system. | A closed-loop control system is called as Feedback system. |
| 03 | Construction | The construction of an open-loop control system is very simple. | The construction of an open-loop control system is very complex. |
| 04 | Inbuilt Components | Mainly, two components (like controller and the controlled process) are included in an open-loop control system. | More componenets (like controller, feedback, comparator,etc) are included in closed-loop control system. |
| 05 | Required Additional System | This system does not consist of a feedback loop. | This system consists of a feedback loop to control the state or previous output of the dynamic system. |
| 06 | Stability of Open-loop & Closed loop systems. | This system occurs stable in nature. | This system occurs less stable or unstable in nature under certain conditions. |
| 07 | Output Function | The output does not change the action of the control system. | The output changes the action of the control system. |
| 08 | Performance of Operation | Open-loop control system gives the fast response in less time. | A closed-loop control system gives a slow response in more time. |
| 09 | Reliability | The reliability of this control system is less. | The reliability of this control system is more. |
| 10 | Effect on both control systems | Find more internal noise and the effect of parameter variation. | Find less internal noise and the effect of parameter variation. |
| 11 | Cost | The cost of this system is low. | The cost of this system is high. |
| 12 | Accuracy | The open-loop system performs accurately when calibration is good. | The closed-loop system performs accurately due to the feedback system. |
| 13 | Maintanance | Less maintenance is required in open-loop control system. | More maintenance is required in closed-loop control system. |
| 14 | Optimization | Optimization is not possible in this system. | Optimization is possible in this system. |
15. Block Diagram of Open-Loop & Closed-Loop Control System
- Open-Loop Control System
- Closed-Loop Control System
16. What is the example of an open-loop & closed-loop control system?
Open-loop control system examples:
- Field control DC motor
- Television (TV) remote
- Automatic washing machine
- Automatic traffic light control
- Immersion rod
Closed-loop control system examples:
- Human respiratory system
- Air conditioner (AC)
- DC motor speed control
- Missile launching system
- Radar tracking system
These are all the basic specifications of open-loop vs closed-loop systems with examples. Also, describe the advantages and disadvantages of open and closed-loop control systems.
If you have any queries, you can ask in the comment section.
Thanks for Reading!
I have completed master in Electrical Power System. I work and write technical tutorials on the PLC, MATLAB programming, and Electrical on DipsLab.com portal.
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