METHOD FOR DETERMINING THE PROPORTIONAL INTEGRAL PARAMETERS OF A PLANT NUTRITION SYSTEM FOR A PID CONTROLLER

Abstract

This invention determines the value of the proportional-integral-differential parameter set Kp / Ki / Kd using a genetic algorithm of a PID controller when controlling x and y for a crop nutrient supply system in an open field, benefiting farmers. Specifically, this method evaluates the impact of the PID controller's convergence time on farmer benefit and combines it with the adaptive function of the genetic algorithm through control cost. This invention is applicable to automatic nutrient supply systems for all types of crops (except mangroves and flooded areas) in all open fields worldwide with any xtarget and ytarget values. This method does not require excessive memory, has simple calculations, and can be easily implemented on IoT hardware.