MPPT aware task scheduling for nanosatellites using MIP-based ReLU proxy models

CA Rigo, LO Seman, E Morsch Filho… - Expert Systems with …, 2023 - Elsevier
This paper investigates the use of Valid Inequalities (VIs) and Rectified Linear Unit (ReLU)
neural networks in addressing the Offline Nanosatellite Task Scheduling (ONTS) problem …

Task scheduling for optimal power management and quality-of-service assurance in CubeSats

CA Rigo, LO Seman, E Camponogara, E Morsch Filho… - Acta Astronautica, 2021 - Elsevier
The value and overall efficacy of a satellite mission are directly affected by its task
scheduling strategy and the associated amount of work performed in orbit. Despite subject to …

A branch-and-price algorithm for nanosatellite task scheduling to improve mission quality-of-service

CA Rigo, LO Seman, E Camponogara… - European Journal of …, 2022 - Elsevier
Satellite scheduling is concerned with the assignment of start and finish times for tasks while
considering the mission objective, available resources, and constraints. This scheduling …

Battery-aware contact plan design for LEO satellite constellations: The ulloriaq case study

JA Fraire, G Nies, C Gerstacker… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
Power demands of communication technologies between LEO small-satellites are difficult to
counterbalance by solar infeed and on-board battery storage, due to size and weight …

A nanosatellite task scheduling framework to improve mission value using fuzzy constraints

CA Rigo, LO Seman, E Camponogara… - Expert Systems with …, 2021 - Elsevier
Task scheduling is an effective approach to increase the value of a satellite mission, which
leads to improved resource management and quality of service. This work improves the …

Irradiation flux modelling for thermal–electrical simulation of CubeSats: Orbit, attitude and radiation integration

EM Filho, LO Seman, CA Rigo, VP Nicolau… - Energies, 2020 - mdpi.com
During satellite development, engineers need to simulate and understand the satellite's
behavior in orbit and minimize failures or inadequate satellite operation. In this sense, one …

On the automation, optimization, and in-orbit validation of intelligent satellite constellation operations

G Stock, JA Fraire, H Hermanns, E Cruz… - arxiv preprint arxiv …, 2022 - arxiv.org
Recent breakthroughs in technology have led to a thriving" new space" culture in low-Earth
orbit (LEO) in which performance and cost considerations dominate over resilience and …

On the scalability of battery‐aware contact plan design for LEO satellite constellations

JA Fraire, C Gerstacker, H Hermanns… - … Journal of Satellite …, 2021 - Wiley Online Library
Size and weight limitations of low‐Earth orbit (LEO) small satellites make their operation rest
on a fine balance between solar power infeed and power demands of supporting …

Managing fleets of LEO satellites: Nonlinear, optimal, efficient, scalable, usable, and robust

G Stock, JA Fraire, T Mömke… - … on Computer-Aided …, 2020 - ieeexplore.ieee.org
Size and weight limitations of low-earth orbit (LEO) small satellites make their operation rest
on a fine balance between solar power infeed and power demands of communication …

HPnGs go non-linear: Statistical dependability evaluation of battery-powered systems

C Pilch, M Niehage, A Remke - 2018 IEEE 26th International …, 2018 - ieeexplore.ieee.org
Hybrid Petri nets with general transitions (HPnGs) provide a formalism for modeling safety-
critical systems and evaluating their dependability with means of model checking. HPnGs …