Hierarchical Determination of Repair Order for Complex Material Circulation Control on Life Support System

An Advanced Life Support System (ALSS) achieves life support in the ultimate environment by regenerating and circulating materials in the system. Because of their complexity of material circulation in ALSS, it is difficult to control whole-system material circulations and to handle on abnormal states in the system. Because of this, it is recommended that the material circulation in the system is controlled automatically, and if unpredictable events occur, it is preferable that the system adapts autonomously. We had proposed new autonomous control method based on a hierarchical control, automatic scheduling, and Multi-Agent Learning Control method, and had applied to a simple ALSS model. We also considered if a number of equipment have a trouble at the same time, how to be reacted autonomously by control system. We constructed the mechanism to determine what order should the problem be handled by control system automatically. In this year, we blush up our mechanism of automatic repair order determination. Especially, by applying to hierarchical determination to decision of repair order also, we applied to our mechanism to more complex circulation control system while suppressing the explosive increase in the amount of calculation.