What role does feedback play in a control system?

Feedback is a crucial component in a control system as it helps maintain the desired output by comparing the actual output to the target output. When the system's output is monitored, feedback provides information about how well the system is performing relative to its set goals. If there is a deviation from the desired output, the feedback mechanism can inform the control system to make adjustments to the inputs or processes to bring the output back to the desired level.

This process creates a loop where continuous adjustments can be made to ensure stability and accuracy in the system’s performance. For instance, in temperature control systems, feedback from temperature sensors informs the controller whether to increase or decrease energy to achieve the desired temperature. By ensuring that the output aligns with the intended goal, feedback enhances the reliability and effectiveness of the control system.