27 results about "Solid modelling" patented technology

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 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.

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.

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 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 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 application provides an aviation metal braided wire point cloud data entity modeling method based on cell erosion, relates to the technical field of metal corrosion numerical simulation analysis, and comprises the following steps: S1, a three-dimensional cell space simulating the corrosion environment of an aviation metal braided wire is established; S2, simulation modeling of the corrosion process of the aviation metal braided wire is performed; S3, an aviation metal braided wire cell three-dimensional space point cloud equation is constructed, and an aviation metal braided wire grid unit is generated; and S4, the aviation metal braided wire tetrahedral grid unit is spliced to generate a smooth curved surface, and the aviation metal braided wire point cloud data entity modeling is completed. The aviation metal braided wire three-dimensional discrete points generated in the cellular automaton can be converted into an entity in the finite element simulation software, the complex aviation metal braided wire surface topography is retained, and the simulation-to-physical model conversion process is optimized.

The invention discloses an underground pipe network full life cycle data intelligent management method and system, and relates to the data management related technical field, and the method comprises the steps: building a BIM-GIS fusion model; entity extraction is carried out, and multi-dimensional entity modeling is executed; performing entity alignment and fusion on the multi-dimensional entities, performing association analysis, and establishing an association knowledge graph; receiving data streams from design, construction, monitoring and inspection, and carrying out data time sequence mounting and updating through a dynamic attribute mapping engine; analyzing and configuring a retrieval template for the retrieval request based on semantic analysis; and executing multi-scale sliding window analysis of the candidate object set, and outputting an update result. The technical problems of data islanding, information staticization, management fragmentation and insufficient retrieval analysis capability in the prior art are solved, and the technical effects of realizing full-life-cycle data fusion, dynamic real-time perception, cross-entity association analysis and intelligent and accurate retrieval, and improving the safety and operation and maintenance management efficiency of the underground pipe network are achieved.

The invention discloses a refined modeling method and device for a designed tenon structure based on mapping coordinates, and belongs to the technical field of modeling of a tenon structure of a composite fan blade, and the method comprises the steps: carrying out the initial filling of a laying layer, obtaining an initial filling image of the laying layer, and enabling the out-of-plane direction of a sample image to be parallel to the thickness direction of the laying layer structure; laying layer sequence adjustment, laying layer morphology drawing and plane laying layer drawing are carried out in sequence; and finally, carrying out three-dimensional solid modeling on the tenon structure. According to the method, automatic plane laying layer drawing is achieved, manual intervention is not needed, the workload is greatly reduced, and the influence of human factors on the modeling result is avoided.

A kind of discretization method suitable for complex computational domain of lattice discrete particle model, including 1, concrete component three-dimensional entity modeling;2, round spherical concrete aggregate particle generation;3, on the surface and inside three-dimensional entity randomly throw aggregate particle;4, aggregate inclusion generation.The present application introduces three-dimensional entity modeling before aggregate particle generation and throwing, so that LDPM pre-processing method is more complete, in entity modeling stage, various shapes of entity model can be generated by the establishment, transformation and assembly of parts, so that the pre-processing method can process various shapes of concrete test piece, so that it is more flexible and versatility;The uniformity of aggregate particle size distribution and spatial distribution is improved, so that aggregate particle model is close to real concrete material;Delaunay tetrahedron and each face thereon are marked, so that the pre-processing method has the ability to process complex geometric feature concave entity with notch, with hollow and the like.

The invention provides a construction method of a digital twinborn model of a vehicle health management system based on digital twinborn. The system comprises a system architecture and the digital twinborn model. The system architecture comprises a physical space, a digital twin space and a man-machine interaction space. The physical space collects vehicle and traffic physical data through the sensing network, and provides basic data support for an upper layer through the transmission of the Internet of Vehicles cloud platform, thereby achieving the perception and control of vehicles in the traffic network. The digital twin space comprises a data layer, a simulation layer and a functional layer; the interaction space creates a man-machine interaction interface by using one-dimensional data, a two-dimensional chart and a three-dimensional animation. The method comprises the steps of travel element entity modeling, travel process dynamic modeling, travel process simulation modeling and the like. According to the invention, the problems of data islanding, low prediction precision, high response delay, poor expansibility and the like in a traditional vehicle health management system are solved.

The invention relates to a square parachute modeling simulation method and device, electronic equipment and a storage medium, and belongs to the technical field of computer simulation. The square parachute modeling simulation method comprises the steps that the minimum symmetry area in an unfolding plane graph of a square parachute is determined, dividing into a first region, a second region and a third region based on the minimum symmetric region; the folding height of the square folding umbrella is determined, and a first folding curved surface, a second folding curved surface and a third folding curved surface are determined based on the sizes and the folding heights of the first area, the second area and the third area; and carrying out mirror image copying and circumferential rotation operation on the first folding curved surface, the second folding curved surface and the third folding curved surface, and splicing to obtain a square landing folding model. The folding three-dimensional solid modeling of the square parachute can be realized, and the simulation of the parachute opening process of the real square parachute is more accurate.

This application provides a modular simulation modeling system, method, electronic device, and storage medium, comprising: a model development device for responding to user modeling requirements and generating a model matching the modeling requirements; a component modeling device for responding to user component modeling operations, determining a target component general template corresponding to the component modeling operation from a component general template, and generating a target component based on the target component general template and the model; an entity assembly device for responding to user entity modeling operations, determining a target entity general template corresponding to the entity modeling operation from an entity general template, and generating a target entity based on the target entity general template and the target component; and a distributed deployment device for deploying different models on servers with different computing power according to the model computing power requirements of multiple target models. This application can improve the flexibility and convenience of modeling in different application scenarios and can improve the resource utilization rate of simulation after modeling.

The invention discloses a power transmission tower three-dimensional entity parameterization rapid modeling method, and belongs to the technical field of three-dimensional entity modeling. According to the method, tower main body supporting structure logic is accurately constructed through topological framework extraction, constraint conflicts are efficiently solved by combining framework parameter global optimization, accurate three-dimensional coordinates are output, and it is ensured that the model meets the actual machining requirement through entity generation of the component with tolerance; according to the method, joint plate prototype matching and self-adaptive adjustment (including bolt hole group optimization arrangement) are achieved by means of joint automatic design, matching model compliance verification guarantees that components and joints conform to design specifications, parameterization, automation and high efficiency of three-dimensional solid modeling of the power transmission tower are achieved in the whole process, the modeling precision and efficiency are greatly improved, and the method is suitable for large-scale popularization and application. Manual intervention is reduced, it is ensured that the model has design rationality and engineering practicability, and reliable technical support is provided for design, machining and construction of the transmission tower.

The invention provides a unit fault risk scoring method based on a creative technology stack, and the method comprises the steps: carrying out the data entity modeling, constructing an entity relation model of multi-source heterogeneous data, defining a structured data set, carrying out the recursive automatic construction through aggregation and conversion primitives, generating a high-order candidate feature set, and carrying out the evaluation of a unit fault risk. Learning a causal graph among the features in the high-order candidate feature set based on a microcausal discovery algorithm, generating a causal graph among the features, identifying Markov coverage of a target variable according to the causal graph among the features, screening an effective causal feature subset, constructing an association graph by taking the effective causal feature subset as a node, and aggregating feature interaction information to generate a global fusion feature; dynamically and quantitatively calculating a real-time fault risk score of the computer unit based on the global fusion features; according to the method, the effects of deep utilization of the multi-source data and quantitative sorting of the fault risks are achieved through the creative and creative adaptive process and the continuous differentiated scoring model.

This invention discloses a method for predicting turbine blade flutter. The key point is the coupling of a real physical model of unequilibrium wet steam with the influence coefficient method for predicting flutter in the last-stage long blades of a turbine. This involves solid modeling of the last-stage moving blade, modal analysis, and harmonic response analysis, and constructing a nine-channel fluid domain for influence coefficient method calculations. The extracted main mode shapes are then interpolated onto the CFD nodes of the nine-channel fluid domain using a three-dimensional linear interpolation method. Furthermore, by modifying the wet steam model to accurately characterize the two-phase flow characteristics of the last-stage wet steam, unsteady flow field calculations using the nine-channel influence coefficient method are performed to obtain the aerodynamic damping coefficients for different nodal diameters. This enables the prediction of the flutter stability of the last-stage moving blades and the identification of critical nodal diameters. This significantly reduces the time cost of recalculating the tip phase angle for each blade throughout the entire revolution and improves the physical reliability and reproducibility of the prediction.

This invention discloses a modeling method for special threaded joints that considers roughness. It employs WM fractal functions to describe the contour of the rough surface of the special threaded joint, imports the contour coordinate data of the fractal curves into ANSYS finite element analysis software, and constructs a three-dimensional solid model of the special threaded joint containing the rough fractal contour. This invention also discloses a method for verifying the effectiveness of the above three-dimensional model. Using ANSYS finite element analysis software, material and interface properties are defined, the three-dimensional model is meshed and refined, assembly properties are defined, loads and constraints are applied according to boundary conditions, and structural nonlinear static analysis is performed to obtain equivalent stress contour maps and contact pressure curves of the special threaded joint, thereby verifying the model's effectiveness. The modeling method using fractal functions to characterize the rough surface of special threaded joints not only possesses determinism and uniqueness but also accurately describes the morphology of the rough surface, providing an effective and accurate method for refined solid modeling of special threaded joints.

The invention relates to the technical field of intelligent engineering design assistance, in particular to an engineering design drawing auxiliary method based on a multi-modal large model, which comprises the following steps of: constructing a multi-source knowledge base containing document text class and drawing class knowledge sub-libraries based on a retrieval enhancement generation technology; the structured storage is carried out through semantic analysis, entity modeling and information extraction; the system is deployed in AutoCAD and Civil3D in a plug-in form, and supports button or text interaction. Receiving a to-be-processed drawing and a professional specification range, cooperatively identifying an entity through a CAD interface and a multi-mode large model, comparing retrieval specifications, outputting a drawing checking result containing error positioning and deviation early warning, and supporting case recommendation of cosine distance matching; the problems that in the prior art, the image feature extraction and image-text alignment precision is insufficient, the multi-modal information fusion performance is poor, and the design information processing efficiency is low are solved, and the engineering design drawing examination accuracy and the design scheme generation efficiency are improved.

The invention discloses a digital twin reservoir entity modeling and reservoir capacity integrated calculation method. The method comprises the following steps: constructing four-dimensional structured data; generating a virtual drill hole; constructing a three-dimensional entity model; integrally calculating the storage capacity and dynamically correcting the storage capacity; the invention further discloses a system used by the digital twin reservoir entity modeling and reservoir capacity integrated calculation method. According to the method, the multi-source data are integrated through the four-dimensional structured data, the data format and reference are unified, information loss caused by multi-software cooperation is avoided, and the problem of data splitting is solved. According to the method, a hydrodynamic model can be coupled, dynamic simulation of reservoir capacity-incoming water-flood discharge is realized, four-pre-decision (forecasting, early warning, rehearsal and plan) of flood control is supported, and intelligent management of the reservoir is facilitated.