This study calculated the desired actuator of the control valve that aimed to control the water flow to the field. In this paper, P, PI, and PID controllers are optimized by the Genetic Algorithm (GA) optimization technique copied from the process of biological evolution. Drip irrigation is a method of watering plants with a volume of water approaching the consumptive use (CU) of the plants. In this drip irrigation system, controlled items are humidity and pressure sensors obtained from the readings of those sensors. By determining the setpoint and using P, PI, or PID controller applied, the control system’s performance could be defined. The output response of the control system of Drip Irrigation is good; only the value of the setpoint has not been reached. Therefore proportional controller (Kp) is needed as the gain of the system. The best value of the P controller (Kp) for the drip irrigation system is 74.95, where the max overshoot is only 0.0231 bar or 1.92%, and the steady-state condition has been reached at 24.95 seconds with no error steady state.

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H. S. Alam, T. Haiyunnisa and Bahrudin, “Comparative analysis of P, Pi, and PID controller optimized by genetic algorithm on controlling drip irrigation system,” International Journal of Technology and Engineering Studies, vol. 1, no. 4, pp. 117-122, 2015.