arXiv:2505.14252cs.LGcs.AI2025-05被引 1

用序列编码器让物理神经网络动态适应参数变化,实现实时过程监控。

Hybrid Adaptive Modeling in Process Monitoring: Leveraging Sequence Encoders and Physics-Informed Neural Networks

  • 用深度集合或序列编码器处理参数/边界/初值,输入物理神经网络
  • 在三个场景中验证:罗素系统抗噪、二维流场反演入口速度、真实热监测数据
  • 适合需要快速适应新工况的工业过程监控场景

本文提出一种融合序列编码器与物理信息神经网络(PINNs)的混合自适应建模方法,可在模型训练后实时应对可变参数、边界条件和初始条件。现有结合稀疏回归与PINNs的方法虽能进行动力系统辨识并求解,但对参数或条件变化敏感,需重新训练。本文通过深度集合或序列编码器对动态参数、边界条件和初始条件进行编码,并将编码特征作为PINN输入,使模型具备自适应能力。我们在三个问题上验证该方法:首先分析罗素常微分方程系统,展示其在噪声下仍具鲁棒性与泛化能力;其次研究二维纳维-斯托克斯方程问题,模拟圆柱绕流中参数化正弦入口速度,模型仅凭少数点压力数据即可反演出入口速度分布,并利用物理规律计算全域速度与压力;最后应用到玻璃纤维与热塑性复合材料板加热过程的真实数据监测任务,实现一维热过程的在线监控。实验表明该方法在多种复杂条件下均保持高效与准确。

原文摘要 · Abstract (English)

In this work, we explore the integration of Sequence Encoding for Online Parameter Identification with Physics-Informed Neural Networks to create a model that, once trained, can be utilized for real time applications with variable parameters, boundary conditions, and initial conditions. Recently, the combination of PINNs with Sparse Regression has emerged as a method for performing dynamical system identification through supervised learning and sparse regression optimization, while also solving the dynamics using PINNs. However, this approach can be limited by variations in parameters or boundary and initial conditions, requiring retraining of the model whenever changes occur. In this work, we introduce an architecture that employs Deep Sets or Sequence Encoders to encode dynamic parameters, boundary conditions, and initial conditions, using these encoded features as inputs for the PINN, enabling the model to adapt to changes in parameters, BCs, and ICs. We apply this approach to three different problems. First, we analyze the Rossler ODE system, demonstrating the robustness of the model with respect to noise and its ability to generalize. Next, we explore the model's capability in a 2D Navier-Stokes PDE problem involving flow past a cylinder with a parametric sinusoidal inlet velocity function, showing that the model can encode pressure data from a few points to identify the inlet velocity profile and utilize physics to compute velocity and pressure throughout the domain. Finally, we address a 1D heat monitoring problem using real data from the heating of glass fiber and thermoplastic composite plates.

物理信息网络过程监控序列编码自适应建模

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