Kim Yeoun-Jae, Wi Daehan
Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Sci Rep. 2024 Dec 30;14(1):32107. doi: 10.1038/s41598-024-83849-8.
The authors previously developed an online thin film buckling configuration determination method for a mini basket type mapping catheter prototype, which incorporates eight thin film sensor strips. In the prior study, no external force was applied to the thin film, and only axial displacement was adjusted to induce buckling in the thin film. Extending this prior work, a preliminary methodological validation is conducted for an online configuration determination method of thin film buckling under a point contact force. The overall thin film configuration determination problem is formulated as a constrained optimization problem, involving five variables and five equality constraint functions. Before developing an actual online optimization solver, preliminary numerical calculations, Ansys simulations, and experiments are performed to verify the proposed problem formulation. The comparison between the numerical precalculations, Ansys simulations, and experimental results demonstrated that the proposed problem formulation is consistent with Ansys simulations and experimental outcomes. This indicates that the proposed formulation is capable of calculating accurate solutions using appropriate optimization methodologies.
作者之前为一种包含八个薄膜传感器条带的微型篮式标测导管原型开发了一种在线薄膜屈曲构型确定方法。在之前的研究中，未对薄膜施加外力，仅通过调整轴向位移来诱导薄膜屈曲。在这项前期工作的基础上，针对点接触力作用下薄膜屈曲的在线构型确定方法进行了初步的方法学验证。整个薄膜构型确定问题被表述为一个约束优化问题，涉及五个变量和五个等式约束函数。在开发实际的在线优化求解器之前，先进行了初步数值计算、Ansys模拟和实验，以验证所提出的问题表述。数值预计算、Ansys模拟和实验结果之间的比较表明，所提出的问题表述与Ansys模拟和实验结果一致。这表明所提出的表述能够使用适当的优化方法计算出准确的解。
