arXiv:2504.06818eess.SYcs.LG2025-04被引 14

用深度神经网络构建船舶碳捕集动态模型,实现节能高效控制。

Deep Neural Koopman Operator-based Economic Model Predictive Control of Shipboard Carbon Capture System

  • 基于深层神经网络的Koopman算子建模,捕捉系统动态特性。
  • 在四种工况下碳捕集率提升,经济成本显著降低。
  • 适合船舶碳捕集系统实时控制,兼顾安全与效率。

船舶碳捕集是减少国际航运碳排放的有前景方案。本文提出一种基于Koopman框架的数据驱动动态建模与经济预测控制方法,旨在实现船舶后燃碳捕集装置的安全、节能运行。具体而言,提出一种深度神经Koopman算子建模方法,构建具有时变参数的Koopman模型,可基于可获取的部分状态测量值预测整体经济运行成本与关键系统输出。基于该学习模型,设计了约束型经济预测控制方案。尽管模型包含时变参数,但对应的优化问题仍为凸问题,可在在线控制中高效求解。在高保真船舶后燃碳捕集仿真环境中开展大量测试,涵盖四种船舶运行工况。结果表明,所提方法显著提升了整体经济运行性能与碳捕集率,同时通过确保系统输出硬约束满足,保障了安全运行。

原文摘要 · Abstract (English)

Shipboard carbon capture is a promising solution to help reduce carbon emissions in international shipping. In this work, we propose a data-driven dynamic modeling and economic predictive control approach within the Koopman framework. This integrated modeling and control approach is used to achieve safe and energy-efficient process operation of shipboard post-combustion carbon capture plants. Specifically, we propose a deep neural Koopman operator modeling approach, based on which a Koopman model with time-varying model parameters is established. This Koopman model predicts the overall economic operational cost and key system outputs, based on accessible partial state measurements. By leveraging this learned model, a constrained economic predictive control scheme is developed. Despite time-varying parameters involved in the formulated model, the formulated optimization problem associated with the economic predictive control design is convex, and it can be solved efficiently during online control implementations. Extensive tests are conducted on a high-fidelity simulation environment for shipboard post-combustion carbon capture processes. Four ship operational conditions are taken into account. The results show that the proposed method significantly improves the overall economic operational performance and carbon capture rate. Additionally, the proposed method guarantees safe operation by ensuring that hard constraints on the system outputs are satisfied.

碳捕集预测控制Koopman算子船舶减排

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