In a control system, what does the final element refer to?

The final element in a control system refers to the device that is controlled by the energy supplied from the system. It is the component that executes the action needed to achieve the desired output or system behavior. For example, in a wastewater treatment plant, the final element could be a valve that opens or closes to manage the flow of wastewater, based on the instructions it receives from the control system.

In a typical control process, the final element receives a signal from the controller, which is adjusted based on feedback from measuring devices. This mechanism culminates in the final element carrying out the necessary adjustments to maintain or reach desired operational conditions. Understanding the role of the final element is crucial for effective control, as it directly affects the system's performance.