| 海洋平台立管的传感器优化布置 |
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| 引用本文： | 孙小猛,冯新,周晶.海洋平台立管的传感器优化布置[J].辽宁工程技术大学学报(自然科学版),2010,29(6). |
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| 作者姓名： | 孙小猛 冯新 周晶 |
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| 作者单位： | 大连理工大学,海岸与近海工程国家重点实验室,辽宁,大连,116023 |
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| 基金项目： | 国家自然科学基金重点资助项目(50439010); 教育部科学技术重大基金资助项目(305003) |
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| 摘 要： | 为了满足海洋平台结构健康监测和损伤识别的要求,提出了一种以协调模态可观测性与损伤可识别性为目标的传感器优化布置方法。首先根据结构运动方程,利用损伤导致结构响应的变化,推导了结构响应与模态、损伤灵敏度的近似解析解。其次,建立包含模态信息和损伤灵敏度信息的传感器优化数学模型。最后利用奇异值分解方法,发展了一种以信息矩阵最大和条件数最小为目标的迭代算法。海洋平台立管的数值算例表明:该方法能够为海洋平台立管的健康监测提供可行的布点方案。
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| 关 键 词： | 传感器优化布置 海洋平台 立管 健康监测 |
Optimum sensor placement for riser at offshore platform |
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| SUN Xiaomeng,FENG Xin,ZHOU Jing.Optimum sensor placement for riser at offshore platform[J].Journal of Liaoning Technical University (Natural Science Edition),2010,29(6). |
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| Authors: | SUN Xiaomeng FENG Xin ZHOU Jing |
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| Institution: | SUN Xiaomeng,FENG Xin,ZHOU Jing(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China) |
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| Abstract: | To meet the requirement of structural health monitoring and damage detection on riser at offshore platform,a method for optimizing sensor locations based on the harmony between damage identifiability and modal observability is presented in this paper.Firstly,accounting for the structural response changes caused by structural damage,the relationship between the structural response with structural modal and damage sensitivity is deduced from the structural motion equation by a quasi-analytical mode.Secondly,a... |
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| Keywords: | optimum sensor placement offshore platform riser health monitoring |
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