A non-contact transport method using near-field acoustic levitation has been studied. In this research, the levitated object is transported by multiple stators in steps. This transport method requires a large number of stators, but it has the advantage of precisef positioning because the levitated object is stopped and held on each stator. In addition, by arranging stators in two dimensions, transportation in two-dimensional direction is realized, but stable operation is not obtained, such as unintended rotation in transportation. Through experiments and analysis, we clarified under what conditions the transported object rotates.

中文翻译：

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近场声悬浮保持力多自由度非接触运输的研制及考虑不稳定运行因素

已经研究了使用近场声悬浮的非接触传输方法。在这项研究中，悬浮物体由多个定子分步运输。这种运输方式需要大量的定子，但它具有定位精确的优点，因为悬浮物体被停止并保持在每个定子上。另外，通过将定子进行二维排列，实现了二维方向的输送，但无法得到稳定的运行，例如输送中的无意识旋转。通过实验和分析，我们明确了被输送物体在什么条件下旋转。