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arXiv 2108.10491eess.SYcs.SY
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使用积分二次约束的含未建模动态的控制屏障函数

Control Barrier Functions With Unmodeled Dynamics Using Integral Quadratic Constraints

Peter Seiler, Mrdjan Jankovic, Erik Hellstrom

AI总结:

针对被控对象输入端未建模动态可能引发安全违规的问题,提出结合控制屏障函数与alpha-IQC的控制设计方法,在时域界定未建模动态特性并纳入约束保障安全,通过简单示例验证了有效性。

摘要:

本文提出一种控制设计方法,可在被控对象输入端存在未建模动态的情况下保障系统安全性。该方法结合了控制屏障函数(CBFs)与积分二次约束(IQCs)。控制器设计中常采用简化的低阶模型,而寄生性未建模动态(如执行器动态、时滞等)可能导致安全违规。所提方法利用alpha-IQC在时域内对这些未建模动态的输入输出行为进行界定,随后将alpha-IQC纳入CBF约束以确保安全性。该方法通过一个简单示例得到了验证。

英文摘要:

This paper presents a control design method that achieves safety for systems with unmodeled dynamics at the plant input. The proposed method combines control barrier functions (CBFs) and integral quadratic constraints (IQCs). Simplified, low-order models are often used in the design of the controller. Parasitic, unmodeled dynamics (e.g. actuator dynamics, time delays, etc) can lead to safety violations. The proposed method bounds the input-output behavior of these unmodeled dynamics in the time-domain using an alpha-IQC. The alpha-IQC is then incorporated into the CBF constraint to ensure safety. The approach is demonstrated with a simple example.

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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