Power Resource Allocation in Electrically Closed System Using Hybrid Control under Multi-Agent System

Abstract

Power supply in an electrically closed system such as a spacecraft is strictly constrained. Conventionally, constrained power in spacecraft is supplied to internal subsystems based on their expected demands. When designing, a spacecraft designer assumes those subsystems as static system even in cases that some of the subsystems behave dynamically. In that way, however, power margins are often overly estimated to avoid scarce power supply. This paper proposes a novel power method using hybrid control under multi-agent structure in order to fully utilize constrained power of an electrically closed system. The proposed system structure owns agents that have two modes; static mode and dynamic mode. In static mode, power request from an agent is simply based on its referenced status under steady state. In dynamic mode, an agent requests power based on optimized input pattern that is calculated under transient state. Among agents with the two modes, ones with dynamic mode receive more power than static ones because optimally-calculated input patterns in dynamic mode are delicate while behaviors in static modes are stable even when input patterns slightly change. This paper demonstrates the effectiveness of the proposed method by simulation compared to results with central computing system.