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申请号:201911402079.X 公开号:CN111158314A 主分类号:G05B19/4097
申请人:【中文】东南大学【EN】SOUTHEAST University 申请日:2019.12.31 公开日:2020.05.15
摘要:【中文】本发明提出了一种基于数字孪生技术的卫星部装装配精度控制方法,首先基于数字孪生技术在虚拟空间中搭建卫星产品的装配孪生模型并以此进行装配工艺设计,然后分析影响产品装配精度的相关数据,在信息平台上构建装配精度信息模型并进行卫星整体装配精度仿真及预测,再依据装配精度仿真结果进行装配工艺优化,之后进入装配实施阶段,在卫星部装装配过程中不断更新装配信息模型和预测卫星整体装配精度,根据每次的预测结果实现对卫星整体装配精度的控制。本发明解决了传统装配过程中由于零件误差、零件选配、人员操作和工装夹具等问题导致的装配偏差累积问题,实现了对装配偏差超差的提前预警以及对装配精度的控制,提高了装配工作效率和装配成功率。 【EN】The invention provides a satellite partial assembly precision control method based on a digital twinning technology, which comprises the steps of firstly building an assembly twinning model of a satellite product in a virtual space based on the digital twinning technology, carrying out assembly process design according to the assembly twinning model, then analyzing relevant data influencing the assembly precision of the product, building an assembly precision information model on an information platform, carrying out satellite overall assembly precision simulation and prediction, carrying out assembly process optimization according to an assembly precision simulation result, then entering an assembly implementation stage, continuously updating the assembly information model and predicting the satellite overall assembly precision in the satellite partial assembly process, and realizing the control of the satellite overall assembly precision according to the prediction result of each time. The invention solves the problem of assembly deviation accumulation caused by part errors, part matching, personnel operation, tool fixtures and other problems in the traditional assembly process, realizes early warning on the out-of-tolerance of the assembly deviation and control on the assembly precision, and improves the assembly work efficiency and the assembly success rate.
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申请号:201911227407.7 公开号:CN111145236A 主分类号:G06T7/521
申请人:【中文】东南大学【EN】SOUTHEAST University 申请日:2019.12.04 公开日:2020.05.12
摘要:【中文】本发明涉及一种基于数字孪生的产品拟实物装配模型生成方法及实现框架,包括物理实体层、孪生数据层、虚拟实体层;通过信息物理融合技术将产品物理实物与虚拟数字模型进行深度融合,借助物理实体层的感知测量设备获取零件表面的离散点云数据,经由测量数据预处理,通过引入孪生数据层的装配误差补偿数据对其零件表面几何特征进行重构,生成零件拟实物模型;依据虚拟实体层提取装配定位约束信息,对零件拟实物模型进行真实特征元素配准与装配重定位,从而得到产品拟实物装配模型。本发明可用于产品装配模型的高保真度表达,所构建的产品拟实物装配模型也可作为三维装配工艺设计与装配精度预测的基础,为复杂产品装配过程智能闭环控制提供支持。 【EN】The invention relates to a method for generating a product simulated physical assembly model based on digital twins and an implementation framework, wherein the method comprises a physical entity layer, a twins data layer and a virtual entity layer; the method comprises the steps of carrying out deep fusion on a physical real object and a virtual digital model of a product through an information physical fusion technology, obtaining discrete point cloud data of the surface of a part by means of perception measurement equipment of a physical real object layer, and reconstructing geometrical characteristics of the surface of the part by introducing assembly error compensation data of a twin data layer through measurement data preprocessing to generate a part virtual real object model; and extracting assembly positioning constraint information according to the virtual entity layer, and performing real characteristic element registration and assembly repositioning on the part simulation entity model to obtain the product simulation entity assembly model. The method can be used for high-fidelity expression of a product assembly model, and the constructed product simulation object assembly model can also be used as the basis of three-dimensional assembly process design and assembly precision prediction, thereby providing support for intelligent closed-loop control in the assembly process of complex products.
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申请号:201911407497.8 公开号:CN111274671A 主分类号:G06F30/20
申请人:【中文】东南大学【EN】SOUTHEAST University 申请日:2019.12.31 公开日:2020.06.12
摘要:【中文】本发明公开了一种基于数字孪生的复杂产品装配过程精准修配方法及其运行系统,针对产品装配过程中的关键工序,对零件装配配合区域进行实测数据采集与处理,将实测数据与理想模型进行深度融合,构建零件数字孪生模型;结合规划好的装配顺序对零件装配定位约束进行求解与更新,以获得产品数字孪生模型;将该产品数字孪生模型用于预装配仿真分析中,根据装配仿真分析结果以及装配碰撞干涉检查情况,计算得到零件需要修配的配合区域位置信息以及最小修配量,并给出合理的零件修配方案,完成装配过程的在线修配与精准控制。本发明可实现复杂产品装配过程的智能闭环控制,对降低装配过程中试装、修配的时间,提高装配精度和效率有着重要的工程意义。 【EN】The invention discloses a precise repairing and matching method and an operation system thereof for a complex product assembling process based on digital twinning, aiming at key processes in the product assembling process, actual measurement data acquisition and processing are carried out on a part assembling matching area, the actual measurement data and an ideal model are subjected to deep fusion, and a part digital twinning model is constructed; solving and updating the part assembly positioning constraint by combining the planned assembly sequence to obtain a product digital twin model; the product digital twin model is used in pre-assembly simulation analysis, and according to the assembly simulation analysis result and the assembly collision interference check condition, the position information and the minimum repair amount of the matching area of the part to be repaired are calculated and obtained, a reasonable part repair scheme is given, and the online repair and accurate control of the assembly process are completed. The invention can realize intelligent closed-loop control of the assembly process of complex products, and has important engineering significance for reducing the trial assembly and repair time in the assembly process and improving the assembly precision and efficiency.
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申请号:202010044891.6 公开号:CN111274685A 主分类号:G06F30/20
申请人:【中文】东南大学【EN】SOUTHEAST University 申请日:2020.01.16 公开日:2020.06.12
摘要:【中文】本发明涉及一种微组装三维工艺快速设计系统,该系统由微组装工艺数据库、工艺快速设计与仿真优化子系统以及工艺文件快速输出子系统集成;微组装工艺数据库包括元器件三维模型库、产品BOM库、元器件信息库、典型工艺库以及方案规则库组成;工艺快速设计与仿真优化子系统包括工艺结构树快速生成模块、辅助工艺节点信息快速添加模块、关键工艺活动信息自动生成模块以及关键工艺仿真优化模块;工艺文件快速输出子系统包括二维工艺文件输出模块以及三维仿真动画输出模块。本发明基于微组装工艺数据库的数据支撑,实现微组装工艺的快速设计与仿真优化,输出二维工艺文件和三维仿真动画,提高微组装工艺设计效率,降低生产过程的出错率。 【EN】The invention relates to a micro-assembly three-dimensional process rapid design system, which is integrated by a micro-assembly process database, a process rapid design and simulation optimization subsystem and a process file rapid output subsystem; the micro-assembly process database comprises a component three-dimensional model library, a product BOM library, a component information library, a typical process library and a scheme rule library; the process rapid design and simulation optimization subsystem comprises a process structure tree rapid generation module, an auxiliary process node information rapid addition module, a key process activity information automatic generation module and a key process simulation optimization module; the process file rapid output subsystem comprises a two-dimensional process file output module and a three-dimensional simulation animation output module. The method is based on the data support of the micro-assembly process database, realizes the rapid design and simulation optimization of the micro-assembly process, outputs two-dimensional process files and three-dimensional simulation animations, improves the design efficiency of the micro-assembly process, and reduces the error rate in the production process.
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申请号:201911016897.6 公开号:CN110928716A 主分类号:G06F11/07
申请人:【中文】江苏苏宁物流有限公司【EN】Jiangsu Suning Logistics Co., Ltd. 申请日:2019.10.24 公开日:2020.03.27
摘要:【中文】本发明公开一种调度任务异常处理方法及装置,涉及业务支撑技术领域,能够在提升异常调度任务处理效率的同时,减轻维护人员的工作量。该方法包括:根据异常调度任务的类别预先构建业务异常表模板以及系统异常表模板;监控异常调度数据,将业务异常数据导入业务异常表模板生成业务异常任务,和/或,将系统异常数据导入系统异常表模板生成系统异常任务;基于业务异常任务从业务方案库中调取对应的业务异常处理方案进行异常处理操作,和/或,基于系统异常任务从系统方案库中调取对应的系统异常处理方案进行异常处理操作。该装置应用有上述方案所提的方法。 【EN】The invention discloses a scheduling task exception handling method and device, relates to the technical field of business support, and can reduce the workload of maintenance personnel while improving the exception scheduling task handling efficiency. The method comprises the following steps: a service exception table template and a system exception table template are constructed in advance according to the type of the exception scheduling task; monitoring abnormal scheduling data, importing the abnormal service data into a abnormal service table template to generate an abnormal service task, and/or importing the abnormal system data into an abnormal system table template to generate an abnormal system task; and calling a corresponding service exception handling scheme from the service scheme library based on the service exception task to perform exception handling operation, and/or calling a corresponding system exception handling scheme from the system scheme library based on the system exception task to perform exception handling operation. The device is applied with the method provided by the scheme.
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申请号:201911197664.0 公开号:CN110995880A 主分类号:H04L29/12
申请人:【中文】北京工业大学【EN】Beijing University of Technology 申请日:2019.11.29 公开日:2020.04.10
摘要:【中文】本发明公开一种DNS服务质量评价方法,包括以下步骤:(1)采集与DNS服务器相关联的网络指标同时构建DNS连接地图并标注性能标签;(2)采集与DNS服务器相关联的传输指标同时构建节点关联图谱;(3)过滤器对连接地图与关联图谱进行相应过滤(4)采集与DNS服务器相关联的用户指标;(5)评价器在经过过滤的采集数据基础上综合所采集的用户指标计算DNS服务器服务质量的综合值。通过DNS服务质量评价方法可以对DNS服务器的服务质量进行相对真实的服务质量计量。 【EN】The invention discloses a DNS service quality evaluation method, which comprises the following steps: (1) collecting network indexes associated with a DNS server, constructing a DNS connection map and marking a performance label; (2) collecting transmission indexes associated with a DNS (domain name system) server and constructing a node association map; (3) the filter correspondingly filters the connection map and the associated map (4) and collects user indexes associated with the DNS server; (5) the evaluator synthesizes the collected user indexes on the basis of the filtered collected data to calculate a comprehensive value of the service quality of the DNS server. The DNS service quality evaluation method can be used for carrying out relatively real service quality measurement on the service quality of the DNS server.
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申请号:201911229648.5 公开号:CN111161437A 主分类号:G07B17/00
申请人:【中文】江苏苏宁物流有限公司【EN】JIANGSU SUNING LOGISTICS Co.,Ltd. 申请日:2019.12.04 公开日:2020.05.15
摘要:【中文】本发明公开了一种物流箱码的通用接收订阅派发方法及系统,采用通用箱码数据结构存储各箱码作业状态数据,完成箱码接收、箱码订阅和箱码下发;其中,箱码接收:利用基于无锁队列的算法削峰,使队列中的箱码信息插入数据库;箱码订阅:利用groovy表达式,将箱码的属性作为维度实现箱码的订阅;箱码下发:利用基于无锁队列的算法削峰并使队列中的箱码信息平滑下发。本发明实现了高并发环境下流畅的接收/派发物流箱码信息、箱码状态等信息。 【EN】The invention discloses a general receiving, subscribing and distributing method and a general receiving, subscribing and distributing system for logistics box codes.A general box code data structure is adopted to store operation state data of each box code, and box code receiving, box code subscribing and box code issuing are completed; wherein, the case sign indicating number is received: inserting the box code information in the queue into a database by using the algorithm peak clipping based on the lock-free queue; and (3) subscribing the box code: using groovy expression to realize the subscription of the box code by taking the attribute of the box code as dimension; and (3) issuing a box code: and (4) clipping peaks by using an algorithm based on a lock-free queue and smoothly transmitting box code information in the queue. The invention realizes smooth receiving/distributing of information such as logistics box code information, box code state and the like in a high concurrency environment.
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申请号:201911197916.X 公开号:CN110912749A 主分类号:H04L12/24
申请人:【中文】北京工业大学【EN】Beijing University of Technology 申请日:2019.11.29 公开日:2020.03.24
摘要:【中文】本发明公开一种针对DNS数据预测的方法,所述方法包括以下步骤:(1)利用采集器等工具对DNS服务器的日志数据进行收集;(2)对采集的数据根据其特征值进行预处理;(3)根据相似度把采集的数据进行降维处理;(4)把低维空间的数据进行分类;(5)对分类过后的低维数据使用回归进行预测;(6)收集预测结果分析走向。通过对DNS服务器中查询日志信息进行提取与处理,从而可以对网络流量以及网站安全做出预测。 【EN】The invention discloses a method for predicting DNS data, which comprises the following steps: (1) collecting log data of the DNS by using tools such as a collector and the like; (2) preprocessing the acquired data according to the characteristic value of the acquired data; (3) performing dimensionality reduction on the acquired data according to the similarity; (4) classifying the data of the low-dimensional space; (5) predicting the classified low-dimensional data by using regression; (6) collecting the prediction results and analyzing trends. By extracting and processing the query log information in the DNS, the network traffic and the website security can be predicted.
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申请号:201911406518.4 公开号:CN111221854A 主分类号:G06F16/2453
摘要:【中文】本发明公开一种面向Handle标识解析的智能选路方法,针对递归节点现有Handle标识解析系统在面临GHR/LHS的site部署在不同地理位置情况下接收标识查询请求响应的问题进行改进,通过一定的奖励惩罚措施,分别使得递归节点访问国家顶级节点/行业二级节点/企业节点不同site时延最短,从而达到递归节点整体响应客户端的查询更快速,提高解析服务质量的目的。 【EN】The invention discloses an intelligent routing method for Handle identification analysis, which is improved aiming at the problem that the existing Handle identification analysis system of a recursive node receives identification query request response under the condition that the site of GHR/LHS is deployed at different geographic positions, and respectively leads the time delay of the recursive node for accessing different sites of national top level nodes/industry secondary nodes/enterprise nodes to be shortest through certain reward punishment measures, thereby achieving the purposes of quicker response of the recursive node to the query of a client and improvement of the quality of analysis service.
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申请号:201911257022.5 公开号:CN111130928A 主分类号:H04L12/26
摘要:【中文】本发明公开了广域网中基于带内探测的网络测量方法,包括以下步骤:步骤一,基于INT In‑band Network Telemetry协议,集中式控制器统一规划并定义探测包转发的路径,向广域网接入点交换机按定义的路径发送探测包;步骤二,获取路径状态信息,即广域网转发设备对链路信息进行实时采样,插入探测包内,并基于组播的方式进行转发;步骤三,对采样的链路信息进行汇总,完成路径信息的测量,反馈路径信息;步骤四,基于分布式与集中式相结合的信息收集分析方式判断端到端路径的拥塞情况。本发明方法以现有标准INT为基础,通过将其与分布式主动测量相结合使得广域网接入点主动向网络内发送探测包,并通过快慢两套反馈机制实现路径信息的同步,降低控制器开销。 【EN】The invention discloses a network measurement method based on in-band detection in a wide area network, which comprises the following steps: step one, based on an INT In-band Network telecom measuring protocol, a centralized controller uniformly plans and defines a path for forwarding a detection packet, and sends the detection packet to a wide area Network access point switch according to the defined path; step two, acquiring path state information, namely, sampling the link information in real time by the wide area network forwarding equipment, inserting the link information into a detection packet, and forwarding the link information based on a multicast mode; step three, summarizing the sampled link information, completing the measurement of the path information, and feeding back the path information; and step four, judging the congestion condition of the end-to-end path based on an information collection and analysis mode combining distributed mode and centralized mode. The method of the invention is based on the existing standard INT, the wide area network access point actively sends the detection packet to the network by combining the INT with the distributed active measurement, and the synchronization of the path information is realized by two sets of feedback mechanisms, namely speed and speed, thereby reducing the expense of the controller.
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