Control System for Nutrient Solution of Nutrient Film Technique Using Fuzzy Logic
Abstract: Nutrient Film
Technique (NFT) is one of the hydroponic systems, which the nutrient is
circulated through root of the plants. Electrical conductivity (EC) of nutrient
solution on hydroponic culture is a crucial point that determines the growth
rate of the plants and quality of the products. The purpose of this research is
to design the control system for nutrient solution to maintain the EC of
nutrient solution using Arduino.Fuzzy logic control system was used with EC
error and volume of nutrient solution as inputs. Model of tomato cultivation
based on certain reference was simulated with scale 1:1440 for cultivation time.
This model was used as disturbance of nutrient solution EC due nutrient uptake.
The result of observation showed that system could reach setpoint after 130
seconds when the setpoint changes from 1.7 mS/cm to 1.6 mS/cm and 207 seconds
from 1.6 mS/cm to 1.9 mS/cm. During observation, RSME value of the system while
steady state was 0.005 mS/cm.
Author: Muhammad Naufal Rauf
Ibrahim, Mohamad Solahudin, Slamet Widodo
Journal Code: jptkomputergg150169