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Optimal sensors placement and spillover suppression

机译:最佳的传感器放置和溢出抑制

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A new approach to optimal placement of sensors (OSP) in mechanical structures is presented, fn contrast to existing methods, the presented procedure enables a designer to seek for a trade-off between the presence of desirable modes in captured measurements and the elimination of influence of those mode shapes that are not of interest in a given situation. An efficient numerical algorithm is presented, developed from an existing routine based on the Fischer information matrix analysis. We consider two requirements in the optimal sensor placement procedure. On top of the classical EFI approach, the sensors configuration should also minimize spillover of unwanted higher modes. We use the information approach to OSP, based on the effective independent method (EFI), and modify the underlying criterion to meet both of our requirements—to maximize useful signals and minimize spillover of unwanted modes at the same time. Performance of our approach is demonstrated by means of examples, and a flexible Blended Wing Body (BWB) aircraft case study related to a running European-level FP7 research project 'ACFA 2020—Active Control for Flexible Aircraft'.
机译:提出了一种在机械结构中最佳放置传感器(OSP)的新方法,与现有方法形成对比,该程序使设计人员能够在捕获的测量中期望模式的存在与影响的消除之间寻求权衡。在给定情况下不感兴趣的那些模式形状中的一个。提出了一种有效的数值算法,该算法是基于菲舍尔信息矩阵分析的现有例程开发的。我们在最佳传感器放置过程中考虑了两个要求。在经典EFI方法的基础上,传感器配置还应最大程度地减少不必要的较高模式的溢出。我们使用基于有效独立方法(EFI)的OSP信息方法,并修改基本标准以满足我们的两个要求-最大化有用信号,同时最小化有害模式的溢出。我们的方法的效果通过示例以及与正在运行的欧洲级FP7研究项目“ ACFA 2020-柔性飞机的主动控制”相关的柔性混合翼飞机(BWB)飞机案例研究进行了演示。

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