A review of safe reinforcement learning: Methods, theory and applications

S Gu, L Yang, Y Du, G Chen, F Walter, J Wang… - arxiv preprint arxiv …, 2022 - arxiv.org
Reinforcement Learning (RL) has achieved tremendous success in many complex decision-
making tasks. However, safety concerns are raised during deploying RL in real-world …

A review of safe reinforcement learning: Methods, theories and applications

S Gu, L Yang, Y Du, G Chen, F Walter… - … on Pattern Analysis …, 2024 - ieeexplore.ieee.org
Reinforcement Learning (RL) has achieved tremendous success in many complex decision-
making tasks. However, safety concerns are raised during deploying RL in real-world …

Autonomous spacecraft collision avoidance with a variable number of space debris based on safe reinforcement learning

C Mu, S Liu, M Lu, Z Liu, L Cui, K Wang - Aerospace Science and …, 2024 - Elsevier
The avoidance of multiple space debris collisions by autonomous spacecraft has garnered
significant interests worldwide. Applying deep reinforcement learning (DRL) to autonomous …

Safe reinforcement learning benchmark environments for aerospace control systems

UJ Ravaioli, J Cunningham, J McCarroll… - 2022 IEEE …, 2022 - ieeexplore.ieee.org
Recent advancements in reinforcement learning techniques demonstrate an ability to make
decisions in high dimen-sional state spaces and complex real-time strategy games. In …

Space trusted autonomy readiness levels

KL Hobbs, JB Lyons, MS Feather… - 2023 IEEE …, 2023 - ieeexplore.ieee.org
Technology Readiness Levels are a mainstay for organizations that fund, develop, test,
acquire, or use technologies. Technology Readiness Levels provide a standardized …

Deep reinforcement learning for autonomous spacecraft inspection using illumination

D van Wijk, K Dunlap, M Majji, KL Hobbs - arxiv preprint arxiv:2308.02743, 2023 - arxiv.org
This paper investigates the problem of on-orbit spacecraft inspection using a single free-
flying deputy spacecraft, equipped with an optical sensor, whose controller is a neural …

Ablation study of how run time assurance impacts the training and performance of reinforcement learning agents

N Hamilton, K Dunlap, TT Johnson… - 2023 IEEE 9th …, 2023 - ieeexplore.ieee.org
Reinforcement Learning (RL) has become an increasingly important research area as the
success of machine learning algorithms and methods grows. To combat the safety concerns …

Comparing run time assurance approaches for safe spacecraft docking

K Dunlap, M Hibbard, M Mote… - IEEE Control Systems …, 2021 - ieeexplore.ieee.org
Run Time Assurance (RTA) systems are online safety verification techniques that filter the
output of a primary controller to assure safety. RTA approaches are used in safety-critical …

Reinforcement learning based robust tracking control for unmanned helicopter with state constraints and input saturation

Y Feng, Y Zhou, HW Ho - Aerospace Science and Technology, 2024 - Elsevier
In this paper, an online adaptive optimal control scheme using reinforcement learning (RL)
methodology is developed with applications to helicopters in the presence of input …

Trajectory synthesis for the coordinated inspection of a spacecraft with safety guarantees

M Hibbard, M Cubuktepe, M Shubert, K Lang… - Journal of Guidance …, 2023 - arc.aiaa.org
As outer space becomes increasingly congested, there exists a growing need for auxiliary
spacecraft to perform support missions for existing satellites with guarantees for safety and …