arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1803.03035math.OC
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带控制的输入到状态安全性Barrier Functions

Input-to-State Safety With Control Barrier Functions

Shishir Kolathaya, Aaron D. Ames

摘要:

本文提出了一种新的输入-状态安全控制障碍函数(ISSf-CBF)的概念,它保证了非线性动力系统在输入扰动下的安全性。类似于如何根据集合的前向不变性来指定安全性条件,输入到状态安全性(ISSf)条件根据稍大的集合的前向不变性来指定。在这种情况下,较大集合的不变性意味着状态保持在较小的安全集合内或非常接近较小的安全集合;并且这种接近程度受干扰的大小限制。这封信的主要贡献是用于获得一个有效的ISSf-CBF的方法,给定的控制障碍函数(CBF)。还将提供相关的通用控制律。最后,我们将研究统一的二次规划(QP),结合控制李雅普诺夫函数(CLF)和ISSf-CBF,以获得一个单一的控制律,确保系统的安全性和稳定性的输入干扰。

英文摘要:

This letter presents a new notion of input-to-state safe control barrier functions (ISSf-CBFs), which ensure safety of nonlinear dynamical systems under input disturbances. Similar to how safety conditions are specified in terms of forward invariance of a set, input-to-state safety (ISSf) conditions are specified in terms of forward invariance of a slightly larger set. In this context, invariance of the larger set implies that the states stay either inside or very close to the smaller safe set; and this closeness is bounded by the magnitude of the disturbances. The main contribution of the letter is the methodology used for obtaining a valid ISSf-CBF, given a control barrier function (CBF). The associated universal control law will also be provided. Towards the end, we will study unified quadratic programs (QPs) that combine control Lyapunov functions (CLFs) and ISSf-CBFs in order to obtain a single control law that ensures both safety and stability in systems with input disturbances.

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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