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Safe exploration in model-based reinforcement learning using control barrier functions
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DOI：10.1016/j.automatica.2022.110684.png)
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摘要
En 中文
This paper develops a model-based reinforcement learning (MBRL) framework for learning online the value function of an infinite-horizon optimal control problem while obeying safety constraints expressed as control barrier functions (CBFs). Our approach is facilitated by the development of a novel class of CBFs, termed Lyapunov-like CBFs (LCBFs), that retain the beneficial properties of CBFs for developing minimally-invasive safe control policies while also possessing desirable Lyapunov-like qualities such as positive semi-definiteness. We show how these LCBFs can be used to augment a learning-based control policy to guarantee safety and then leverage this approach to develop a safe exploration framework in a MBRL setting. We demonstrate that our approach can handle more general safety constraints than comparative methods via numerical examples.(c) 2022 Elsevier Ltd. All rights reserved.
Keyword:
Adaptive control
Control barrier functions
Reinforcement learning
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期刊
IF:
5.9
论文数:
1.2W
被引数:
5.2W
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