arXiv:2502.14571cs.LGcs.CE2025-02被引 1

用神经网络构建数字孪生,预测压滤机滤布性能与运行参数。

Predicting Filter Medium Performances in Chamber Filter Presses with Digital Twins Using Neural Network Technologies

  • 基于循环神经网络建立滤布性能预测模型,支持实时更新。
  • 压力预测误差仅5%,流量预测误差9.3%,未知数据下也保持稳定。
  • 适合矿业等重工业的智能运维,可减少停机与资源浪费。

高效固液分离在采矿等行业至关重要,但传统压滤机依赖人工监控,导致效率低、停机频繁和资源浪费。本文提出一种基于机器学习的数字孪生框架,提升操作灵活性与预测控制能力。针对滤布因反复使用和堵塞而劣化的关键问题,构建了神经网络预测模型,可预估压力、流量等运行参数。该模型优化过滤周期,降低停机时间,提升效率,并预测滤布寿命,助力维护规划与资源可持续性。数字孪生实现传感器数据与模型间的无缝交互,持续更新训练数据,提升精度。对比前馈与循环神经网络,循环模型表现更优,部分已知数据下压力与流量预测的相对$L^2$-范数误差分别为5%和9.3%;完全未知数据下分别为18.4%和15.4%。定性分析显示预测值与实测值高度一致,压力偏差在8.2%置信带内,流量在4.8%内。本工作贡献了高精度预测模型、滤布周期影响新预测方法及实时模型更新接口,具备适应动态工况的能力。

原文摘要 · Abstract (English)

Efficient solid-liquid separation is crucial in industries like mining, but traditional chamber filter presses depend heavily on manual monitoring, leading to inefficiencies, downtime, and resource wastage. This paper introduces a machine learning-powered digital twin framework to improve operational flexibility and predictive control. A key challenge addressed is the degradation of the filter medium due to repeated cycles and clogging, which reduces filtration efficiency. To solve this, a neural network-based predictive model was developed to forecast operational parameters, such as pressure and flow rates, under various conditions. This predictive capability allows for optimized filtration cycles, reduced downtime, and improved process efficiency. Additionally, the model predicts the filter mediums lifespan, aiding in maintenance planning and resource sustainability. The digital twin framework enables seamless data exchange between filter press sensors and the predictive model, ensuring continuous updates to the training data and enhancing accuracy over time. Two neural network architectures, feedforward and recurrent, were evaluated. The recurrent neural network outperformed the feedforward model, demonstrating superior generalization. It achieved a relative $L^2$-norm error of $5\%$ for pressure and $9.3\%$ for flow rate prediction on partially known data. For completely unknown data, the relative errors were $18.4\%$ and $15.4\%$, respectively. Qualitative analysis showed strong alignment between predicted and measured data, with deviations within a confidence band of $8.2\%$ for pressure and $4.8\%$ for flow rate predictions. This work contributes an accurate predictive model, a new approach to predicting filter medium cycle impacts, and a real-time interface for model updates, ensuring adaptability to changing operational conditions.

数字孪生神经网络压滤机预测维护

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