PID Controller Designs for Interacting Water Level Process

Abstract

This paper presents PID controller design for interacting water level process. The pressure transmitter is used to sense the water level. Measurement of the pressure which the output is in the 4 -2 0 mA the voltage is then converted into on 1 -5 volt analog signal to digital to digital converter, 16-bit arithmetic processing over board Arduino Mega 2 5 6 0 to create a PID controller to turn on-off valve automatically. This project use a PID controller design using Characteristic Ratio Assignment method (CRA) for coupled-tank process and use to meet the prefect transient and steady-state response requirement.