Proportional Controller
In engineering and process control system, proportional controller is applied to the controlled variable to minimize the error proportionally to the difference between the desired value (setpoint, SP) and the measured value (process variable, PV). And from this technique or algorithm, we can create a proportional controller. This controller compares two values, difference SP and PV and the actual value, and minimizes the fluctuation of process variable. This is the fastest among the other controller but it can not always bring the desired set point of the system.
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.