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Twin model-based fault detection and tolerance approach for in-core self-powered neutron detectors 被引量:1
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作者 Jing Chen Yan-Zhen Lu +2 位作者 Hao Jiang Wei-Qing Lin Yong Xu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第8期86-99,共14页
The in-core self-powered neutron detector(SPND)acts as a key measuring device for the monitoring of parameters and evaluation of the operating conditions of nuclear reactors.Prompt detection and tolerance of faulty SP... The in-core self-powered neutron detector(SPND)acts as a key measuring device for the monitoring of parameters and evaluation of the operating conditions of nuclear reactors.Prompt detection and tolerance of faulty SPNDs are indispensable for reliable reactor management.To completely extract the correlated state information of SPNDs,we constructed a twin model based on a generalized regression neural network(GRNN)that represents the common relationships among overall signals.Faulty SPNDs were determined because of the functional concordance of the twin model and real monitoring sys-tems,which calculated the error probability distribution between the model outputs and real values.Fault detection follows a tolerance phase to reinforce the stability of the twin model in the case of massive failures.A weighted K-nearest neighbor model was employed to reasonably reconstruct the values of the faulty signals and guarantee data purity.The experimental evaluation of the proposed method showed promising results,with excellent output consistency and high detection accuracy for both single-and multiple-point faulty SPNDs.For unexpected excessive failures,the proposed tolerance approach can efficiently repair fault behaviors and enhance the prediction performance of the twin model. 展开更多
关键词 Self-powered neutron detector twin model Fault detection Fault tolerance Generalized regression neural network Nuclear power plant
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Digital twin model of gas turbine and its application in warning of performance fault 被引量:3
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作者 Minghui HU Ya HE +3 位作者 Xinzhi LIN Ziyuan LU Zhinong JIANG Bo MA 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2023年第3期449-470,共22页
The digital twin-driven performance model provides an attractive option for the warn gas-path faults of the gas turbines.However,three technical difficulties need to be solved:(1)low modeling precision caused by indiv... The digital twin-driven performance model provides an attractive option for the warn gas-path faults of the gas turbines.However,three technical difficulties need to be solved:(1)low modeling precision caused by individual differences between gas turbines,(2)poor solution efficiency due to excessive iterations,and(3)the false alarm and missing alarm brought by the traditional fixed threshold method.This paper proposes a digital twin model-based early warning method for gas-path faults that breaks through the above obstacles from three aspects.Firstly,a novel performance modeling strategy is proposed to make the simulation effect close to the actual gas turbine by fusing the mechanism model and measurement data.Secondly,the idea of controlling the relative accuracy of model parameters is developed.The introduction of an error module to the existing model can greatly shorten the modeling cycle.The third solution focuses on the early warning based on the digital twin model,which self-learns the alarm threshold of the warning feature of gas-path parameters using the kernel density estimation.The proposed method is utilized to analyze actual measured data of LM2500+,and the results verify that the new-built digital model has higher accuracy and better efficiency.The comparisons show that the proposed method shows evident superiority in early warning of performance faults for gas turbines over other methods. 展开更多
关键词 Gas turbine Digital twin model Gas-path fault warning Deviation degree analysis Performance simulation
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基于Twin Builder的110kV油浸式变压器3维磁场降阶模型及损耗分析
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作者 张重远 刘迪程 +2 位作者 高成龙 刘云鹏 刘刚 《高电压技术》 EI CAS CSCD 北大核心 2024年第3期941-951,共11页
为解决3维变压器磁场有限元仿真计算效率低的问题,提出基于本征正交分解法的磁场降阶模型与基于二次多项式的损耗响应面模型。以1台110 kV变压器为算例,首先建立了考虑绕组涡流损耗的变压器磁场仿真模型,通过仿真分析了其在额定工况下... 为解决3维变压器磁场有限元仿真计算效率低的问题,提出基于本征正交分解法的磁场降阶模型与基于二次多项式的损耗响应面模型。以1台110 kV变压器为算例,首先建立了考虑绕组涡流损耗的变压器磁场仿真模型,通过仿真分析了其在额定工况下的磁场及损耗分布;其次,通过仿真试验设计获取了多组工况下的磁场与损耗数据,在Twin Builder中训练得到变压器磁场的各降阶模块;最后,搭建面向数字孪生应用的变压器3维磁场降阶模型,实现了变压器磁场损耗的快速计算与云图分布的可视化。与计算单数据相比,仿真结果考虑了涡流效应的绕组损耗在靠近端部时有明显升高,最大值分别出现在高、低压绕组两端,约为绕组中部损耗的1.3~1.65倍。基于该磁场结果建立的降阶模型在计算效率方面较全阶模型有显著提升,将实际仿真时间缩短至0.76s,可满足数字孪生应用场景下的磁场快速计算需求。 展开更多
关键词 油浸式变压器 数字孪生 twin Builder 本征正交分解 响应面法 降阶模型
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Three-dimensional Modeling for Predicting the Vibration Modes of Twin Ball Screw Driving Table 被引量:5
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作者 WANG Renche ZHAO Tong +1 位作者 YE Peiqing LIU Yan 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2014年第1期211-218,共8页
As a redundant drive mechanism, twin ball screw feed system has the advantage of high stiffness and little yaw vibration in the feeding process, while leads to increased difficulty with vibration characteristics analy... As a redundant drive mechanism, twin ball screw feed system has the advantage of high stiffness and little yaw vibration in the feeding process, while leads to increased difficulty with vibration characteristics analysis and structure optimization. Only low-dimensional structure and dynamics parameters are considered in the existing research, the complete and effective model for predicting the table's vibrations is lacked. A three-dimensional(3D) mechanical model of twin ball screw driving table is proposed. In order to predict the vibration modes of the table quantitatively, an analytical formulation following a comprehensive approach is developed, where the drive system is modeled as a lumped mass-spring system, and the Lagrangian method is used to obtain the table's independent and coupled axial, yaw, and pitch vibration modes. The frequency variation of each mode is studied for different heights of the center of gravity, nut positions and table masses by numerical simulations. Modal experiment is carried out on the Z-axis feed table of the horizontal machining center MCH63. The results show that for each mode, the error between the estimated and the measured frequencies is less than 13%. The independent and coupled vibration modes are in accordance with the experimental results, respectively The proposed work can serve a better understanding of the table's dynamics and be beneficial for optimizing the structure parameters of twin ball screw drive system in the design stage. 展开更多
关键词 twin ball screw drive dynamic modeling vibration mode
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Single Production of Top Quark via e^-γ Collision in Left-Right Twin Higgs Model
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作者 LIU Yao-Bei WANG Xue-Lei +1 位作者 CAO Jun HAN Hong-Mei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第8期445-450,共6页
In the context of the left-right twin Higgs (LRTH) model, we fist study single production of the standard model (SM) top quark via e-γ collisions. We find that the corrections of the LRTH model to the cross secti... In the context of the left-right twin Higgs (LRTH) model, we fist study single production of the standard model (SM) top quark via e-γ collisions. We find that the corrections of the LRTH model to the cross section of the process e-γ→vebt might be observed only for f ≤750 GeV and the heavy top quark mass scale M ≥500 GeV in future high energy linear e^+e^- collider (LC) experiment with the center-of-mass (CM) energy √s = 500 GeV and a yearly integrated luminosity of £ = 100 fb^-1. We also consider single production of the heavy top quark T via e-γ collisions. Our numerical results show that the possible signals of the heavy top quark T might be observed via the decay channel T →Ф^+b→tbb in future LC experiment with √s = 3 TeV and £ = 500 fb^-1. 展开更多
关键词 left-right twin Higgs model free parameter cross section
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Production of Charged Higgs Bosons from Left-Right Twin Higgs Model at TeV Energy e^-γ Colliders
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作者 申杰奋 刘要北 +1 位作者 赵晖 曹军 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第10期701-708,共8页
The left-right twin Higgs (LRTH) model predicts the existence of three additional Higgs bosons: one neutral Higgs φo and a pair of charged Higgs bosons φ±. In this paper, we study two pair production process... The left-right twin Higgs (LRTH) model predicts the existence of three additional Higgs bosons: one neutral Higgs φo and a pair of charged Higgs bosons φ±. In this paper, we study two pair production processes of these new particles at the next generation eγ colliders, i.e., e-γ → e-φ+φ- , and e-γ→vRφ-φ0. We find that the production cross section of the process e-γ → e-φ+φ- are at the level of several tens fb, the production cross section of the process e-γ→vRφ-φ0 can reach 0.35 fb with the reasonable parameter values. As long as the charged Higgs bosons are not too heavy, we conclude that these processes might be used to test for the left-right twin Higgs model in future high-energy linear collider experiments. 展开更多
关键词 left-right twin Higgs model charged Higgs boson ILC
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Water Modeling of Twin-Roll Strip Casting 被引量:8
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作者 WANG Bo ZHANG Jie-yu +3 位作者 FAN Jun-fei ZHAO Shun-li FANG Yuan AN Sheng-li 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2006年第1期14-17,共4页
Twin-roll strip casting is regarded as a prospective technology of near net shape continuous casting. The fluid flow field and level fluctuation in the pool have a strong influence not only on composition and temperat... Twin-roll strip casting is regarded as a prospective technology of near net shape continuous casting. The fluid flow field and level fluctuation in the pool have a strong influence not only on composition and temperature homogeneity of pool, but also on the strip quality. A 1 : 1 water model of a twin-roll strip caster was set up based on the criteria of Froude number and Reynold number similarity. The level fluctuation was measured. The influence of pool depth, casting speed and feeding system configuration on level fluctuation in the pool was studied. The experimental results provided a basis for the optimization of feeding system and process parameters. 展开更多
关键词 twin-roll strip casting level fluctuation water modeling
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Associated ZH and WH Production in Left-Right Twin Higgs Model at LHC
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作者 张艳菊 鲁公儒 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第7期119-124,共6页
At the CERN large hadron collider (LHC), production of the Higgs boson in association with Z or W bosons provides a dramatic experimental signal for detecting the standard model (SM) Higgs boson. In this paper, we... At the CERN large hadron collider (LHC), production of the Higgs boson in association with Z or W bosons provides a dramatic experimental signal for detecting the standard model (SM) Higgs boson. In this paper, we consider the contributions of the left-right twin Higgs (LRTH) model to the processes qq' --~ Z(W)H. Our numerical results show that, in the favorable parameter spaces, the cross sections deviate distinctly from the predictions of the SM. The possible signals of the LRTH model can be detected via these processes at the LHC experiments. 展开更多
关键词 left-right twin Higgs model large hadron collider relation corrections
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Single Production of Charged Gauge Boson W_H^-from Left-Right Twin Higgs Model in Association with Top Quark at LHC
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作者 LIU Yao-Bei WANG Xue-Lei +1 位作者 HAN Hong-Mei CAO Yong-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第4期977-980,共4页
The twin Higgs mechanism has recently been proposed to solve the little hierarchy problem. In the context of the left-right twin Higgs (LRTH) model, we discuss single production of the new charged gauge boson WH^- ,... The twin Higgs mechanism has recently been proposed to solve the little hierarchy problem. In the context of the left-right twin Higgs (LRTH) model, we discuss single production of the new charged gauge boson WH^- , which is predicted by the left-right twin Higgs model, in association with top quark at the CERN Large Hadron Collider (LHC). It is found that, for a typical nonzero value of mass mixing parameter M = 150 GeV in the LRTH model, the production cross section is in the range of 3 ×10^-2 - 6.07×10^3 fb at the LHC. As long as the WH^- is not too heavy, the possible signatures of the heavy charged gauge boson might be detected at the LHC experiments. 展开更多
关键词 left-right twin Higgs model cross section new charged gauge boson
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Synchro-control of Twin-rudder with Cloud Model 被引量:3
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作者 Sheng Liu Xu-Cheng Chang 《International Journal of Automation and computing》 EI 2012年第1期98-104,共7页
In ships having two rudders, an angle error exists if there is a difference in structural and electrical parameters in two steering gear systems. Such an error also results in reduced efficiency of ship maneuverabilit... In ships having two rudders, an angle error exists if there is a difference in structural and electrical parameters in two steering gear systems. Such an error also results in reduced efficiency of ship maneuverability during navigation. For the sake of reducing the angle error, a synchro-ballistic control approach based on cloud model is proposed in this paper. First, the mechanism model of steering gear system is introduced. Second, the structure of synchro-control system of twin-rudder is proposed based on the master-slave control strategy. Third, synchro-ballistic controller based on cloud model is designed to solve the nonlinearity and uncertainty of system. Finally, the designed controller is tested via simulation under two different situations. The simulated results demonstrate that this method is simple and has stronger robustness against the variation of states and parameters of plants. Hence, the validity and reliability of the method is proved for synchro-control of two rudders, which is a significant engineering application. 展开更多
关键词 Ship steering steering gear twin-rudder synchro-ballistic cloud model.
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水利部数字孪生流域模型管理云平台设计及应用研究 被引量:6
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作者 贺挺 李凤生 +2 位作者 成建国 胡蒙 赵连国 《水利水电技术(中英文)》 北大核心 2024年第2期1-15,共15页
【目的】智慧水利是推动新阶段水利高质量发展的实施路径之一,建设数字孪生流域是实现智慧水利的核心与关键。为提升水利部数字孪生平台建设中水利模型的易用性、可扩展性、复用率和可维护性【方法】按照数字孪生流域水利模型建设“标... 【目的】智慧水利是推动新阶段水利高质量发展的实施路径之一,建设数字孪生流域是实现智慧水利的核心与关键。为提升水利部数字孪生平台建设中水利模型的易用性、可扩展性、复用率和可维护性【方法】按照数字孪生流域水利模型建设“标准化、模块化、云服务”的要求,采用“分治+集成”的思想,基于组件技术、工作流技术、SOA架构和容器技术等构建水利部数字孪生流域模型管理云平台。平台通过提供水利专业模型、智能识别模型的组件化封装和流程化搭建功能,以微服务的方式对外提供模型共享和模型计算服务。【结果】依托重点研发项目分别在示范区域——屯溪流域和白鹤滩水库开展“洪水预报-预警-调度”业务应用和工程管理范围形变监测业务应用,验证了平台设计的合理性和应用的可行性。【结论】研究成果可为数字孪生流域模型平台的建设与应用提供一定技术支持和经验借鉴。 展开更多
关键词 数字孪生流域 模型平台 组件技术 SOA架构 容器技术 高质量发展 预测
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面向防洪“四预”的数字孪生流域水利专业模型研发与实践应用--以数字孪生飞云江流域为例 被引量:3
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作者 任明磊 赵丽平 +5 位作者 陈智洋 魏国振 唐榕 王刚 喻海军 夏志昌 《中国水利》 2024年第5期58-64,共7页
数字孪生流域是推动智慧水利建设的核心和关键,而水利专业模型是数字孪生流域建设的重要算法支撑。从实际业务支撑角度研发面向防洪“四预”的数字孪生流域水利专业模型,包括水文、水动力、水工程调度、风暴潮等模型,并以浙江省温州市... 数字孪生流域是推动智慧水利建设的核心和关键,而水利专业模型是数字孪生流域建设的重要算法支撑。从实际业务支撑角度研发面向防洪“四预”的数字孪生流域水利专业模型,包括水文、水动力、水工程调度、风暴潮等模型,并以浙江省温州市的数字孪生飞云江流域为载体进行实践应用。结果显示,在应对台风“杜苏芮”“卡努”“鸿雁”过程中,各类模型运行情况良好,水文、水动力及风暴潮模型预报值与实测值拟合程度较高,误差满足规范许可要求,水工程调度模型可实现模型预期调度效果。研发的水利专业模型和应用案例可为其他流域数字孪生建设提供参考。 展开更多
关键词 数字孪生 水文模型 水动力模型 水库调度 风暴潮模拟
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Study on heat source model in twin-arc GMAW with a common weld pool
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作者 赵朋成 王璐璐 +1 位作者 刘春廷 黄石生 《China Welding》 EI CAS 2009年第3期7-11,共5页
The heat input from arcs to weld pool in twin-arc gas metal arc welding (GMAW) with a common weld pool is investigated by high-speed photography. The characteristics of arc shapes and droplet transfer are studied an... The heat input from arcs to weld pool in twin-arc gas metal arc welding (GMAW) with a common weld pool is investigated by high-speed photography. The characteristics of arc shapes and droplet transfer are studied and then the models for heat flux distribution on top surface of weld pool and enthalpy distribution of metal droplets transferred into weld pool are established. By using the model, 3-D geometries of weld pools in twin-arc GMAW with a common weld pool are predicted. Corresponding welding experiments on mild steel plates are carried out and the results indicate that the predicted shape of weld bead on cross section shows good agreement with measured one. 展开更多
关键词 droplet transfer heat source model enthalpy distribution twin-arc GMAW
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结合数字孪生的斜拉桥系统更新和响应预测 被引量:1
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作者 方圣恩 郭新宇 《振动.测试与诊断》 EI CSCD 北大核心 2024年第1期11-17,193,共8页
由于传统建模方法难以反馈桥梁系统参数和响应的细微变化,为此提出了以数字孪生体作为结构系统的高保真映射模型。首先,定义数字孪生体包含物理孪生层、数字孪生层和信息交互媒介3部分,数字孪生层的孪生模型是对斜拉桥物理实体的虚拟映... 由于传统建模方法难以反馈桥梁系统参数和响应的细微变化,为此提出了以数字孪生体作为结构系统的高保真映射模型。首先,定义数字孪生体包含物理孪生层、数字孪生层和信息交互媒介3部分,数字孪生层的孪生模型是对斜拉桥物理实体的虚拟映射,通过信息交互媒介实现不同层间信息的实时传递;其次,针对具体应用提出了结构信息化、信息数据化和数据模型化3条建模准则,实现对斜拉桥物理实体的信息勾勒和可视化过程,建立高保真的斜拉桥数字孪生模型;最后,以一座实桥端锚索的监测数据为感知信息,将变化的索参数实时反馈给孪生模型,实现模型更新和响应预测。研究结果表明,所提出的数字孪生建模方法能及时反馈实桥的参数变化,并预测由此造成的索力、塔顶偏位及主梁跨中挠度的细微改变。 展开更多
关键词 斜拉桥 数字孪生体 建模框架和准则 孪生模型更新 信息交互媒介
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铁路智能客站数字孪生模型研究 被引量:1
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作者 王小书 史天运 +2 位作者 吕晓军 李超 杨国元 《铁道运输与经济》 北大核心 2024年第5期78-88,共11页
铁路智能客站数字孪生模型是智能客站的重要组成部分,对于客运组织方案、设备配置及布局优化、安全应急等仿真具有重要意义。研究提出智能客站数字孪生五维模型,给出客站物理实体、客站数字孪生体、客站虚实连接、客站孪生数据、客站孪... 铁路智能客站数字孪生模型是智能客站的重要组成部分,对于客运组织方案、设备配置及布局优化、安全应急等仿真具有重要意义。研究提出智能客站数字孪生五维模型,给出客站物理实体、客站数字孪生体、客站虚实连接、客站孪生数据、客站孪生体服务的内涵;设计客站孪生体服务的具体内容,包括可视化调度指挥、可视化监控运维等车站可视化服务,以及客运组织方案仿真、设备配置及布局优化模拟、安全应急仿真、环境舒适度调控仿真等模拟仿真服务;研究客站数字孪生体虚拟静模型与动行为模型建模关键技术。构建清河站数字孪生体并开展试验,验证可视化调度指挥、设备虚拟巡检、车站安全应急仿真等功能,实现清河站通过数字孪生体全面掌控车站状况。 展开更多
关键词 数字孪生 智能客站 智能铁路 数字孪生五维模型 孪生服务
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干散货码头数字孪生综合管控平台架构与实践 被引量:2
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作者 李林 张钊 +1 位作者 范垂荣 鲁东起 《水运工程》 2024年第1期189-195,共7页
为加快干散货智慧港口建设,探讨了数字孪生技术在干散货码头中的应用。分析干散货码头运营呈现出的自动化、信息化、智能化发展趋势,指出当前面临的数据爆炸性增长、数据采集不全面等挑战。在此基础上,对数字孪生在港口的应用领域进行... 为加快干散货智慧港口建设,探讨了数字孪生技术在干散货码头中的应用。分析干散货码头运营呈现出的自动化、信息化、智能化发展趋势,指出当前面临的数据爆炸性增长、数据采集不全面等挑战。在此基础上,对数字孪生在港口的应用领域进行分析梳理,围绕数字孪生模型内容,提出7大应用业务领域。通过干散货码头数字孪生的建设路线,提出以数据驱动和模型驱动为核心的数字孪生模型构建方法。结合干散货码头智能化建设现状,提出干散货码头数字孪生平台架构方案。选取典型门机设备和港区全局典型案例,分别从微观设备孪生构建和宏观全局孪生场景两个层面阐述应用实践经验,以期为智慧港口的发展与建设提供参考。 展开更多
关键词 智慧港口 干散货码头 数字孪生 数据驱动 模型驱动
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船用承压结构变形场混合数字孪生监测模型方法实现 被引量:1
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作者 谢红胜 黄子轩 +2 位作者 刘炎 朱嘉明 王泽 《中国舰船研究》 CSCD 北大核心 2024年第S01期52-61,共10页
[目的]旨在为实现船舶的全生命健康监测设计一种面向结构健康监测的混合数字孪生系统。可实时采集及反馈关键舱室结构的变形,从而提升航运的信息化和安全管理能力。[方法]首先,采用奇异值分解法对多组载荷形成的物理场信息进行数据压缩... [目的]旨在为实现船舶的全生命健康监测设计一种面向结构健康监测的混合数字孪生系统。可实时采集及反馈关键舱室结构的变形,从而提升航运的信息化和安全管理能力。[方法]首先,采用奇异值分解法对多组载荷形成的物理场信息进行数据压缩降维得到特定的标准正交基,创建基向量与载荷关系的响应面模型,输出基于实时输入载荷的有限元降阶模型。其次,采用基于地统计学的克里金插值算法,按照特定拓扑结构布点,将实时的传感器数据和降阶模型输出的补充点位数据经由卡尔曼滤波算法进行融合修正,共同计算监测对象的变形情况。最后,通过构建变形监测软硬件系统,实现监测物理特性的采集到可视化的全过程。[结果]该系统在预设的载荷下,硬件采集系统能够稳定进行数据采集,配套的应用程序能够按照预期的要求进行实时可视化采集。[结论]该结构健康混合数字孪生系统满足船舶的健康监测需求,对未来船舶的高度一体化、智能化发展具有一定的参考意义。 展开更多
关键词 混合数字孪生监测模型 克里金算法 数据融合
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基于数字孪生的桥式起重机自主运行系统研究
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作者 李辉 惠延波 +2 位作者 王瞧 王宏晓 周颖 《机电工程》 CAS 北大核心 2024年第4期691-700,共10页
为了提高桥式起重机的智能化水平和数字化水平,借助数字孪生技术,对一桥式起重机的安全自主运行系统进行了仿真和实验研究。首先,采用数字孪生思想构建了起重机自主运行系统整体架构,根据桥式起重机的实际运行情况,采用四模型(即虚拟模... 为了提高桥式起重机的智能化水平和数字化水平,借助数字孪生技术,对一桥式起重机的安全自主运行系统进行了仿真和实验研究。首先,采用数字孪生思想构建了起重机自主运行系统整体架构,根据桥式起重机的实际运行情况,采用四模型(即虚拟模型、物理动力学模型、行为控制模型和规则计算模型)的方法,构建了起重机的孪生模型;然后,在起重机孪生实验平台上进行了起重机路径规划和大小车轨迹跟踪仿真实验,采用了变论域模糊PID控制器,对起重机大小车轨迹跟踪进行了控制;最后,对该数字孪生系统进行了互联互通实物验证实验。研究结果表明:在起重机数字孪生系统中可以同步进行虚拟仿真和实物实验;在起重机大小车轨迹跟踪实验中,使用所提变论域模糊PID控制方法时,大车跟踪误差在±7 cm内,小车跟踪误差可达±6 cm,表明该控制方法的先进性;同时,该系统初步达成数字孪生技术虚实同步、虚实融合、虚实对照的目标,并且具有良好的三维可视化效果,可为推动机电装备的数字化进程提供一种思路。 展开更多
关键词 起重机 数字孪生系统 孪生模型 跟踪控制 虚拟仿真 变论域模糊PID控制器
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水利大模型的建设思路、构建框架与应用场景初探 被引量:3
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作者 钱峰 成建国 +4 位作者 夏润亮 丁昱凯 谢文君 陆佳民 李冰 《中国水利》 2024年第9期9-19,共11页
发展新质生产力是推动高质量发展的内在要求和重要着力点。推进数字孪生水利建设是推动新阶段水利高质量发展的显著标志和重要路径,模型和知识是数字孪生水利建设的关键所在。因此,按照“需求牵引、应用至上、数字赋能、提升能力”要求... 发展新质生产力是推动高质量发展的内在要求和重要着力点。推进数字孪生水利建设是推动新阶段水利高质量发展的显著标志和重要路径,模型和知识是数字孪生水利建设的关键所在。因此,按照“需求牵引、应用至上、数字赋能、提升能力”要求,针对水利业务需求融合大模型、水利专业模型和知识而形成“水利大模型”,是发展水利新质生产力的重要引擎。阐述了水利大模型的概念和构建的重要意义,介绍了构建的思路与总体框架,分析了需突破的关键技术,介绍了行业应用场景。研究成果可为人工智能大模型在水利行业落地提供引导和借鉴。 展开更多
关键词 数字孪生 水利大模型 水利知识平台 知识引擎 智能决策
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数字孪生在制造业中实现的关键技术及典型应用综述
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作者 陈燕 王禹封 +4 位作者 谯木 赵正彩 苏宏华 朱夏林 冯天民 《航空制造技术》 CSCD 北大核心 2024年第11期24-45,共22页
数字孪生技术是实现智能制造和工业数字化转型的关键技术,受到学术界和产业界的广泛关注和研究。近十年来,随着数据采集技术、计算机性能和相关智能算法的迅速发展,数字孪生技术的研究及应用取得了巨大进展。针对数字孪生技术应用领域... 数字孪生技术是实现智能制造和工业数字化转型的关键技术,受到学术界和产业界的广泛关注和研究。近十年来,随着数据采集技术、计算机性能和相关智能算法的迅速发展,数字孪生技术的研究及应用取得了巨大进展。针对数字孪生技术应用领域的多样性和对象层级的复杂性,本文回顾了数字孪生基本概念和模型的发展历程,综述了数字孪生技术在制造业应用的关键技术及其发展成果。在此基础上,阐述了数字孪生技术在制造业三个层级的应用现状以及数字孪生赋能智能制造的新范式。最后,展望了制造业数字孪生技术未来发展趋势,为后续研究提供参考。 展开更多
关键词 智能制造 数字孪生 数字化建模 智能终端 数据融合
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