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首页> 外文期刊>EURASIP journal on advances in signal processing >Flexible riser monitoring using hybrid magnetic/optical strain gage techniques through RLS adaptive filtering
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Flexible riser monitoring using hybrid magnetic/optical strain gage techniques through RLS adaptive filtering

机译：通过RLS自适应滤波使用混合磁/光应变计技术进行灵活的立管监控

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Flexible riser is a class of flexible pipes which is used to connect subsea pipelines to floating offshore installations, such as FPSOs (floating production/storage/off-loading unit) and SS (semisubmersible) platforms, in oil and gas production. Flexible risers are multilayered pipes typically comprising an inner flexible metal carcass surrounded by polymer layers and spiral wound steel ligaments, also referred to as armor wires. Since these armor wires are made of steel, their magnetic properties are sensitive to the stress they are subjected to. By measuring their magnetic properties in a nonintrusive manner, it is possible to compare the stress in the armor wires, thus allowing the identification of damaged ones. However, one encounters several sources of noise when measuring electromagnetic properties contactlessly, such as movement between specimen and probe, and magnetic noise. This paper describes the development of a new technique for automatic monitoring of armor layers of flexible risers. The proposed approach aims to minimize these current uncertainties by combining electromagnetic measurements with optical strain gage data through a recursive least squares (RLSs) adaptive filter.
机译：挠性立管是一类挠性管，用于在石油和天然气生产中将海底管道连接到浮式海上设施，例如FPSO（浮式生产/存储/卸载单元）和SS（半潜式）平台。挠性立管是多层管，通常包括内部挠性金属胎体，该胎体被聚合物层和螺旋缠绕的钢带包围，也称为铠装线。由于这些铠装线由钢制成，因此它们的磁性对它们承受的应力很敏感。通过以非侵入方式测量其磁性能，可以比较铠装线中的应力，从而可以识别损坏的铠装线。但是，以非接触方式测量电磁性能时，会遇到多种噪声源，例如样品和探头之间的运动以及磁噪声。本文介绍了一种用于自动监控柔性立管铠装层的新技术的开发。所提出的方法旨在通过递归最小二乘（RLS）自适应滤波器将电磁测量值与光学应变仪数据结合起来，从而将这些电流不确定性降至最低。

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