This article addresses the issues of model reduction and actuator/sensor placement for flexible spacecraft with plant, actuator, and sensor faults. First, the sensitivity of controllability and observability with respect to faults is analyzed; Second, instead of a complete redesign of balanced truncation, a fault tolerant truncation method is proposed by estimating the bounds of Hankel singular value of faulty spacecraft and is fully based on the original balanced truncation structure; Third, a reconfiguration scheme of actuator/sensor placement is developed based on the reduced-order faulty flexible spacecraft.

中文翻译：

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挠性航天器的容错模型精简和执行器/传感器的放置

本文解决了具有工厂，执行器和传感器故障的挠性航天器的模型简化和执行器/传感器放置的问题。首先，分析了关于故障的可控性和可观察性的敏感性；其次，不是完全重新设计平衡截断，而是通过估计故障航天器的汉克尔奇异值的边界提出了一种容错截断方法，该方法完全基于原始的平衡截断结构。第三，基于降阶有故障的挠性航天器，开发了一种执行器/传感器放置的重新配置方案。