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arXiv 2404.09007eess.SYcs.SY
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随机动态系统安全概率不变性验证框架

A Framework for Safe Probabilistic Invariance Verification of Stochastic Dynamical Systems

Taoran Wu, Yiqing Yu, Bican Xia, Ji Wang, Bai Xue

AI总结:

本文提出面向离散与连续时间随机动态系统的安全概率不变性验证框架,利用 Doob 非负超鞅不等式或方程松弛构建优化,并通过半定规划示例验证其有效性。

摘要:

通过集合不变性确保安全已被证明在各类机器人和控制应用中是一种有价值的方法。本文提出一个综合框架,用于在无限时间范围内对离散时间和连续时间随机动态系统进行安全概率不变性验证。目标是确定给定安全集合和初始状态集合的活性概率下界与上界。活性概率表示系统从初始集合中的某个状态出发,无限期保持在安全集合内的可能性。为解决该问题,我们提出了用于验证离散时间和连续时间随机动态系统中安全概率不变性的优化方法。这些优化通过两种方式构建:使用基于 Doob 非负超鞅不等式的方法,或松弛文献[30,32]中描述的方程;这些方程能够精确刻画系统在避开不安全状态的同时到达目标集合的概率。最后,我们通过若干使用半定规划工具的示例证明了这些优化方法的有效性。

英文摘要:

Ensuring safety through set invariance has proven to be a valuable method in various robotics and control applications. This paper introduces a comprehensive framework for the safe probabilistic invariance verification of both discrete- and continuous-time stochastic dynamical systems over an infinite time horizon. The objective is to ascertain the lower and upper bounds of liveness probabilities for a given safe set and set of initial states. The liveness probability signifies the likelihood of the system remaining within the safe set indefinitely, starting from a state in the initial set. To address this problem, we propose optimizations for verifying safe probabilistic invariance in discrete-time and continuous-time stochastic dynamical systems. These optimizations are constructed via either using the Doob's nonnegative supermartingale inequality-based method or relaxing the equations described in [30,32], which can precisely characterize the probability of reaching a target set while avoiding unsafe states. Finally, we demonstrate the effectiveness of these optimizations through several examples using semi-definite programming tools.

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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