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arXiv 1010.2695math.AP
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结构声干扰的反问题

Inverse Problem for a Structural Acoustic Interaction

Shitao Liu

摘要:

在这项工作中,我们考虑了一个反问题,确定源项的结构声学偏微分方程(PDE)模型,包括一个二维或三维的内部声波方程耦合到基尔霍夫板方程,与耦合完成跨越边界界面。对于这个偏微分方程系统,我们从“结构”边值的一次测量得到了源项的唯一性和稳定性估计。唯一性的证明是基于Carleman估计。然后,通过一个可观测性不等式和一个紧性/唯一性论证,我们可以得到稳定性结果。最后,算子理论的方法给我们的正则性所需的初始条件,以获得所需的稳定性估计。

英文摘要:

In this work, we consider an inverse problem of determining a source term for a structural acoustic partial differentia equation (PDE) model, comprised of a two or three-dimensional interior acoustic wave equation coupled to a Kirchoff plate equation, with the coupling being accomplished across a boundary interface. For this PDE system, we obtain the uniqueness and stability estimate for the source term from a single measurement of boundary values of the "structure". The proof of uniqueness is based on Carleman estimate. Then, by means of an observability inequality and a compactness/uniqueness argument, we can get the stability result. Finally, an operator theoretic approach gives us the regularity needed for the initial conditions in order to get the desired stability estimate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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