7.1.5 - Describe the role of feedback in a control system.

Question 1

What is feedback in a control system?

Answer 1

Feedback occurs when the output of a system is used as input to adjust the system’s operation. It helps the system maintain its desired output by continuously monitoring and adjusting.

Question 2

What is the difference between open loop and closed loop systems?

Answer 2

In an open loop system, there is no feedback, meaning the system operates without adjusting its output. In a closed loop system, feedback is used to continuously adjust the system’s output.

Question 3

What are the 5 steps of a feedback loop?

Answer 3

1. Measurement of the system’s output, 2. Comparison of the measured output to the desired output, 3. Error calculation, 4. Adjustment of the system, 5. Repetition of the feedback loop.

Question 4

How does a closed loop system function?

Answer 4

A closed loop system uses feedback to adjust its operation. The output is continuously measured, compared to the setpoint, and adjusted to maintain desired performance.