G-PROSNet: Gradient-guided pressure-field reconstruction with optimal sensor placement for high-speed trains

Li Tong; Zou Junhong; Sun Zhenxu; Lei Zhen; Zhu Xiangyu

doi:10.7638/kqdlxxb-2025.0255

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G-PROSNet: Gradient-guided pressure-field reconstruction with optimal sensor placement for high-speed trains

更新时间：2026-10-14

- G-PROSNet: Gradient-guided pressure-field reconstruction with optimal sensor placement for high-speed trains
- Vol. 44, Issue 8, Pages: 20-28(2026)
- 作者机构：
  
  1. 中国科学院自动化研究所,北京,100190
  2. 中国科学院大学前沿交叉科学学院,北京,101408
  3. 中国科学院力学研究所,北京,100190
  4. 中国科学院大学人工智能学院,北京,101408
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2025.0255
  CLC： U270.1;TP183
- Published：2026
- 稿件说明：
移动端阅览
李桐, 邹俊泓, 孙振旭, 等. 梯度引导的高速列车表面传感器布局优化和稀疏压力场重建策略[J]. 空气动力学学报, 2026, 44(8): 20−28.

Li Tong, Zou Junhong, Sun Zhenxu, et al. G-PROSNet: Gradient-guided pressure-field reconstruction with optimal sensor placement for high-speed trains[J]. 2026, 44(8): 20-28.
李桐, 邹俊泓, 孙振旭, 等. 梯度引导的高速列车表面传感器布局优化和稀疏压力场重建策略[J]. 空气动力学学报, 2026, 44(8): 20−28. DOI： 10.7638/kqdlxxb-2025.0255

Li Tong, Zou Junhong, Sun Zhenxu, et al. G-PROSNet: Gradient-guided pressure-field reconstruction with optimal sensor placement for high-speed trains[J]. 2026, 44(8): 20-28. DOI： 10.7638/kqdlxxb-2025.0255.

摘要

准确获取高速列车表面压力场的精确分布，是开展空气动力学外形优化设计的重要数据基础。但受限于车体结构的物理限制，在实际测试中仅能通过布置少量的传感器来获取稀疏压力数据。为此，本文提出一种名为G-PROSNet的梯度引导的传感器布局优化与稀疏压力场重建方法。该方法在深度学习框架中引入基于点云邻域的Laplacian正则化，以强化压力场的空间平滑性与物理一致性。此外，通过两阶段训练策略实现数据驱动与物理约束的协同优化：第一阶段进行预训练，学习压力场稀疏至稠密的映射规律；第二阶段结合可微节点选择模块与梯度约束，实现传感器布局与重建性能的联合提升。在CRH380A高速列车压力数据集上，该方法在RMSE与L2RE指标上分别达到1.18×10

–4

和0.73×10

–3

，较基线模型PROSNet分别降低约4.8%和3.9%。结果表明，该方法在复杂工况下仍能保持高精度与物理合理性，为建立高速列车气动测试与稠密压力场获取之间的桥梁提供了有效方案。

Abstract

Accurate knowledge of the surface pressure distribution is essential for the aerodynamic design and optimization of high-speed trains. However

due to the physical constraints imposed by the train structure

only sparse pressure measurements can be obtained in practical tests. To address this limitation

this study proposes a gradient-guided framework for sensor layout optimization and sparse pressure-field reconstruction. The method integrates a Laplacian regularization based on point-cloud neighborhoods within a deep learning model

to enhance spatial smoothness and physical consistency of the reconstructed pressure field. A two-stage training strategy is employed to achieve collaborative optimization of data-driven learning and physical constraints. In the first stage

the network is pretrained to learn the mapping from sparse sensor measurements to dense pressure fields. In the second stage

a differentiable node-selection module is combined with gradient-based constraints to jointly optimize the sensor configuration and reconstruction performance. Experiments conducted on the CRH380A high-speed train dataset demonstrate that the proposed approach achieves RMSE and L2RE values of 1.18×10

–4

and 0.73×10

–3

representing improvements of approximately 4.8% and 3.9% over the PROSNet baseline. The results indicate that the method maintains high reconstruction accuracy and physical fidelity under complex operating conditions

effectively bridging the gap between sparse aerodynamic testing and dense pressure-field acquisition

and providing a reliable tool for aerodynamic analysis and sensor deployment planning.

关键词

Keywords

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