AI 中文总结
针对现有开环模型CBF可能削弱鲁棒性的问题，提出CLM-CBF框架，在参考层面保障飞行包线安全，无需修改控制律，便于模块化集成。
AI 中文摘要
确保航空航天系统在规定的飞行包线极限内运行是现代飞行控制架构的基本要求。飞行包线保护旨在防止气动和结构约束被违反，从而降低失速和过大载荷系数等风险。控制障碍函数（Control Barrier Functions, CBFs）已成为一种通过确保系统状态保持在规定安全集内来强制安全的原则性工具。在大多数现有方法中，安全约束是基于系统的开环模型在控制输入层面施加的。虽然这种基于开环模型的CBF公式化方法支持模块化设计，但它可能会改变闭环系统动力学，从而可能削弱鲁棒性保证并增加与现有飞行控制架构集成的复杂性。本文提出了一种用于飞行包线保护的基于闭环模型的控制障碍函数（Closed-Loop Model-Based Control Barrier Function, CLM-CBF）框架。其核心思路是利用闭环系统的显式模型在参考层面强制安全，从而保留底层控制器的稳定性和鲁棒性特性。这种公式化方法能够在不修改控制律的情况下实现安全滤波，便于模块化集成和对现有系统的改造升级。
英文摘要
Ensuring operation of aerospace systems within prescribed flight envelope limits is a fundamental requirement for modern flight control architectures. Flight envelope protection aims to prevent violations of aerodynamic and structural constraints, thereby mitigating risks such as stall and excessive load factors. Control barrier functions (CBFs) have emerged as a principled tool for enforcing safety by ensuring that the system state remains within a prescribed safe set. In most existing approaches, safety constraints are imposed at the control input-level based on an open-loop model of the system. While this open-loop model-based CBF formulation enables modular design, it may alter the closed-loop system dynamics, potentially compromising robustness guarantees and complicating integration into existing flight control architectures. This paper proposes a closed-loop model-based control barrier function (CLM-CBF) framework for flight envelope protection. The key idea is to enforce safety at the reference-level using an explicit model of the closed-loop system, thereby preserving the stability and robustness properties of the underlying controller. This formulation enables safety filtering without modifying the control law, facilitating modular integration and retrofitting into existing systems.
