arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.16144eess.SYcs.SY
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面向障碍约束控制的安全事件触发高斯过程学习

Safe Event-triggered Gaussian Process Learning for Barrier-Constrained Control

Armin Lederer, Azra Begzadić, Sandra Hirche, Jorge Cortés, Sylvia Herbert

AI总结:

针对基于控制障碍函数的控制方法依赖精确系统动力学的局限,提出未知控制仿射系统下高斯过程模型的安全事件触发学习方法,通过触发时刻有限激励保障信息增益与安全条件可行性,概率保证安全且排除Zeno行为,经仿真验证有效。

摘要:

尽管控制障碍函数(CBFs)被用于解决安全性问题,但基于CBFs的控制综合方法通常依赖于精确的系统动力学。这是一个关键局限,因为复杂系统的动力学往往并非完全已知。有监督机器学习技术通过从数据中推断模型,为缓解这一缺陷带来了巨大前景。我们提出了一种新方法,用于未知控制仿射系统的基于CBF的连续时间控制中的高斯过程模型安全事件触发学习。通过在触发时刻施加有限激励,我们的方法确保了足够的信息增益,以高概率维持基于CBF的安全条件的可行性。该方法基于合适的GP先验对安全性进行概率保证,并排除了触发机制中的Zeno行为。仿真结果验证了所提方法与理论的有效性。

英文摘要:

While control barrier functions (CBFs) are employed in addressing safety, control synthesis methods based on them generally rely on accurate system dynamics. This is a critical limitation, since the dynamics of complex systems are often not fully known. Supervised machine learning techniques hold great promise for alleviating this weakness by inferring models from data. We propose a novel \revision{approach for safe event-triggered learning of Gaussian process models in CBF-based continuous-time control for unknown control-affine systems. By applying a finite excitation at triggering times, our approach ensures a sufficient information gain to maintain the feasibility of the CBF-based safety condition with high probability. Our approach probabilistically guarantees safety based on a suitable GP prior and rules out} Zeno behavior in the triggering scheme. The effectiveness of the proposed approach and theory is demonstrated in simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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