What is an Open-Loop Control System?
The control system in which controlling action or input does not rely on the outcome or output is known as the Open-loop control system. This is a very simple system that needs low maintenance and is very cost-effective.
What is a Closed-Loop Control System?
The control system which utilises its feedback signal or calls to render output is known as the Closed-loop control system.
Difference between Open-Loop & Closed-Loop Control System
| S.No. | Open-Loop Control System | Closed-Loop Control System |
| 1 | The controlled action is free from the output in the case of an open-loop control system. | Here the output relies on the controlled act of the system. |
| 2 | It is also known as a non-feedback control system. | It is also known as a feedback control system |
| 3 | The segments of the open-loop control system hold a controlled process and controller. | The segments of the closed-loop control system contain a controlled process, controller, amplifier and feedback. |
| 4 | It is simple to build this system. | It is complex to construct this system. |
| 5 | It is unreliable. | It is reliable |
| 6 | The precision exactness of this system mostly relies on calibration. | The accuracy depends on the feedback. |
| 7 | These systems are stable. | These are less stable as compared to the open-loop control system. |
| 8 | Here optimization is not allowed. | Optimization is allowed here. |
| 9 | It provides a quick response. | It is sluggish in terms of providing the response. |
| 10 | The calibration of this system is hard. | The calibration of this system is simple. |
| 12 | Open-loop control systems are nonlinear | These are linear. |
| 13 | Some of the examples of these types of systems are TV remote, automatic washing machine, immersion rod, traffic light, etc. | Some of the examples of these types of systems are pressure and speed, AC, control systems, toaster, and refrigerator. |
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