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On experimental damage localization by SP2E: Application of H~∞ estimation and oblique projections

机译：SP2E在实验损伤定位中的应用：H〜∞估计和斜投影

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摘要

In this article experimental damage localization based on H~∞ estimation and state projection estimation error (SP2E) is studied. Based on an introduced difference process, a state space representation is derived for advantageous numerical solvability. Because real structural excitations are presumed to be unknown, a general input is applied therein, which allows synchronization and normalization. Furthermore, state projections are introduced to enhance damage identification. While first experiments to verify method SP2E have already been conducted and published, further laboratory results are analyzed here. Therefore, SP2E is used to experimentally localize stiffness degradations and mass alterations. Furthermore, the influence of projection techniques is analyzed. In summary, method SP2E is able to localize structural alterations, which has been observed by results of laboratory experiments.
机译：本文研究了基于H〜∞估计和状态投影估计误差（SP2E）的实验损伤定位。基于引入的差分过程，可以导出状态空间表示形式，以利于数值求解。因为假定实际的结构激励是未知的，所以在其中应用通用输入，这允许同步和规范化。此外，引入了状态预测以增强对损坏的识别。虽然已经进行并发表了验证方法SP2E的第一批实验，但此处仍将分析更多的实验室结果。因此，SP2E用于实验确定刚度退化和质量变化。此外，分析了投影技术的影响。总之，方法SP2E能够定位结构变化，这已通过实验室实验的结果得以观察到。

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