Modeling satellite battery aging for an operational satellite simulator |
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Authors: | Italo Pinto Rodrigues Priscylla AS Oliveira Ana Maria Ambrosio Ronan AJ Chagas |
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Institution: | 1. National Institute for Space Research, 1758 Av dos Astronautas, 12227-010 São José dos Campos, Brazil;2. Omega 7 Systems, Avenida Shishima Hifumi 2911, Sala 412B, Parque Tecnológico UNIVAP, 12244-000, São José dos Campos, Brazil |
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Abstract: | During the satellite’s operations, simulation tools perform an important role in ensuring the space mission success. In this sense, the models implemented in the context of an operational satellite simulator that enables analysis of health status and maintenance during operations shall reflect the current satellite behavior with high fidelity. Moreover, it is complicated to obtain all analytical models of a satellite’s disciplines, considering its aging. This paper proposes an Artificial Neural Network (ANN) to reproduce the battery voltage behavior of a large sun-synchronous remote sensing satellite, the CBERS-4, currently in operation. Using the genetic algorithm to find the best network architecture of ANN, the neural model for this application presented an error of less than 1%, demonstrating its feasibility to obtain a high fidelity model for an operational simulator enabling extend analyses. The paper addresses advanced techniques aligned with the space industry’s future, increasing the ability to analyze a large amount of data and improve the space system’s operation. |
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Keywords: | Artificial neural network Data-driven modeling Operational satellite simulator Battery aging Spacecraft Operations |
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