生命維持系モデルのシミュレーション (第1報)

モデル化と制御方法の検討

抄録

This paper presents the modeling of CELSS (Controlled Ecological Life Support System) and the evaluation of its control method. The computer model of the CELSS, which revitalizes water and air by physico-chemical process, is developed and its system dynamics is analyzed. Then, we propose a control method for the CELSS by estimating control inputs based on fuzzy linear programming method. The factors to be controlled, or the stocks of water, oxygen, and so on, are quantitatively indicated in terms of membership function, and the distribution of power into the system is determined so that the minimum values of the stocks reach maximum. Once the power is distributed in the system properly, the values of control inputs are determined. The applicability of this control method is evaluated by investigating the influence of the disturbances due to human activities and other factors.