arXiv:2508.13097cs.CEcs.LG2025-08

用扩散模型逆向设计可编程气动结构,一键生成满足变形需求的初始形状。

Denoising diffusion models for inverse design of inflatable structures with programmable deformations

  • 基于扩散模型将目标变形态作为条件,生成对应的未变形结构图像。
  • 支持标量与高维描述符,快速产出多样可行的设计方案。
  • 适合软体机器人、可展航天结构等需要大变形设计的领域。

可编程结构是指通过精心设计其未变形几何形态和材料分布,使其在特定载荷下实现预定的变形状态。气动结构是典型例子,利用内部加压实现大尺度、非线性变形,广泛应用于软体机器人、可展开航天系统、生物医学设备和自适应建筑等领域。本文提出一种基于去噪扩散概率模型(DDPM)的生成式设计框架,用于实现压力驱动下发生大变形弹性结构的逆向设计。该方法将逆向设计建模为条件生成任务,以目标变形状态的几何描述符为输入,输出未变形构型的图像表示。通过固定图像处理、仿真设置和描述符提取流程,将构型表示为简单图像。数值实验表明,该框架能快速生成多样化的未变形构型,在充气后实现预期变形,支持并行探索可行设计候选,同时满足复杂约束条件。

原文摘要 · Abstract (English)

Programmable structures are systems whose undeformed geometries and material property distributions are deliberately designed to achieve prescribed deformed configurations under specific loading conditions. Inflatable structures are a prominent example, using internal pressurization to realize large, nonlinear deformations in applications ranging from soft robotics and deployable aerospace systems to biomedical devices and adaptive architecture. We present a generative design framework based on denoising diffusion probabilistic models (DDPMs) for the inverse design of elastic structures undergoing large, nonlinear deformations under pressure-driven actuation. The method formulates the inverse design as a conditional generation task, using geometric descriptors of target deformed states as inputs and outputting image-based representations of the undeformed configuration. Representing these configurations as simple images is achieved by establishing a pre- and postprocessing pipeline that involves a fixed image processing, simulation setup, and descriptor extraction methods. Numerical experiments with scalar and higher-dimensional descriptors show that the framework can quickly produce diverse undeformed configurations that achieve the desired deformations when inflated, enabling parallel exploration of viable design candidates while accommodating complex constraints.

逆向设计扩散模型气动结构软体机器人

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