基于cots的航天器鲁棒故障保护策略

B. Jackson
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引用次数: 9

摘要

提出了一种广泛使用COTS元件的低成本单串航天器的鲁棒故障保护策略。这些组件包括商业处理器和微控制器,这些传统上被认为不适合在太空中使用。通过精心设计一个采用多个分布式处理器的航空电子架构,并将其与适当的故障保护策略相结合,即使是单串基于cots的航天器也可以变得相当健壮。故障保护策略旨在尽可能在最高级别捕获故障,同时保留最大数量的航天器功能,并且可以在没有地面干预的情况下自主隔离和纠正小故障。对于更严重的故障,飞行器总是被放置在一个安全的配置,直到地面能够诊断出异常并恢复航天器。本文将展示如何使用多层故障保护策略来减轻从未打算在空间环境中使用的飞行COTS组件的风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Robust Fault Protection Strategy for a COTS-Based Spacecraft
This paper presents a robust fault protection strategy for a low-cost single-string spacecraft that makes extensive use of COTS components. These components include commercial processors and microcontrollers that would traditionally be considered inappropriate for use in space. By crafting an avionics architecture that employs multiple distributed processors, and coupling this with an appropriate fault protection strategy, even a single-string COTS-based spacecraft can be made reasonably robust. The fault protection strategy is designed to trap faults at the highest possible level while preserving the maximum amount of spacecraft functionality, and can autonomously isolate and correct minor faults without ground intervention. For more serious faults, the vehicle is always placed in a safe configuration until the ground can diagnose the anomaly and recover the spacecraft. This paper will show how a multi-tiered fault protection strategy can be used to mitigate the risk of flying COTS components that were never intended for use in the space environment.
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