Advanced space programs will require automated control of thermal control systems (TCS), both in space and on planetary surfaces, with minimum use of electric power. Further, details of the thermal control processes are likely to be uncertain or even changing over time. Phase I will define and demonstrate the feasibility of an adaptive fuzzy logic-based controller for TCS. The definition will include enumeration of the time-varying factors causing energy use, specification of sensors and controls for these factors, fuzzy logic or related control techniques for driving the controls, and adaptive techniques. An experiment to test the concepts in controlling the thermal (heating, ventilation, and air conditioning) system for a NASA building as a means of evaluating the design methodology and testing achievable power savings prior to applications to spacecraft and lunar or planetary bases will also be defined.Adaptive fuzzy-logic thermal-system controllers could be used to reduce energy requirements in existing or new commercial buildings. The adaptive feature would overcome objections to previous computer controls due to high programming costs. If the cost could be reduced sufficiently, there could be applications for home systems.fuzzy logic applications, control, thermal systems, adaptive controlSTATUS: Phase I Only
