Examples of Proportional controller
P only controller or proportional controller is a closed loop feedback control system, where the controller adjust its output based on the difference between setpoint and process variable. So here are some examples of P only controller along with explanation and diagram.
- Fly-ball governor : The fly-ball governor is an example of proportional controller. There are some balls which rises with the speed of flow, and blocks the flow, and this is how it controls the flow rate.
- Adaptive cruise control : Adaptive cruise control is a widely recognized application of proportional control. In adaptive cruise control systems, the throttle input is continuously adjusted to respond to changes in road conditions, including both declining gradients and increasing momentum. Moreover, the vehicle’s throttle is dynamically regulated based on the distance to the vehicles ahead. In situations requiring emergency collision avoidance, a distinct proportional control system is engaged to gently apply the brakes when the proximity to a lead vehicle becomes too close, or more forcefully when necessary.
Adaptive cruise control is like a smart driving helper in your car. It uses proportional control to adjust how much gas the car gets. This helps the car handle different situations, like going up or down hills and staying a safe distance from the cars in front. If you get too close to any car, you can apply break to avoid any accidents and continue a smooth drive.
Proportional Controller in Control System
Controller is a combination of hardware device and software program in control system that manages the flow of data from one entity to another and generates required output . Their are several techniques or algorithms that uses in automation system to control a system. One of the type that is used in PID controller is Proportional controller or P-only controller. This is the simplest closed loop feedback control.