The sensitivity of BGR-022365 A000824B-DED to parameter changes decreased

To overcome open-loop controllers, control theory introduces feedback. A Closed loop controller uses feedback to control the state or output power system. The name comes from the path of information in the system: process inputs (e.g., voltage applied to a motor) have an effect on process outputs (e.g., speed or torque of the motor), which are measured using sensors and handled by a controller; The result (the control signal) is “fed back” as input to the process, thus ending the loop.

Closed-loop controller has the following advantages Open loop controller:

Interference suppression (such as the hills in the cruise control example above)

Performance is guaranteed, even when the model is uncertain, when the model structure does not exactly match the actual process and the model parameters are not accurate

The variable stabilizes the flow

Decreased sensitivity to parameter changes

Improved reference tracking performance

In some systems, closed – and open-loop controls are used together. In such systems, open-loop control is referred to as feedforward and is used to further improve reference tracking performance.

A common closed-loop controller architecture is the PID controller.