arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.06588eess.SYcs.SY
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概率飞行包线估计及其在不稳定过驱动飞机中的应用

Probabilistic Flight Envelope Estimation with Application to Unstable Overactuated Aircraft

Mingzhou Yin, Q. P. Chu, Y. Zhang, Michael A. Niestroy, C. C. de Visser

摘要:

本文提出了一种新的和实用的框架,安全飞行包线估计和保护,以防止失控相关的事故。传统的解析包络估计方法不能有效地用于具有高维和复杂动态的系统,这通常是高保真飞机模型的情况。为此,本文提出了一种基于蒙特卡罗模拟的概率包络估计方法。该方法通过模拟具有极端控制效果的飞行轨迹来生成飞行包线的概率估计。结果表明,该方法可以显着减少计算量相比,以前的优化方法,并保证可行的和保守的包络估计不少于7维。该方法被应用到创新的控制效应器飞机,一个过驱动无尾战斗机与复杂的气动耦合控制效应器之间。估计的概率飞行包线用于在线包线保护的数据库方法。传统的基于状态约束的飞行包线保护系统和新型的预测概率飞行包线保护系统均采用多回路非线性动态逆控制器实现。实时仿真结果表明,所提出的框架可以保护飞机在估计的包线内,并节省飞机的机动,否则将导致失控。

英文摘要:

This paper proposes a novel and practical framework for safe flight envelope estimation and protection, in order to prevent loss-of-control-related accidents. Conventional analytical envelope estimation methods fail to function efficiently for systems with high dimensionality and complex dynamics, which is often the case for high-fidelity aircraft models. In this way, this paper develops a probabilistic envelope estimation method based on Monte Carlo simulation. This method generates a probabilistic estimation of the flight envelope by simulating flight trajectories with extreme control effectiveness. It is shown that this method can significantly reduce the computational load compared with previous optimization-based methods and guarantee feasible and conservative envelope estimation of no less than seven dimensions. This method was applied to the Innovative Control Effectors aircraft, an overactuated tailless fighter aircraft with complex aerodynamic coupling between control effectors. The estimated probabilistic flight envelope is used for online envelope protection by a database approach. Both conventional state-constraint-based and novel predictive probabilistic flight envelope protection systems were implemented on a multiloop nonlinear dynamic inversion controller. Real-time simulation results demonstrate that the proposed framework can protect the aircraft within the estimated envelope and save the aircraft from maneuvers that otherwise would result in loss of control.

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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