What is the purpose of a sensor in a control system?

The purpose of a sensor in a control system is to provide feedback. Sensors are critical components in control systems because they measure physical properties such as temperature, pressure, flow, or level and transmit this information back to the controller. This feedback allows the control system to assess the current state of the process and make necessary adjustments to maintain desired performance or response levels.

Continuous feedback from sensors enables the control system to respond dynamically to changes in the environment or process conditions, ensuring efficient and accurate operation. This feedback loop is essential for achieving stability and ensuring that the system operates within defined parameters. Without the input from sensors, the control system would lack the necessary information to make informed decisions about how to adjust the control outputs.