Safety Assessment for Autonomous Aerial Refueling Based on Reachability Analysis

基于可达性分析的自主空中加油安全评估

Autonomous aerial refueling(AAR)has demonstrated significant benefits to aviation by extending the aircraft range and endurance.It is of significance to assess system safety for autonomous aerial refueling.In this paper,the reachability analysis method is adopted to assess system safety.Due to system uncertainties,the aerial refueling system can be considered as a stochastic system.Thus,probabilistic reachability is considered.Since there is a close relationship between reachability probability and collision probability,the collision probability of the AAR system is analyzed by using reachability analysis techniques.Then,the collision probability is accessed by using the Monte-Carlo experiment method.Finally,simulations demonstrate the effectiveness of the proposed safety assessment method.

自主空中加油(Autonomous aerial refueling,AAR)可以扩展飞机的航程和续航能力,为航空业带来巨大效益,对自主空中加油系统进行安全评估具有重要意义。本文采用可达性分析方法来评估系统安全性。由于系统不确定性,空中加油系统可视为一个随机系统,因此考虑概率可达性。由于可达性概率与碰撞概率有着密切的关系,本文利用可达性分析技术对自主空中加油系统的碰撞概率进行分析。然后,利用蒙特卡罗实验方法来获取碰撞概率。最后,通过仿真展示了所提出的安全评估方法的有效性。