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Federated split learning-driven multimodal physical-virtual integration framework: high-fidelity full-cross-section deformation field reconstruction in precise metal tube bending manufacturing 联邦分裂学习驱动的多模态物理-虚拟集成框架:高精度金属管材弯曲制造中的高保真全截面变形场重建
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-12-25 DOI: 10.1016/j.jii.2025.101048
Zili Wang , Xinlei Hu , Shuyou Zhang , Lemiao Qiu , Yaochen Lin , Liangyou Li , Yongzhe Xiang , Jie Li
During the metal tube bending (MTB) process, high-fidelity reconstruction of full cross-section (FCS) deformation is critical to the robustness of closed-loop control in tube-bending manufacturing systems. However, the distributed nature of industrial data, the spatiotemporal discontinuity of physical sensing, and the heterogeneity of multimodal physical–virtual data hinder effective integration of distributed sources and precise reconstruction of the transient deformation of tube surfaces. To address these challenges, we propose a Federated Split-Learning–Driven Multimodal Physical–Virtual Integration (FSLD-MPVI) framework. Leveraging a hybrid distributed–centralized architecture with cross-level collaborative fusion, FSLD-MPVI enables efficient integration and knowledge sharing of local high-fidelity visual data, global low-fidelity finite-element (FE) simulation data, and static process parameters that are dispersed across manufacturing nodes. Within the split learning (SL) distributed architecture, three cascaded, heterogeneous subnetworks are deployed, each dedicated to fusing a specific class of hybrid modality inputs, thereby providing the infrastructure needed to integrate modalities originating from different workshops. In the federated learning (FL) layer, a centralized server aggregates the parameters of each subnetwork respectively, mitigating cross-node data isolation while preserving data locality. Experiments demonstrate that FSLD-MPVI achieves high-accuracy global reconstruction (R² = 0.9973); in the 90° bending case, the shape deviation remains within 0.2 mm. These results verify that multimodal physical–virtual integration strongly supports precise global reconstruction of FCS deformation fields and establishes a new paradigm for intelligent process monitoring in advanced manufacturing systems.
在金属管材弯曲加工过程中,全截面变形的高保真重建对管材弯曲制造系统闭环控制的鲁棒性至关重要。然而,工业数据的分布式特性、物理感知的时空不连续以及多模态物理-虚拟数据的异质性阻碍了分布式数据源的有效集成和管道表面瞬态变形的精确重建。为了应对这些挑战,我们提出了一个联邦分裂学习驱动的多模态物理虚拟集成(FSLD-MPVI)框架。FSLD-MPVI利用混合分布式集中式架构和跨层协作融合,实现了本地高保真视觉数据、全球低保真有限元(FE)仿真数据和分散在制造节点上的静态过程参数的高效集成和知识共享。在分离学习(SL)分布式体系结构中,部署了三个级联的异构子网,每个子网专门用于融合特定类别的混合模态输入,从而提供集成来自不同车间的模态所需的基础设施。在联邦学习(FL)层,集中式服务器分别聚合每个子网的参数,在保持数据局部性的同时减轻了跨节点数据隔离。实验表明,FSLD-MPVI实现了高精度的全局重建(R²= 0.9973);在90°弯曲情况下,形状偏差保持在0.2 mm以内。这些结果验证了多模态物理-虚拟集成强有力地支持了FCS变形场的精确全局重建,并为先进制造系统中的智能过程监控建立了新的范例。
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引用次数: 0
Mixed objective scheduling optimization in mountain orchards under energy-saving for carbon neutrality 碳中和节能条件下山地果园混合目标调度优化
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-12-25 DOI: 10.1016/j.jii.2025.101049
Zhentao Xue , Zhigang Ren , Jian Chen , Xiqing Wang , Shuaisong Zhang
The air-ground cooperative plant protection unmanned formation can effectively deal with the complex terrain challenges of mountain orchards and ensure the uniformity of plant protection operation coverage. The core of this system lies in the principles of Industrial Information Integration Engineering (IIIE). Through dynamic scheduling optimization, it can alleviate the problems of large energy consumption and long non-operation paths. Aiming at the dynamic scheduling planning problem, this study proposes an energy-saving hybrid target scheduling optimization method based on an improved Australian wild dog hunting strategy. A novel mountain orchard path coding technology is designed, and an energy consumption model based on the principle of unmanned formation dynamics is established, which provides a scientific basis for formulating efficient energy-saving strategies. The improved Australian wild dog hunting strategy combines the motion constraints of unmanned formation and the requirements of plant protection tasks, and realizes the efficient optimization of the scheduling scheme. Numerical experiments demonstrated the effectiveness of the proposed method, which reduced the objective function to 65.63% of the initial solution in simulations, outperforming the genetic algorithm. This performance was further validated in a real-world scenario, where the value was reduced to 57.34%. This efficient dynamic scheduling optimization serves as a key enabler for agricultural industry integration and informatization.
地空协同植保无人编队可以有效应对山地果园复杂的地形挑战,保证植保作业覆盖的均匀性。该系统的核心是工业信息集成工程(IIIE)的原理。通过动态调度优化,可以缓解能耗大、非运行路径长等问题。针对动态调度规划问题,提出了一种基于改进的澳大利亚野狗狩猎策略的节能混合目标调度优化方法。设计了一种新颖的山地果园路径编码技术,建立了基于无人编队动力学原理的果园路径能耗模型,为制定高效节能策略提供了科学依据。改进的澳大利亚野狗狩猎策略结合了无人编队的运动约束和植保任务的要求,实现了调度方案的高效优化。数值实验证明了该方法的有效性,在模拟中将目标函数降低到初始解的65.63%,优于遗传算法。在实际场景中进一步验证了这一性能,该值降至57.34%。这种高效的动态调度优化是农业产业一体化和信息化的关键推动因素。
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引用次数: 0
Automating appliance verification in facilities management using a denoised Voltage-Current feature extraction and classification pipeline 使用去噪电压-电流特征提取和分类管道在设施管理中自动化设备验证
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-12-16 DOI: 10.1016/j.jii.2025.101040
Socretquuliqaa Lee , Faiyaz Doctor , Mohammad Hossein Anisi , Shashank Goud , Xiao Wang
Facilities Management (FM) companies can use load monitoring of electrical appliances (assets) to track energy consumption and predictive maintenance. Reliable algorithms are needed to automatically identify or verify appliances through their energy signatures to improve efficiencies during installation and inspection tasks. Most approaches rely on Voltage-Current (V-I) trajectory. These features are extracted from steady-state current and voltage signals. However, these methods often assume signals are uniformly sampled. In real-world conditions, this assumption does not always hold, leading to misclassified steady-state events when signals are noisy. This paper introduces a novel feature extraction and classification pipeline to ensure the validity of detected steady-state events. The approach measures the approximate entropy of current signals and their correlation with voltage to extract denoised features for appliance type classification. The proposed pipeline is evaluated on a large-scale real-world operational dataset spanning multiple appliance categories. We demonstrate that the extracted denoised features significantly improve the performance of Machine Learning (ML) models used for appliance type classification. Finally, we present a deployment framework for FM settings, enabling digital cataloguing of appliances informing businesses on sustainable choices for appliance requirements.
设施管理(FM)公司可以使用电器(资产)的负载监控来跟踪能源消耗和预测性维护。需要可靠的算法来通过其能量特征自动识别或验证设备,以提高安装和检查任务期间的效率。大多数方法依赖于电压-电流(V-I)轨迹。这些特征是从稳态电流和电压信号中提取出来的。然而,这些方法通常假设信号是均匀采样的。在现实世界中,这个假设并不总是成立,当信号有噪声时,会导致对稳态事件的错误分类。为了保证检测到的稳态事件的有效性,本文引入了一种新的特征提取和分类管道。该方法测量电流信号的近似熵及其与电压的相关性,提取去噪特征,用于器具类型分类。建议的管道在跨越多个设备类别的大规模实际操作数据集上进行评估。我们证明了提取的去噪特征显著提高了用于家电类型分类的机器学习(ML)模型的性能。最后,我们提出了FM设置的部署框架,实现了设备的数字编目,为企业提供了设备需求的可持续选择。
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引用次数: 0
Implementing TinyML in Internet of Things devices: A systematic literature review 在物联网设备中实现TinyML:系统的文献综述
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2026-01-09 DOI: 10.1016/j.jii.2026.101065
Andrés Felipe Solis Pino , Daniel Steven Moran Pizarro , Pablo H. Ruiz , Vanessa Agredo-Delgado , Cesar Alberto Collazos , Fernando Moreira
The Internet of Things is at the heart of society and is experiencing rapid expansion. Its integration with Artificial Intelligence and Machine Learning has led to the emergence of Tiny Machine Learning (TinyML), which enables data processing directly on the device, improving efficiency, reducing latency, and increasing data privacy. Despite the growing relevance of TinyML in the Internet of Things, there is a lack of systematic literature reviews providing a holistic understanding of its implementation, advances, and challenges, which hinders a clear understanding of the available empirical evidence and best practices. To bridge this gap, this study presents a systematic literature review, adhering to the PRISMA protocol and employing a multi-database search strategy, identifying 114 primary studies. The review reveals that TinyML is consolidating as a transformative paradigm for the Internet of Things, experiencing significant research growth since 2020. Applications are diverse, with healthcare and environmental monitoring being the most notable examples. Deep learning models, particularly convolutional neural networks, are frequently employed in this context. The main challenges identified include security vulnerabilities, the need to address ethical considerations like algorithmic bias, and hardware limitations related to memory and processing power. Ultimately, this review offers valuable insights into the current state and prospects of TinyML in the Internet of Things, providing a valuable resource for researchers, developers, and decision-makers in this rapidly evolving field.
物联网是社会的核心,正在迅速发展。它与人工智能和机器学习的结合导致了微型机器学习(TinyML)的出现,它可以直接在设备上处理数据,提高效率,减少延迟,并增加数据隐私。尽管TinyML在物联网中的相关性越来越大,但缺乏系统的文献综述,无法全面了解其实现、进展和挑战,这阻碍了对现有经验证据和最佳实践的清晰理解。为了弥补这一差距,本研究提出了一项系统的文献综述,遵循PRISMA协议并采用多数据库搜索策略,确定了114项主要研究。回顾显示,TinyML正在巩固其作为物联网变革范例的地位,自2020年以来,其研究成果显著增长。应用程序多种多样,医疗保健和环境监测是最显著的例子。深度学习模型,特别是卷积神经网络,在这种情况下经常被使用。确定的主要挑战包括安全漏洞,需要解决算法偏见等道德问题,以及与内存和处理能力相关的硬件限制。最后,本综述对TinyML在物联网领域的现状和前景提供了有价值的见解,为这个快速发展的领域的研究人员、开发人员和决策者提供了宝贵的资源。
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引用次数: 0
A review on machine learning and deep learning techniques for plant leaf disease detection and classification with IoT in agriculture industry 机器学习和深度学习技术在农业物联网植物叶片病害检测与分类中的应用综述
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2026-01-22 DOI: 10.1016/j.jii.2026.101078
Priyadharshini Arputharaj, Kalaivanan Karunanithy
Agriculture serves as a major source of food and plays a key function as the backbone of most countries’ economies. However, farmers are encountering many challenges in this sector, such as drought, flooding, diseases, nutrient deficiency, and so on. The technological advancements in the field of agriculture, also called smart agriculture, are necessary to address the requirements of the expanding population and manage the associated challenges. Among those, plant leaf diseases are the primary concern that severely impacts crop yield and economic stability. This technical review examines various Machine Learning (ML) and Deep Learning (DL) approaches used to identify and classify different plant leaf diseases. This review gives an overview of the current state-of-the-art ML, DL, and IoT-enabled disease prediction systems and their recent advances in developing an intelligent system in smart agriculture. It provides insights into the various technological developments and discusses the benefits and opportunities of AI-based models in plant disease management.
农业是粮食的主要来源,是大多数国家经济的支柱,发挥着关键作用。然而,农民在这一领域面临着许多挑战,如干旱、洪水、疾病、营养缺乏等。农业领域的技术进步,也被称为智能农业,是解决不断增长的人口需求和管理相关挑战所必需的。其中,植物叶片病害是严重影响作物产量和经济稳定的首要问题。本技术综述探讨了用于识别和分类不同植物叶片疾病的各种机器学习(ML)和深度学习(DL)方法。本文综述了当前最先进的机器学习、深度学习和物联网疾病预测系统,以及它们在智能农业中开发智能系统的最新进展。它提供了对各种技术发展的见解,并讨论了基于人工智能的模型在植物病害管理中的好处和机会。
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引用次数: 0
A multi-layered data service model for Cyber-Physical Production Networks 面向信息物理生产网络的多层数据服务模型
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-12-31 DOI: 10.1016/j.jii.2025.101043
Ada Bagozi, Devis Bianchini, Massimiliano Garda, Michele Melchiori, Anisa Rula
In modern smart factories, supply chains are no longer isolated; instead, they are evolving into interconnected and dynamic networks, where intertwined supply chains enable real-time collaboration and data sharing for adaptive decision-making across multiple stakeholders. By harnessing data from sensors and connected devices, data-driven decisions can be made to optimize the entire supply chain, and to provide novel and customer-friendly products and services. Cyber-Physical Systems form the foundation of Cyber-Physical Production Systems (CPPS) by enabling real-time data exchange and intelligent automation at the factory level, while horizontal integration connects CPPS across different production facilities to enhance supply chain coordination, thus forming the so-called Cyber-Physical Production Networks (CPPN). In CPPN, the Internet of Services (IoS) paradigm, in combination with the Internet of Things (IoT), plays a crucial role in facilitating horizontal integration and seamless collaboration between intertwined supply chains. Since the IoS paradigm has to enable data sharing and processing within individual smart factories and across factory borders, there is a need to design service-oriented architectures specifically tailored to data governance in both CPPS and CPPN. However, existing service-oriented approaches for CPPS primarily focus on deployment layers (e.g., fog/edge computing or IT/production levels) while neglecting data-oriented aspects, limiting modularity and effective data service design across CPPS and CPPN levels. To bridge this gap, in this paper, we propose a multi-layered service-oriented model for CPPN focused on data services, which includes atomic services for data collection and processing, and composite services for governing the data flow within smart factories and throughout the supply chains they participate in. One of the significant advantages of the multi-layered approach is a clear separation of concerns in service design, with the ability to address issues of modularity, scalability, data sovereignty and data access, by distinguishing between CPPS and CPPN levels. In the paper, we critically evaluate different strategies for the management of a service ecosystem that is compliant with the proposed model.
在现代智能工厂中,供应链不再是孤立的;相反,它们正在演变成相互关联和动态的网络,其中相互交织的供应链能够实现实时协作和数据共享,以便跨多个利益相关者进行适应性决策。通过利用来自传感器和连接设备的数据,可以做出数据驱动的决策,以优化整个供应链,并提供新颖和客户友好的产品和服务。信息物理系统通过在工厂层面实现实时数据交换和智能自动化,构成了信息物理生产系统(CPPS)的基础,而横向集成将不同生产设施的CPPS连接起来,以加强供应链协调,从而形成所谓的信息物理生产网络(CPPN)。在CPPN中,服务互联网(IoS)范式与物联网(IoT)相结合,在促进相互交织的供应链之间的横向整合和无缝协作方面发挥着至关重要的作用。由于IoS范例必须支持在单个智能工厂内和跨工厂边界进行数据共享和处理,因此需要设计面向服务的体系结构,专门针对CPPS和CPPN中的数据治理进行定制。然而,现有的面向服务的CPPS方法主要关注部署层(例如雾/边缘计算或IT/生产层),而忽略了面向数据的方面,限制了CPPS和CPPN级别的模块化和有效的数据服务设计。为了弥补这一差距,在本文中,我们为CPPN提出了一个以数据服务为重点的多层面向服务模型,其中包括用于数据收集和处理的原子服务,以及用于管理智能工厂及其参与的整个供应链中的数据流的组合服务。多层方法的一个显著优点是服务设计中关注点的清晰分离,通过区分CPPS和CPPN级别,能够解决模块化、可伸缩性、数据主权和数据访问等问题。在本文中,我们批判性地评估了与所提出的模型兼容的服务生态系统管理的不同策略。
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引用次数: 0
Multi-source domain adaptation via evidence-based target pseudo-labels for human–computer collaboration fault diagnosis 基于循证目标伪标签的多源领域自适应人机协同故障诊断
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.jii.2026.101077
Jilun Tian , Hao Luo , Pengfei Yan , Xinyu Qiao , Shimeng Wu , Jiusi Zhang
Existing data-driven fault diagnosis methods imply the decision-making automatically, but lack adaptation and trustworthiness for varying working conditions. Unsupervised domain adaptation (UDA) relies on the cross-domain distribution disparity to achieve high-performance diagnostics. However, it struggles in complex multi-domain and diverse-source scenarios, which currently lack in-depth analysis. The proposed approach implements a novel multi-source domain adversarial network (MSDA) architecture via evidence-based target pseudo-label learning (ETPL) with dynamic multi-loss weightings. Specifically, MSDA constrains the disparity of diverse source–target pairs to obtain generalized domain-invariant features via an adversarial mechanism, and ETPL performs target pseudo-label learning while applying Dempster–Shafer (DS) evidence theory to assign sample-wise weights through MSDA and an unsupervised algorithm. Meanwhile, this study provides a theoretical analysis including a detailed generalization error bound for multi-source scenarios and target pseudo-labels, illustrating its dependence on distribution discrepancy and pseudo-label quality metrics. Human–computer collaboration approach is adopted to strengthen both advantages from human and machines by sample-wise analysis. Sufficient experimental results on two real-world case studies validate the effectiveness, successfully accomplishing complex cross-domain fault diagnosis and illustrating its potential applications in industrial settings.
现有的数据驱动故障诊断方法意味着自动决策,但缺乏对不同工况的适应性和可靠性。无监督域自适应(UDA)依赖于跨域分布差异来实现高性能诊断。然而,它在复杂的多领域、多源场景中存在困难,目前缺乏深入的分析。该方法通过动态多损失加权的基于证据的目标伪标签学习(ETPL)实现了一种新的多源域对抗网络(MSDA)架构。具体而言,MSDA通过对抗机制约束不同源-目标对的差异以获得广义域不变特征,ETPL在进行目标伪标签学习的同时,通过MSDA和无监督算法应用Dempster-Shafer (DS)证据理论分配样本权值。同时,本文对多源场景和目标伪标签的泛化误差界进行了理论分析,说明了其对分布差异和伪标签质量指标的依赖关系。采用人机协作的方法,通过样本分析强化人与机器的优势。两个实际案例的充分实验结果验证了该方法的有效性,成功地完成了复杂的跨域故障诊断,并说明了其在工业环境中的潜在应用。
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引用次数: 0
A knowledge-driven decision support architecture for sustainable supplier analysis in an infrastructure project 一个知识驱动的决策支持架构,用于基础设施项目中可持续的供应商分析
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-10-25 DOI: 10.1016/j.jii.2025.100994
Song-Shun Lin , Xin-Jiang Zheng , Zhao-Yao Bao
As supplier analysis becomes increasingly complex, there is a growing need for structured methods that support multi-dimensional evaluation under uncertainty. A knowledge-driven decision support approach (KDDSA) is proposed, leveraging entropy-based interval-valued spherical fuzzy sets to assign criteria weights. Additionally, a weighted coefficient of variation is introduced to measure consensus and account for variability in judgments, strengthening decision-making reliability. The proposed approach addresses the practical challenges of integrating multiple, often conflicting criteria in supplier analysis by incorporating economic, environmental, social, and supplier-specific dimensions, structured across sixteen indicators. To assess its practical applicability, KDDSA is applied to an infrastructure project, where uncertain assessments are integrated and processed through a multi-layered decision structure. The results highlight the critical importance of consensus building and uncertainty management for achieving reliable outcomes. By integrating heterogeneous information with advanced fuzzy modeling, the proposed approach enhances industrial information integration in complex decision-making contexts. The findings reinforce the potential of structured and information-integrated evaluation methods in enhancing supplier management within infrastructure supply chains.
随着供应商分析变得越来越复杂,越来越需要结构化的方法来支持不确定性下的多维评估。提出了一种知识驱动决策支持方法(KDDSA),利用基于熵的区间值球面模糊集来分配标准权重。此外,还引入了加权变异系数来衡量共识并考虑判断中的可变性,从而增强了决策的可靠性。提议的方法通过将经济、环境、社会和供应商特定维度结合起来,跨越16个指标,解决了在供应商分析中整合多个经常相互冲突的标准的实际挑战。为了评估其实际适用性,将KDDSA应用于基础设施项目,其中不确定性评估通过多层决策结构进行集成和处理。研究结果强调了建立共识和管理不确定性对于实现可靠结果的关键重要性。该方法将异构信息与高级模糊建模相结合,增强了复杂决策环境下的产业信息集成能力。研究结果加强了结构化和信息集成评估方法在加强基础设施供应链内供应商管理方面的潜力。
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引用次数: 0
Ensemble-based ship weather multi-objective route optimization 基于集成的船舶天气多目标航路优化
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.jii.2026.101075
Kumars Mahmoodi , Jari Böling , Roberto Vettor
Many traditional and state-of-the-art ship routing methods rely on single-objective formulations, deterministic weather inputs, or fixed operational assumptions, which may lead to suboptimal or impractical routing decisions under realistic and uncertain marine environments. This study presents an ensemble-based multi-objective optimization framework for ship route planning under uncertain weather conditions. The framework integrates a neural network model, trained on real onboard ship performance data and tuned using Bayesian hyperparameter optimization, to predict fuel consumption based on ship speed and marine weather parameters. An ensemble of weather forecasts is assigned to route waypoints using a bootstrapping method, enabling the evaluation of multiple cost functions reflecting trade-offs between voyage time, fuel consumption, and safety. Four optimization objective strategies — ensemble mean, worst-case, risk-aware, and Conditional Value-at-Risk (CVaR) — are implemented within a Grey Wolf Optimizer (GWO) to derive optimal routes across various voyages. The results demonstrate notable variations in route performance based on the selected strategy. For example, the CVaR approach achieves a balance between robustness and efficiency, with voyage fuel consumption for the longest journey (Voyage 3) reaching 490,475 kg, while the worst-case strategy prioritizes risk-averse paths, resulting in the highest fuel usage at 505,308 kg. Conversely, the ensemble mean strategy offers the lowest average fuel consumption (474,078 kg) but may expose the voyage to higher uncertainty. Furthermore, the proposed GWO demonstrates high precision in schedule adherence, maintaining arrival time deviations within a 30-minute margin across all optimized voyages, thereby justifying its effectiveness in handling complex multi-objective constraints. The developed framework is applicable to real-time voyage optimization and can support ship operators in achieving fuel efficiency and safety under varying ocean conditions.
许多传统和最先进的船舶路由方法依赖于单目标公式、确定性天气输入或固定的操作假设,这可能导致在现实和不确定的海洋环境下的次优或不切实际的路由决策。针对不确定天气条件下船舶航路规划问题,提出了一种基于集成的多目标优化框架。该框架集成了一个神经网络模型,该模型接受了真实船载性能数据的训练,并使用贝叶斯超参数优化进行了调整,可以根据船速和海洋天气参数预测燃油消耗。使用自举方法将天气预报集合分配给航线航路点,从而能够评估反映航行时间、燃料消耗和安全之间权衡的多个成本函数。在灰狼优化器(GWO)中实现了四种优化目标策略——集合均值、最坏情况、风险意识和条件风险值(CVaR),以获得跨不同航程的最佳路线。结果表明,根据所选择的策略,路由性能会发生显著变化。例如,CVaR方法实现了鲁棒性和效率之间的平衡,最长航程(航程3)的航次燃油消耗达到490,475 kg,而最坏情况策略优先考虑风险规避路径,导致最高的燃油消耗为505,308 kg。相反,整体平均策略提供最低的平均燃料消耗(474,078公斤),但可能使航行面临更高的不确定性。此外,所提出的GWO在计划遵守方面具有很高的精度,在所有优化的航程中保持30分钟的到达时间偏差,从而证明了其在处理复杂的多目标约束方面的有效性。所开发的框架适用于实时航行优化,可以支持船舶运营商在不同的海洋条件下实现燃油效率和安全性。
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引用次数: 0
Information scene-augmented mapping for smart bearing whole life cycle digital twin 面向智能轴承全生命周期数字孪生的信息场景增强映射
IF 10.4 1区 计算机科学 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2026-03-01 Epub Date: 2025-12-01 DOI: 10.1016/j.jii.2025.101021
Zixian Li , Hebin Zheng , Shenlan Liu , Wenbin Huang , Xiaoxi Ding , Xiaohui Chen
Benefiting from the digitization of mechanical equipment, the digital twin of smart bearing can better realize the whole life cycle intelligent operation and maintenance of mechanical equipment, where the twin data are normally utilized to realize the state mapping with the identification or prediction model. Whereas, this process is mostly single interaction, and the dynamic update of the twin model and mapping results is not considered, and this makes its real application difficult. Focusing on this issue, an information scene-augmented mapping method (ISAM) is proposed for the smart bearing whole life cycle digital twin, so as to realize the accurate dynamic interaction of virtual-real scene in the twinning process. Different from the conventional digital twin models, ISAM creates an state mapping method that can dynamically update real state and simulation parameters, and it simultaneously enhances the scenario self-consistency ability based on information scene augment. First, a physical information and prior-knowledge driven feature parameter matching network (PK-FPMN) was constructed, and the actual fault size can be dynamically matched by the measured data and the dynamic model. This will realize the virtual-real scene interaction of the digital twin. Considering the difference between the twin data and the actual data, progressive style cyclic enhancement network (PSCEN) model is then introduced in the parameter matching process. By transferring the style information of the measured information scene to the twin data, the self-consistency ability of the method in different application scenarios is improved. Finally, ISAM combines the physical entity and dynamic model to form a whole life cycle digital twin of smart bearing. And the mapped degradation state and twin data can be operated for state identification and degradation prediction. Experimental results demonstrate that the ISAM can accurately map the actual degradation state and improve the quality of twin data based on the real information scene. With virtual scene and real scene interacted, the degradation state and twin data can be used for accurately state identification and degradation prediction. It can be foreseen that the proposed ISAM for smart bearing has the potential to realize the intelligent operation and maintenance of mechanical equipment in actual industrial digitization scenarios.
受益于机械设备的数字化,智能轴承的数字孪生可以更好地实现机械设备全生命周期的智能运维,其中孪生数据通常用于实现带有识别或预测模型的状态映射。但该方法多为单次交互,未考虑孪生模型和映射结果的动态更新,给实际应用带来困难。针对这一问题,提出了一种面向智能轴承全生命周期数字孪生的信息场景增强映射方法(ISAM),以实现孪生过程中虚拟与真实场景的精确动态交互。与传统的数字孪生模型不同,ISAM创建了一种能够动态更新真实状态和仿真参数的状态映射方法,同时基于信息场景增强增强了场景自一致性。首先,构建物理信息和先验知识驱动的特征参数匹配网络(PK-FPMN),通过实测数据和动态模型实现实际故障尺寸的动态匹配;这将实现数字孪生体的虚实场景交互。考虑到孪生数据与实际数据的差异,在参数匹配过程中引入渐进式循环增强网络(PSCEN)模型。通过将实测信息场景的样式信息传递到双数据中,提高了该方法在不同应用场景下的自一致性。最后,ISAM将物理实体与动态模型相结合,形成智能轴承全生命周期数字孪生。并利用映射的退化状态和孪生数据进行状态识别和退化预测。实验结果表明,基于真实信息场景的ISAM能够准确映射出实际的退化状态,提高孪生数据的质量。通过虚拟场景和真实场景的交互,可以利用退化状态和孪生数据进行准确的状态识别和退化预测。可以预见,提出的智能轴承ISAM具有实现实际工业数字化场景下机械设备智能运维的潜力。
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Journal of Industrial Information Integration
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