Aplicação da tecnologia de agentes de planejamento em operações de satélites / Applying the planning agent tecnology in satellite operations

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

14/03/2006

RESUMO

Research for automatic solutions for space operations is a real need for all space agencies in order to reduce space mission costs. Nowadays, a significant parcel of satellite operation activities at the National Institute for Space Research (INPE) is still performed manually. Finding automated alternatives for the satellite operation activities at INPE is an important issue in order to maintain the currently satisfactory performance of these activities, despite the scarcity of financial resources. In this work an architecture of an Intelligent Planning System for the automatic generation of satellite flight operation plans (PlanIPOV) is proposed. This architecture employs the planning technology of Artificial Intelligence (AI) in the automatic Flight Operation Plans (FOPs) generation for the routine operational phase of a satellite. The PlanIPOV system proposes the use of Planning Domain Definition Language (PDDL) to model the knowledge base of satellite tracking domain and also the automatic generation of problem files. A prototype was developed based on the PlanIPOV architecture using the PDDL2.2 language and Local Searching for Planning Timed initial literal and Derived predicates (LPG-TD) planner. It was tested for the tracking domain of the satellites currently being controlled by INPE (SCD1, SCD2 and CBERS2). The FOPs generated by the prototype were compared with the real INPE FOPs and the obtained results were satisfactory. During the knowledge base and prototype development, some limitations were observed in the utilization of the planning technology and solutions were adopted to overcome them to allow the automatic generation of FOP. Additionally, the research work leads to the development of a process to model a knowledge base for a generic planning problem and a framework of classes, which has the aim to generate automatic problem files.

ASSUNTO(S)

inteligência artificial planejamento planos de vôo representação do conhecimento projeto de sistemas computacionais computer science artificial inteligence planning flight plans knowledge representation computer systems design

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