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arXiv 2403.02508eess.SYcs.ROcs.SYmath.DS
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基于控制障碍函数的固定翼飞机避碰与地理围栏

Collision Avoidance and Geofencing for Fixed-wing Aircraft with Control Barrier Functions

Wichita State University(威奇托州立大学);Nodein Autonomy Corporation(诺丁自主公司);Parallax Advanced Research(视差高级研究公司);Air Force Research Laboratory(空军研究实验室);California Institute of Technology(加州理工学院)

Tamas G. Molnar, Suresh K. Kannan, James Cunningham, Kyle Dunlap, Kerianne L. Hobbs, Aaron D. Ames

AI总结:

本文针对固定翼飞机的避碰与地理围栏任务,提出了一种基于控制障碍函数(CBFs)的运行时保障(RTA)安全滤波器框架,在运动学和高保真动力学模型上验证了其能安全执行多重安全约束。

摘要:

在航空航天控制中,安全关键性故障往往会导致致命后果。因此,飞机上的控制系统必须确保对安全约束的严格满足,最好能提供安全行为的形式化保证。本文建立了固定翼飞机在避碰和地理围栏任务中的安全关键控制。开发了一种控制框架,其中运行时保障(RTA)系统在必要时调节飞机的标称飞行控制器,以防止其与其他飞机相撞或越过空间边界(地理围栏)。该RTA被构建为使用控制障碍函数(CBFs)的安全滤波器,具有安全行为的形式化保证。针对非线性运动学固定翼飞机模型,构建并比较了CBFs。所提出的基于CBF的控制器展示了安全执行同时避碰和地理围栏的能力,这一点已通过在运动学模型和高保真动力学模型上的仿真得到验证。

英文摘要:

Safety-critical failures often have fatal consequences in aerospace control. Control systems on aircraft, therefore, must ensure the strict satisfaction of safety constraints, preferably with formal guarantees of safe behavior. This paper establishes the safety-critical control of fixed-wing aircraft in collision avoidance and geofencing tasks. A control framework is developed wherein a run-time assurance (RTA) system modulates the nominal flight controller of the aircraft whenever necessary to prevent it from colliding with other aircraft or crossing a boundary (geofence) in space. The RTA is formulated as a safety filter using control barrier functions (CBFs) with formal guarantees of safe behavior. CBFs are constructed and compared for a nonlinear kinematic fixed-wing aircraft model. The proposed CBF-based controllers showcase the capability of safely executing simultaneous collision avoidance and geofencing, as demonstrated by simulations on the kinematic model and a high-fidelity dynamical model.

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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