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arXiv 2202.02583eess.SYcs.FLcs.SY
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随机信号的时间鲁棒性

Temporal Robustness of Stochastic Signals

Lars Lindemann, Alena Rodionova, George J. Pappas

摘要:

研究了随机信号的时间鲁棒性。这一主题是特别感兴趣的交织过程,如多代理系统的通信和个人代理诱导时间的不确定性。对于一个确定性的信号和一个给定的规格,我们首先引入同步和异步的时间鲁棒性来量化信号的鲁棒性相对于同步和异步的时间偏移在它的子信号。然后,我们定义的时间鲁棒性风险,通过调查的时间鲁棒性的实现的随机信号。该定义可以解释为与随机信号相关的风险,即不能及时稳健地满足规范。在该定义中,允许诸如信号时序逻辑规范的一般形式的规范。我们展示了如何从风险值的数据中估计时间鲁棒性风险。时间鲁棒性风险的有用性强调了理论和经验证据。特别是,我们提供了各种数值案例研究,包括自动驾驶中的T形交叉口场景。

英文摘要:

We study the temporal robustness of stochastic signals. This topic is of particular interest in interleaving processes such as multi-agent systems where communication and individual agents induce timing uncertainty. For a deterministic signal and a given specification, we first introduce the synchronous and the asynchronous temporal robustness to quantify the signal's robustness with respect to synchronous and asynchronous time shifts in its sub-signals. We then define the temporal robustness risk by investigating the temporal robustness of the realizations of a stochastic signal. This definition can be interpreted as the risk associated with a stochastic signal to not satisfy a specification robustly in time. In this definition, general forms of specifications such as signal temporal logic specifications are permitted. We show how the temporal robustness risk is estimated from data for the value-at-risk. The usefulness of the temporal robustness risk is underlined by both theoretical and empirical evidence. In particular, we provide various numerical case studies including a T-intersection scenario in autonomous driving.

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