49 results about "Solid modelling" patented technology

The invention discloses a five-axis numerical control machining simulation-oriented tool swept volume entity modeling method, which comprises the following steps of: firstly, describing a tool shaft section contour line by adopting a rotation contour point, and constructing a tool rotation body model through connection of a tool layer and a triangular surface; secondly, a calculation method of a cutter axis point velocity vector is provided by classifying cutter movement tracks in machining; secondly, calculating a normal vector of a point on the cutter layer, and solving a critical contour point and a reserved point of the cutter layer by combining an envelope theory; then, a construction method of a tool swept volume surface contour point set is researched, and a closed triangular mesh surface of the swept volume is constructed by using a contour point sequence number corresponding relation; finally, the effectiveness of the algorithm is verified through a tool swept volume generation result under various motion trails. The method is suitable for various cutter types, and can meet the requirements of numerical control machining simulation.

The invention relates to the technical field of deduction engines, in particular to a distributed joint combat deduction engine architecture based on multi-agent reinforcement learning, which comprises a data processing layer capable of acquiring target area environment data, entity historical state data and trust data, target area environment data and entity historical state data are processed through a distributed computing framework, and original trust vectors are generated through trust data; the simulation engine layer can perform environment modeling and entity modeling through an entity modeling engine and an environment simulation engine; carrying out credibility dynamic modeling based on the historical behaviors of the intelligent agent; the joint command layer can coordinate and dispatch a target environment entity and environment resources through a coordination engine according to a preset command scheme, and performs cross-domain trust conduction; and the analysis and evaluation layer can deduce and restore in real time, predict the situation of the target area and evaluate the robustness of the command scheme.

The invention discloses a point cloud dynamic three-dimensional reconstruction method based on greedy projection triangle reconstruction. The method comprises the following steps: S1, obtaining three-dimensional laser point cloud data in a tunneling roadway through a laser scanning technology; s2, loading the acquired three-dimensional laser point cloud data, and removing zero three-dimensional laser point cloud data or three-dimensional laser point cloud data with an incorrect format; s3, carrying out preprocessing operation on the three-dimensional laser point cloud data; s4, performing gridding processing, restoring a spatial topological structure between points in the three-dimensional laser point cloud data, and performing greedy projection triangle reconstruction by using optimization parameters to generate triangular mesh data; and S5, displaying and storing the roadway three-dimensional model according to the triangular mesh data. According to the method, efficient and complete three-dimensional modeling is carried out according to the point cloud data obtained after acquisition and processing, modeling trueness of entities such as coal walls without drawings, with various details and with dynamic changes is high, and the development requirements of digital transformation in the coal mine industry for the digital twinning technology are met.

The present invention discloses a modeling method for a non-rotational airborne radar radome, comprising: performing surface configuration and solid modeling on the non-rotational surface airborne radar radome to obtain a reconstructed digital model of the non-rotational airborne radar radome; and generating a frequency selective surface of the non-rotational airborne radar radome based on the digital model of the non-rotational airborne radar radome. The present invention realizes the precise creation of the digital model of the non-rotational airborne radar radome, so that the finally designed radome product can achieve the initially designed electrical performance index in the actual application environment.

The invention relates to the technical field of industrial automation and digital twinning crossing, and discloses a production line debugging method and system.The method comprises the following steps that three-dimensional modeling software is used for conducting modeling on a production line physical entity to generate a production line three-dimensional model, and the production line three-dimensional model is imported into three-dimensional processing software; the three-dimensional processing software performs format conversion on the production line three-dimensional model and then imports the production line three-dimensional model into the three-dimensional engine software, the three-dimensional engine software generates a three-dimensional engine based on the production line three-dimensional model subjected to format conversion, and the conversion control layer controls a production line physical entity to act by utilizing the three-dimensional engine. The problems of long debugging time and the like in the prior art are solved.

The invention belongs to the technical field of numerical simulation, and particularly relates to a flow field distribution numerical simulation method based on a simplified modeling strategy, compared with a traditional method, solid modeling is replaced by a porous medium model, geometric construction of a solid area in a computational domain is greatly simplified, structured grids can be adopted, and the flow field distribution numerical simulation method based on the simplified modeling strategy is achieved. The solution precision and the calculation efficiency are improved, and an efficient and accurate solution is provided for numerical simulation in engineering application.

The application relates to the technical field of knowledge engineering, and discloses a production and manufacturing digital twin modeling method based on a knowledge graph, which comprises the following steps: performing data fusion and model construction on original multi-source data, obtaining multi-source fusion data, and generating a digital twin architecture; performing ontological design and semantic modeling on the multi-source fusion data, and generating a manufacturing knowledge graph; wherein the manufacturing knowledge graph is represented by triplets, and the triplets comprise entities-relation-entities / attributes; performing entity modeling on the manufacturing knowledge graph, and obtaining a knowledge-driven geometric model; and performing reasoning based on the manufacturing knowledge graph and historical data, and obtaining a knowledge-driven decision model. The method can construct a digital twin model with knowledge-driven prediction and decision-making capabilities, and provides a high-robustness and sustainable-evolution digital twin modeling method for intelligent manufacturing, smart factories and other fields. The application also discloses a production and manufacturing digital twin modeling device based on the knowledge graph and an electronic device.

The application discloses a kind of roadbed pavement entity model dynamic creation methods for multi-graph platform, comprising: the analysis of route design data;Roadbed pavement component cross section template making;The distribution information setting of each component of roadbed pavement;The template setting of each component of roadbed pavement;The basic modeling data calculation and processing of each minimum component of roadbed pavement;Model creation based on certain graphic platform.The application can realize the roadbed pavement entity modeling under different graphic platforms, by component cross section template and component distribution information, combined with route design data, calculate the actual modeling data of component and save, complete model creation under the support of the general modeling method of different graphic platforms with actual modeling data, effectively create roadbed pavement entity model and meet design intent, innovatively decouple modeling process and graphic platform, calculate and save modeling data separately to be called by different graphic platforms, realize the modeling achievement of multiple data formats.

A twisted modeling three-dimensional entity modeling method, device, medium and electronic equipment, the method comprises: acquiring modeling parameters of a twisted surface, the modeling parameters comprising a twist reference surface, a twist axis and a twist angle; sampling the twist axis to obtain a plurality of sampling points of the twist axis in its parameter interval; calculating the normal plane of the twist axis curve at each sampling point to obtain a set of normal planes, and extracting each corresponding parameter curve on the twist reference surface according to the calculated set of normal planes; twisting and deforming fitting each extracted parameter curve according to the twist angle to obtain a plurality of fitted curves; performing twisted surface fitting according to each fitted curve to obtain a twisted surface; generating a regular surface according to the contour line of the twisted surface, and generating a twisted modeling three-dimensional entity model by topological suturing algorithm of the regular surface and the twisted surface.

The invention discloses a method for constructing a parameterized entity model of a mine roadway, which is applied to the technical field of intelligent construction and three-dimensional modeling of mine engineering. Comprising the following steps: acquiring modeling data for mine roadway entity modeling; configuring automatic modeling parameters of the modeling data; preprocessing the modeling data, wherein the preprocessing comprises coordinate transformation and roadway splitting; and performing automatic construction of roadway entity modeling based on the preprocessed modeling data. According to the method, the problems of difficulty in multi-source data fusion, adjustment of visual attributes, long model updating period, high cost and the like of traditional roadway modeling are solved, the method can be applied to the technical field of mine engineering digital design and three-dimensional modeling, and a remarkable effect is achieved in intelligent mine construction.

The utility model discloses an operating platform for BIM (Building Information Modeling), which belongs to the field of operating platforms and is characterized in that an open collecting bin is arranged at the upper end of a collecting box, and solid modeling materials are stored through the open collecting bin; a lighting system mounting bin is formed in the entity modeling table, mounting hole positions are formed in the upper end and the lower end of the entity modeling table, a lighting system controller is mounted on the inner wall of the collecting box, and a lighting system in the lighting system mounting bin is controlled through the lighting system controller so that lighting of entity modeling objects on the surface of the entity modeling table can be achieved. And the modeling computer is fixed at the upper end of the table body, so that an operator can conveniently and efficiently carry out BIM modeling. Seamless connection of virtuality and entity modeling is achieved through the entity modeling table design, and the working efficiency is improved. And the lighting system in the platform and the controller provide sufficient illumination for modeling, so that the modeling precision can be improved. The design of the collecting box facilitates storage and management of modeling materials, convenient control is achieved through an inner wall lighting system controller, and operation convenience and flexibility are improved.

In order to reduce the complexity of underground cavern engineering modeling and improve the modeling efficiency, the invention provides an underground cavern engineering design and analysis integrated CAE modeling method, which has the core that a cavern excavation body, a cavern area mountain and a surrounding rock supporting structure model are obtained from a cavern engineering 3DE design result; an established 3DE underground cavern excavation support modeling pretreatment program drives 3DE to complete cavern step-by-step excavation support entity modeling according to a cavern layered excavation and support design scheme, outputs a key modeling information file, drives Gmsh to reproduce an entity modeling process in 3DE by using the file, and performs mesh generation on a volume entity on the basis, so as to obtain an underground cavern excavation support modeling model. And naming according to the volume entity number in the modeling key information file, and finally outputting a model grid file, so that the underground cave group three-dimensional design result is directly used for carrying out cave group step-by-step excavation support numerical simulation modeling and model grid automatic subdivision.

The application relates to a multi-source heterogeneous offline data processing method, system, device and medium. The method reduces manual operation and reduces system development difficulty based on a visual interface configuration. Zero-code development is realized by adopting a DAG plug-in data table configuration, and flexibility is increased by dynamically arranging table relationships. A data table entity modeling model is designed to perform feature modeling on data tables in integrated plug-ins. A multi-source type table building statement template is designed to reduce manual coding, unify data source connections and increase system expansibility. A multi-source table building instance construction process is designed to automatically construct target table building statements. A multi-source type target table creation process is designed to autonomously complete efficient target table creation operations. Finally, data integration is realized in multiple links through offline data table processing, and the offline data processing complexity of multi-source heterogeneous type data tables is greatly reduced.

The present application belongs to the technical field of continuous casting, and particularly relates to a method for numerical simulation of flow field distribution of a continuous casting tundish. Compared with a traditional method, the present application replaces entity modeling with a porous medium model, greatly simplifies the geometric construction of the solid region inside the calculation domain of the continuous casting tundish, enables the use of a structured grid, improves the solving precision and calculation efficiency, and provides an efficient and accurate solution for the numerical simulation of the continuous casting tundish.

The present invention provides a method and system for intelligent processing control of a milling machine, which includes the following steps: modeling the tool, fixture and workpiece entities in the machine tool processing environment as dynamic graph structure nodes; updating the weights of the dynamic graph structure edges based on the characteristic changes of the data nodes; establishing a hypergraph model of multiple physical fields with each data node as a supernode; performing modal analysis on the hypergraph model to extract the thermal expansion coefficient matrix and the vibration modal matrix, and generating a homogeneous transformation matrix; adjusting the tool parameters based on the attitude error parameters and translation error parameters obtained from the homogeneous transformation matrix. The multi-physical field hypergraph model is constructed by connecting the supernodes with hyperedges, quantifying the coupling strength of the thermal field, stress field and vibration field with dynamic weights, capturing the phase coupling effect of thermal expansion and vibration acceleration, adjusting the tool compensation parameters, and improving the processing accuracy.

The application discloses a kind of fast strength analysis methods applied to rotor of axial flow type rotating machinery, S1, establishes rotor entity model;S2, carries out strength analysis to rotor entity model, wherein rotor disc has the geometric feature of n to be reserved, one is reserved and is taken as center to the rotor entity model along the circumferential 360° / n range sector domain of cutting, two circumferential sides of calculation domain are set periodic boundary condition;S3, finite element model is established to sector domain, corresponding load is applied with actual working condition, deformation and stress field result are obtained, and then strength analysis result is obtained.It can save the calculation time most under the premise of guaranteeing the accuracy of calculation, improve analysis efficiency, simplify the arrangement of entity modeling and finite element modeling, reduce the time of calculation and analysis;The detailed component structure of fault area is reserved, the necessary geometric feature is restored, and more accurate strength analysis result of fault component is obtained.

This invention discloses a non-inertial navigation mobile indoor volume measurement and 3D reconstruction method, equipment, and computer-readable medium, belonging to the interdisciplinary field of precision engineering measurement, computer vision, and digital twin technology. The method includes the following steps: S1, dynamic scanning data acquisition; S2, adaptive data augmentation and cleaning; S3, trajectory and depth calculation based on motion continuity constraints; S4, cross-sectional topology construction and closure constraints; S5, 3D solid modeling preserving volume characteristics; and S6, precise volume calculation based on the solid model. This invention employs the aforementioned non-inertial navigation mobile indoor volume measurement and 3D reconstruction method, equipment, and computer-readable medium, and through a single-line 2D LiDAR combined with innovative algorithms, achieves mobile high-precision volume measurement and high-fidelity 3D reconstruction of irregular indoor spaces under low-cost hardware conditions.

The invention discloses a data-driven and rule-fused power transmission and transformation equipment parameterized modeling method and device, a medium and equipment, and the method comprises the steps: analyzing an imported CAD model file of power transmission and transformation equipment, extracting geometric features, and constructing the geometric features into a multi-dimensional feature vector; based on the multi-dimensional feature vectors, a mixed mode of combining an intelligent classification algorithm and a rule base is adopted, and the mapping relation between the geometric parameters and the equipment structure components is established; based on the mapping relationship, summarizing and verifying the geometric parameters, and generating a standardized equipment parameter table; and according to the equipment parameter table, generating a parameterized modeling script to drive entity modeling of the power transmission and transformation equipment.

A technique is disclosed to implement a mathematical framework for modeling mechanical actuators (e.g., robotic arms) and to compute the differential kinematics of an end effector represented by a circle in three-dimensional space, which is described as a double vector of conformal geometric algebra. Furthermore, by using a circle to describe the grasping posture on an object, a differential kinematics-based control scheme is implemented to guide the actuator and minimize the error between the end effector circle and the target circle. The circle has three degrees of freedom about the center, two degrees of freedom about the orientation, and one additional degree of freedom about the radius, which can be used to describe the posture of the end effector and simultaneously adjust the position and orientation using a differential kinematics-based control scheme law.

The application discloses a kind of general artificial intelligence systems based on EGS structure, including basic layer, core modeling layer, core fusion layer, core execution layer, feedback optimization layer and evolution discovery layer, based on sparse optimization and variational method, physical information neural network and model-data double-driven framework improvement.Basic layer realizes EGS labeling and sparse optimization preprocessing;Core modeling layer carries out five-dimensional entity modeling, six-class rule modeling and four-layer constraint modeling;Core fusion layer completes the triple fusion of general intelligence-cross-domain adaptation-causal logic;Core execution layer realizes structured execution and full-link verification;Feedback optimization layer carries out double-time-scale dynamic optimization;Evolution discovery layer realizes sample-independent generalization rule extraction and controllable emergence screening.The system in the application can be extrapolated to unknown fields following the same physical laws, with improved accuracy in few-sample tasks, enabling zero-sample cross-domain reasoning, and can be widely applied in intelligent production, scientific research and innovation.

The present invention provides a tunnel blasting method based on intelligent identification of surface cracks and internal rock properties. The specific steps include: S1: performing three-dimensional laser scanning on the tunnel face to obtain point cloud data, and solid modeling based on the processed point cloud data; S2: identifying the joints on the face based on the solid modeling, and using a numerical calculation program to perform numerical calculation and analysis on double-hole blasting of rock at different joint angles to obtain numerical simulation results of the crushing zone; S3: based on the numerical simulation results of the crushing zone, designing the tunnel blasthole parameters and blasthole layout, drilling, obtaining the blastholes to be blasted, and recording the blasthole data; S4: storing the blasthole data in a lithology parameter database, and performing three-dimensional solid modeling of the rock mass for the blastholes to be blasted; S5: calculating the charge amount for the blastholes to be blasted, and blasting the tunnel. By combining surface cracks and internal rock properties in the blasting method, the present invention provides a specialized blasting plan based on the face information.

The invention belongs to the technical field of continuous casting, and particularly relates to a numerical simulation method for flow field distribution of a continuous casting tundish, compared with a traditional method, solid modeling is replaced by a porous medium model, geometric construction of a solid area in a continuous casting tundish computational domain is greatly simplified, structured grids can be adopted, and the flow field distribution of the continuous casting tundish can be simulated. The solution precision and the calculation efficiency are improved, and an efficient and accurate solution is provided for numerical simulation of the continuous casting tundish.

The present invention provides a small-sample knowledge graph completion method based on embedding fusion and data enhancement, which belongs to the field of knowledge graph completion. The present invention designs an attention multi-hop neighborhood modeler and a task-side entity modeler to establish the embedding of entities in the background knowledge graph and task relations. At the same time, a support set enhancement module is introduced to project the relations into a high-dimensional space, extract relevant relations from the background knowledge graph to supplement the support set, and control the quality of the extracted entities through a gating mechanism. Through a triple encoder architecture with bilateral fusion representation, the attention entity prototype and the entity task-side semantic information are integrated to generate an accurate embedding representation. Experimental results show that the present invention outperforms existing methods on multiple benchmark datasets, effectively improving the accuracy and efficiency of small-sample knowledge graph completion.

The present application relates to the technical field of commodity atlas, specifically to a multi-modal data driven commodity atlas construction method and system and electronic equipment, comprising the following steps: obtaining an incomplete modal structure node image, extracting boundary features to generate a feature set after foreground segmentation, judging co-reference conflicts according to a structure field mapping image area, generating a label item, filling and evaluating the existence rate of a field by statistics, generating a reinforcement node list, constructing a topological connection according to a template, and generating a scheduling instruction set. The present application extracts structure parameters and aggregates boundary features of the foreground area of a commodity image, generates co-reference conflict labels in the case of matching abnormalities or multiple field overlaps, guides fine splitting of the class target label based on regional statistical indicators, discriminates field vacancy nodes by calculating the field existence rate and the standard deviation coefficient and adds them to the reinforcement queue, improves the field coverage and structure integrity in the atlas, and improves the semantic accuracy and entity modeling quality of the commodity atlas.

The invention aims to provide a UG-based axial flow compressor blade three-dimensional modeling method, and belongs to the field of turbomachinery. The method comprises the steps that firstly, blade grid molded line data points are imported into UG software, and editable blade grid molded line data points are obtained; secondly, sequentially editing blade grid molded line data points of each section, drawing a leading edge / trailing edge small circle, checking the blade grid molded line data points, bridging a suction surface / pressure surface spline curve with the leading edge / trailing edge small circle, adjusting a curvature comb of the bridging curve, connecting the suction surface / pressure surface spline curve with the leading edge / trailing edge small circle, and trimming the leading edge / trailing edge small circle; checking whether a suction surface / pressure surface molded line is intersected and tangent with a leading edge / trailing edge small circle or not; constructing a three-dimensional blade body entity by the edited blade grid molded lines of the sections in a curve group form; and finally completing three-dimensional solid modeling of the blade. According to the method, the fairing requirement of the blade profile is met, the fairing requirement of the blade body is also met, the requirement of numerical calculation is met, and the requirement of machining is also met.

The invention discloses a multi-graphic platform-oriented roadbed and pavement entity model dynamic creation method. The method comprises the following steps of: analyzing route design data; manufacturing a section template of the roadbed and pavement component; setting distribution information of each component of the roadbed pavement; setting templates of the components of the roadbed and the pavement; calculating and processing basic modeling data of each minimum component of the roadbed and the pavement; and creating a model based on a certain graphic platform. According to the method, roadbed and pavement solid modeling under different graphic platforms can be realized, the actual modeling data of the component is calculated and stored through the component section template and the component distribution information in combination with the route design data, model creation is completed by the actual modeling data under the support of a general modeling method of different graphic platforms, and the modeling efficiency is improved. According to the method, a roadbed and pavement entity model is effectively created, the design intention is met, the modeling process is innovatively decoupled from a graphic platform, modeling data is independently calculated and stored for calling of different graphic platforms, and a modeling result in multiple data formats is achieved.

The application provides a visual simulation system, method and medium in a multi-domain confrontation environment, the system comprises: a scenario generation module, which is used for converting confrontation environment parameters input by a user into a structured scene data packet; an entity modeling module, which is used for modeling according to physical properties and behavior logic of an entity, obtaining an entity model, and providing a cross-domain interaction interface, so that different domain entities are coordinated; a simulation engine module, which is used for determining an event queue and an environment state according to the scene data packet, and processing entity events according to event priorities in the event queue, and then synchronously updating corresponding entity states and environment states; and a visual simulation module, which is used for performing three-dimensional rendering according to a data stream provided by the simulation engine module, and obtaining a three-dimensional picture reflecting the entity states and the environment states. The simulation logic is closely coupled with user interaction through a low-delay data synchronization mechanism, and the simulation efficiency and reliability are improved.

The invention discloses a carbon-source-sink spatio-temporal dynamic knowledge graph construction method and system, a terminal and a storage medium, and the method comprises the steps: obtaining multi-source sensing data, and carrying out the preprocessing of the multi-source sensing data, and obtaining the preprocessed multi-source sensing data; performing entity modeling processing on the preprocessed multi-source sensing data to obtain a carbon source sink entity, and performing feature modeling processing and relation modeling processing on the carbon source sink entity to obtain a carbon source sink entity feature and a carbon source sink entity relation; performing atlas mapping processing on the carbon source sink entity characteristics and the carbon source sink entity relationship to obtain atlas nodes and atlas edges, and constructing an atlas substructure according to the carbon source sink entity, the atlas nodes and the atlas edges; and storing and updating the graph substructure to obtain the carbon source sink space-time dynamic knowledge graph. According to the method, the carbon source sink space-time dynamic knowledge graph is constructed by obtaining the entity characteristics and the entity relationship of the carbon source sink and carrying out dynamic storage updating, so that the estimation precision of the carbon source sink can be effectively improved.

The present invention relates to a thermal stress simulation method during the tempering process of ultra-thin glass, comprising the following steps: S1, creating an ultra-thin glass plate tempering model, selecting a group of ultra-thin glass plates with vertical jets as stress simulation objects, establishing a calculation domain for the ultra-thin glass, wherein the calculation domain includes a flow field region inside a nozzle, a flow field region at the interface between the nozzle and the glass plate, and a solid field region of the glass plate; S2, defining material properties, discretizing the model into a grid model after solid modeling, first defining the elastic modulus E and Poisson's ratio μ of the glass by defining unit properties and grid generation control, then setting the flow field material to air, and setting the changes of the thermophysical parameters of the glass with temperature; providing accurate numerical values for the thermal stress simulation of the ultra-thin tempered glass, improving the accuracy of the stress simulation results, selecting a suitable glass quenching optimization scheme from the scheme, and providing a scheme for further research in the future.

The invention provides a scene construction method and device for antenna same-address interference simulation evaluation, and the method comprises the steps: S1, obtaining and processing high-precision geographic data which comprises remote sensing image data, DEM data, vector map data, three-dimensional city model data and oblique photography data; s2, terrain grid generation and three-dimensional solid modeling are carried out; s3, scene instance configuration and scene instance editing: the scene instance configuration is to arrange an antenna instance and an obstacle instance on the basic scene model, select a propagation model for the antenna instance and set parameter information of the antenna instance; and S4, scene data storage and management, specifically including database and file mixed storage, scene loading and scene output. The design accuracy and reliability are improved, and the accuracy and reliability of the antenna simulation design are greatly improved through the geographic scene and the three-dimensional map in combination with the classic propagation model.