Application of Proportional Controller
Proportional control often used in industrial automation such as speed control, pressure control, flow control, PH control, level control, position control. But their are some major use of P controller, which described below.
- Temperature control : Proportional controller can be used to maintain a specific temperature and get the desired output. In this system, the controller adjusts the heating element temperature or power at a specific point to control the overall temperature and keep the temperature at setpoint. The controller calculates the setpoint and the current temperature difference, and then applies it to the gain factor(Kp).
Setpoint --------->[P controller/temperature control]--------->heating element
- Level control : P-only controller often used in many industries to control a specific water level in a tank . the controller monitor the water level through sensor, and adjusts it with the setpoint.
Setpoint ---------> [P controller] -----------> value of water flow
- Pressure control : Proportional controller also used in pneumatic system to control a specific pressure in the system.
Setpoint ---------> [P controller] -----------> Control valve
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.