ORN-CBF: Learning Observation-conditioned Residual Neural Control Barrier Functions via Hypernetworks

Fuente: arXiv
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Autori principali: Derajić, Bojan, Bernhard, Sebastian, Hönig, Wolfgang
Natura: Preprint
Pubblicazione: 2025
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author Derajić, Bojan
Bernhard, Sebastian
Hönig, Wolfgang
author_facet Derajić, Bojan
Bernhard, Sebastian
Hönig, Wolfgang
contents Control barrier functions (CBFs) have been demonstrated as an effective method for safety-critical control of autonomous systems. Although CBFs are simple to deploy, their design remains challenging, motivating the development of learning-based approaches. Yet, issues such as suboptimal safe sets, applicability in partially observable environments, and lack of rigorous safety guarantees persist. In this work, we propose observation-conditioned neural CBFs based on Hamilton-Jacobi (HJ) reachability analysis, which approximately recover the maximal safe sets. We exploit certain mathematical properties of the HJ value function, ensuring that the predicted safe set never intersects with the observed failure set. Moreover, we leverage a hypernetwork-based architecture that is particularly suitable for the design of observation-conditioned safety filters. The proposed method is examined both in simulation and hardware experiments for a ground robot and a quadcopter. The results show improved success rates and generalization to out-of-domain environments compared to the baselines.
format Preprint
id arxiv_https___arxiv_org_abs_2509_16614
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle ORN-CBF: Learning Observation-conditioned Residual Neural Control Barrier Functions via Hypernetworks
Derajić, Bojan
Bernhard, Sebastian
Hönig, Wolfgang
Robotics
Machine Learning
Systems and Control
Control barrier functions (CBFs) have been demonstrated as an effective method for safety-critical control of autonomous systems. Although CBFs are simple to deploy, their design remains challenging, motivating the development of learning-based approaches. Yet, issues such as suboptimal safe sets, applicability in partially observable environments, and lack of rigorous safety guarantees persist. In this work, we propose observation-conditioned neural CBFs based on Hamilton-Jacobi (HJ) reachability analysis, which approximately recover the maximal safe sets. We exploit certain mathematical properties of the HJ value function, ensuring that the predicted safe set never intersects with the observed failure set. Moreover, we leverage a hypernetwork-based architecture that is particularly suitable for the design of observation-conditioned safety filters. The proposed method is examined both in simulation and hardware experiments for a ground robot and a quadcopter. The results show improved success rates and generalization to out-of-domain environments compared to the baselines.
title ORN-CBF: Learning Observation-conditioned Residual Neural Control Barrier Functions via Hypernetworks
topic Robotics
Machine Learning
Systems and Control
url https://arxiv.org/abs/2509.16614