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首页> 外文期刊>Journal of Spacecraft and Rockets >Application of System-Identification Techniques to Health Monitoring of On-Orbit Satellite Boom Structures
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Application of System-Identification Techniques to Health Monitoring of On-Orbit Satellite Boom Structures

机译：系统识别技术在轨卫星臂架结构健康监测中的应用

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摘要

The integration of composites into spacecraft is challenged by the risk of damage initiation and propagation during storage, launch, and service life. Elastically deployable composite booms are being developed for space utility. Matrix cracks are considered a primary form of damage caused by packaging before launch. However, while on orbit, most damages are induced by the environmental effects on the polymers. A well-developed structural health monitoring system will provide information for the dynamic control of the satellite and the condition of the deployable mechanisms on the space vehicle. A structural health monitoring methodology, based on the system-identification techniques, is proposed to identify the structural degradation in laminated composite booms. Nondestructive evaluation techniques, frequency-response analysis and autoregressive with exogenous input models are used to approximate the transfer functions between input and output sensing signals. Structural degradation is identified by examining the change of transfer functions at different storage states. A single-input/single-output approach is adopted in this paper. The proposed methodology is validated through experimentation in which matrix cracking is gradually induced by packaging the sample.
机译：复合材料在航天器中的集成受到在存储，发射和使用寿命期间损坏引发和传播的风险的挑战。正在开发可弹性展开的复合吊臂，以用于航天用途。基体裂纹被认为是发射前包装引起的主要损坏形式。但是，在轨道上运行时，大多数损坏是由对聚合物的环境影响引起的。一个完善的结构健康监测系统将为卫星的动态控制和航天器上可展开机构的状况提供信息。提出了一种基于系统识别技术的结构健康监测方法，以识别层状复合材料吊杆的结构退化。非破坏性评估技术，频率响应分析和具有外源输入模型的自回归被用于近似输入和输出感测信号之间的传递函数。通过检查不同存储状态下传递函数的变化来识别结构退化。本文采用单输入/单输出方法。通过实验验证了所提出的方法，其中通过包装样品逐渐引起基质开裂。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2011年第4期|p.589-598|共10页
  • 作者

    Yingtao Liu; Seung Bum Kim; Aditi Chattopadhyay; Derek Doyle;

  • 作者单位

    Arizona State University, Tempe, Arizona 85287;

    Arizona State University, Tempe, Arizona 85287;

    Arizona State University, Tempe, Arizona 85287;

    U.S. Air Force Research Laboratory, Kirtland Air Force Base, New Mexico 87117;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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