What is Feedback in Control System ?
Feedback is an important concept in engineering management and plays an important role in monitoring and controlling desired behaviour in many processes and devices. Feedback is a process of collecting information about the system output and using this information to adjust the output, thus creating a closed-loop control system. This loop provides continuous monitoring and control to ensure the system operates within limits and achieves its intended objectives.
Next, we will discuss components of feedback which contain:
- Reference Input /Command Input
- Input
- Output
- Feedback Path
- Error Detector
- Controller
Components of Feedback
The feedback control system consists of five basic components:
- Reference Input /Command Input: The input is applied to the whole system is called Reference input.
- Input : This input process transforms the form of the input into the form utilized by the controller.
- Output: This measures the response of the output and transforms it into the form used by the controller.
- Feedback Path: It is the return way to the summing intersection from the output response. It comprises of a feedback component which gives back the output response to the error detector.
- Error Detector: The error detector obtains the calculated signal from output response and be comparable it with the reference input. It gives the error signal by the difference of two signals also known as the actuating signal.
- Controller: It controls the output response depending to the signal received from the error detector.
The return of the output or part of the output to the input side and being used as part of the input to the system is called feedback. Feedback plays an important role in order to improve the performance of the control system.
Effects of Feedback in Control System
Feedback is an important concept in electronics and electrical engineering. It is used to reduce the error between the reference input and the system output. The reduction of system error is merely one of the many important effects that feedback may have on a system. Feedback also affects the performance of features such as security, bandwidth, gain, impact, and sensitivity. Feedback plays an important role in improving the performance of the control systems. In this article, we will take a closer look at the importance and impact of feedback in management.
Table of Content
- Feedback in Control System
- Types
- Effects of Feedback in Control System
- Effect of Feedback on Overall Gain
- Effect of Feedback on Stability
- Effect of Feedback on Sensitivity
- Effect of Feedback on Noise