抄録
Fuzzy logic is able to make use of human behaviour and experience. In this paper, fuzzy control is applied to the adjustment of pH of the solution in deep hydroponic system, resulting its utilization for hydroponic automation, where pH of the solution is controlled by injecting the acid in the storage tank.
Applying the fuzzy logic to the pH-control, the same control pattern of acid injection as a skilled human operator's technique is obtained. Furthermore the controlled characteristics is superior to that of traditional control in its stability.
