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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Design of a tolerant flight control system in response to multiple actuator control signal faults induced by cosmic rays
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Design of a tolerant flight control system in response to multiple actuator control signal faults induced by cosmic rays

机译：响应宇宙射线引起的多个执行器控制信号故障的容错飞行控制系统设计

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摘要

Due to continued miniaturization, semiconductor-based components used in high-performance digital microelectronics are becoming increasingly sensitive to cosmic rays and solar particle events. In the context of high-altitude flight control systems based on fly-by-wire techniques, this may produce sensor noise or affect actuator control signals. Although the consequences so far have been simply reductions in aircraft performance, catastrophic scenarios may be envisioned. In this article, we propose a novel architecture for a fault-tolerant flight control system able to detect and compensate for cosmic ray-induced multiple-bit upsets that affect actuator control signals in modern fly-by-wire avionics systems while assuming that the actuator itself remains healthy. A fault detection and diagnosis procedure was designed using a geometric approach combined with an extended multiple-model adaptive estimation technique. This procedure is able to process multiple faulty actuator-control signals and identify their parameters. The parameters thus obtained are then used with a reconfigurable sliding-mode control to compensate for such errors by mobilizing the remaining actuators??? healthy control signals. Lyapunov stability theory is used to analyze the closed-loop system stability. Simulation results using Matlab /Simulink showed the effectiveness of the proposed approach in the case of a system challenged with double faults.
机译：由于持续的小型化，高性能数字微电子学中使用的基于半导体的组件对宇宙射线和太阳粒子事件变得越来越敏感。在基于线控飞行技术的高空飞行控制系统中，这可能会产生传感器噪声或影响执行器控制信号。尽管到目前为止的后果仅仅是降低飞机性能，但可以预见灾难性的情况。在本文中，我们提出了一种用于容错飞行控制系统的新颖体系结构，该系统能够检测和补偿宇宙射线引起的多位扰动，这些扰动会影响现代电传航空电子系统中的执行器控制信号，同时假定执行器本身保持健康。使用几何方法结合扩展的多模型自适应估计技术来设计故障检测和诊断程序。此过程能够处理多个错误的执行器控制信号并确定其参数。这样获得的参数然后与可重新配置的滑模控制一起使用，以通过动员其余的致动器来补偿这种误差。健康的控制信号。李雅普诺夫稳定性理论用于分析闭环系统的稳定性。使用Matlab / Simulink进行的仿真结果表明，在系统出现双重故障的情况下，该方法是有效的。

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