arXiv:2503.00191cs.ROcs.AI2025-03AAAI被引 1

为视觉控制的神经网络控制器提供可验证的安全保障。

Learning Vision-Based Neural Network Controllers with Semi-Probabilistic Safety Guarantees

  • 结合可达性分析与生成网络,实现高效安全验证。
  • 在多个仿真与真实环境中达成形式化安全约束。
  • 适合追求高安全性自动驾驶系统的研究者使用。

在基于视觉的自主系统中,由于图像输入维度高且系统状态与视觉表征之间的关系未知,确保安全性仍是关键挑战。现有基于学习的控制方法通常缺乏形式化安全保证。为此,本文提出一种新型半概率验证框架,将可达性分析、条件生成网络与无分布尾部界相结合,实现对视觉神经网络控制器的高效、可扩展验证。进一步设计了一种基于梯度的训练方法,包含新颖的安全损失函数、安全感知的数据采样策略以及课程学习,以高效合成符合半概率框架的安全控制器。在X-Plane 11飞机着陆仿真、CARLA模拟的自动驾驶车道保持、真实视觉丰富的微型环境下的F1Tenth车辆车道保持,以及Airsim模拟的无人机导航与避障任务中,实验验证了该方法在保持优异正常性能的同时,有效实现了形式化安全保证。

原文摘要 · Abstract (English)

Ensuring safety in autonomous systems with vision-based control remains a critical challenge due to the high dimensionality of image inputs and the fact that the relationship between true system state and its visual manifestation is unknown. Existing methods for learning-based control in such settings typically lack formal safety guarantees. To address this challenge, we introduce a novel semi-probabilistic verification framework that integrates reachability analysis with conditional generative networks and distribution-free tail bounds to enable efficient and scalable verification of vision-based neural network controllers. Next, we develop a gradient-based training approach that employs a novel safety loss function, safety-aware data-sampling strategy to efficiently select and store critical training examples, and curriculum learning, to efficiently synthesize safe controllers in the semi-probabilistic framework. Empirical evaluations in X-Plane 11 airplane landing simulation, CARLA-simulated autonomous lane following, F1Tenth vehicle lane following in a physical visually-rich miniature environment, and Airsim-simulated drone navigation and obstacle avoidance demonstrate the effectiveness of our method in achieving formal safety guarantees while maintaining strong nominal performance.

视觉控制安全验证神经网络自动驾驶

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