164 results about "3d simulation" patented technology

The invention relates to the technical field of cultural heritage digital protection, in particular to a super-volume historic building three-dimensional simulation modeling method based on multi-source heterogeneous data, and the method comprises the steps: firstly collecting node multi-source heterogeneous data such as laser point cloud, images, structural mechanical parameters and historical repair records, and then carrying out node feature enhancement through a node feature enhancement module; using an improved generative adversarial network to strengthen node edge features, adopting an adaptive threshold segmentation algorithm to extract surface texture features, converting mechanics and size data into a three-dimensional constraint condition parameter matrix, then using a topological relation verification algorithm, using a graph neural network to traverse and verify a component connection relation, and obtaining a three-dimensional confrontation model; and a re-calibration mechanism is triggered when the deviation exceeds the limit, the weight is adjusted based on a Bayesian optimization algorithm, fusion verification is carried out again, finally, hierarchical grid division is adopted to construct high-precision sub-models, and the sub-models are spliced into an integral three-dimensional model, so that the model precision and reliability are improved, and reliable digital support is provided for ancient building protection.

The invention discloses a 3D intelligent simulation generation method for clothing styles based on a model library, and relates to the technical field of digital twinning, and the method comprises the steps: carrying out the entity relation extraction and semantic mapping of multi-source clothing data, constructing a cross-modal knowledge graph, and extracting a physical constraint rule of the cross-modal knowledge graph; performing association reasoning and cross validation on the physical constraint rule and the version library to obtain a basic version template set; inputting the basic model template set into an intelligent clothing model, performing structured feature decoupling by the parameter analysis layer, dynamically adjusting a topological structure by the geometric generation layer, and generating 3D simulated clothing; and carrying out digital modeling on the basic model template set through a digital twinning algorithm, constructing a digital twinning body, carrying out physical simulation and optimization verification on the 3D simulation clothing by using the digital twinning body, and outputting a clothing style 3D simulation scheme. According to the invention, by constructing the pattern library and the intelligent garment model, the efficiency, accuracy and individuation level of garment 3D simulation generation are improved.

The invention discloses a plastic effect simulation display method and system based on a 3D simulation technology, and relates to the technical field of medical information, and the method comprises the steps: collecting the facial data of a patient, and constructing a multi-level facial structure initial model; constructing a hybrid deformation model; individual characteristic parameters of a patient are extracted, and an individual biomechanical parameter set is generated through the biomechanical parameter prediction network; applying the personalized biomechanical parameter set to the mixed deformation model; operation input parameters of plastic surgery are received, and the deformation result of each layer of structure is calculated and displayed in real time based on a GPU parallel computing framework; constructing a tissue healing and recovery kinetic model, and generating appearance prediction data at different postoperative time points in combination with the deformation result; and performing three-dimensional visualization processing on the appearance prediction data. According to the method, CT / MRI, 3D structured light scanning and expression dynamic video sequences are creatively integrated, the limitation of traditional single-mode data modeling is broken through, and the soft tissue boundary recognition precision is remarkably improved.

The invention relates to the technical field of mechanical engineering, in particular to a three-dimensional simulation design method and system based on an elevator structure. The method comprises the following steps that an elevator structure drawing is obtained; a three-dimensional elevator assembly is constructed according to the elevator structure drawing; lift car static load simulation is conducted according to the three-dimensional elevator assembly, and lift car static load data are obtained; detecting the structural strength of the lift car based on the lift car static load data; evaluating welding defects based on the structural strength of the lift car, and generating welding defect data; identifying a weld weak area according to the welding defect data; determining the abrasion loss of the car structure based on the weld weak area; according to the lift car structure abrasion loss, the lift car bottom plate fracture risk is predicted; carrying out welding optimization design based on the fracture risk of the bottom plate of the lift car to obtain welding optimization design data; and traction and traction simulation is conducted according to the three-dimensional elevator assembly, and traction and traction data are obtained. Based on the mechanical engineering technology, the safety and stability of the elevator structure are improved, and the design precision and efficiency are remarkably improved.

The invention provides a three-dimensional simulation and infection scene decision optimization system and method based on digital twinning, and relates to the technical field of intelligent medical treatment and digital twinning crossing technologies. The three-dimensional simulation and infection scene decision optimization system and method based on digital twinborn comprises the following modules: a data acquisition module, a path optimization module, a risk analysis module, a disinfection scheduling module and a collaborative prevention and control module, by arranging an air microorganism sampler, ultra-wideband positioning equipment and a temperature and humidity sensor, pathogen concentration, personnel trajectory and environmental parameters are collected in real time. Through a multi-source sensor fusion algorithm and a space-time attention mechanism, weight fusion and noise filtering are carried out on pathogen concentration, personnel tracks and environmental parameters in a hospital environment, the problems of information isolation and noise interference in traditional data collection are solved, and the space-time relevance of multi-modal data is remarkably enhanced.

The invention discloses an intelligent fire-fighting AI collaborative early warning system and method fusing GIS and multi-source data, and relates to the technical field of fire-fighting safety, and the system comprises a GIS space modeling module which is used for constructing a digital twinborn model through integrating a building BIM model, fire-fighting facility distribution, a population density thermodynamic diagram, sensing equipment layout and real-time environment data; the multi-source data fusion module is used for integrating sensing equipment data, real-time environment data, meteorological information, manually reported hidden dangers and a historical fire case library, and outputting the data after standardization processing; the AI collaborative early warning engine module is used for accessing standardized data, realizing building fire dynamic risk assessment and outputting graded warning information; the 3D simulation drilling platform is used for calling the digital twinborn model, receiving graded alarm information and supporting fire spreading simulation, emergency drilling and plan optimization; and the block chain evidence storage module is used for storing alarm information and drill records. According to the invention, risk assessment and accurate prediction of the fire hazard can be realized.

The invention relates to the technical field of port operation simulation software systems, and particularly discloses a quay crane operation process simulation system and method for port intelligent driving. The quay crane operation process simulation system comprises a data interaction module, a quay crane motion simulation module, a service simulation module, a simulation control module, an operation backtracking module, an analysis and optimization module and a simulation display module. The method has the beneficial effects that a complex port operation process is completely mapped to a digital space through fine dynamic modeling and coding, a port manager can visually observe and analyze the whole operation process in a virtual environment through full-process digitization, and potential problems can be found and solved in time; based on the constructed 3D simulation environment, natural environment data and random events are combined to carry out work process simulation, meanwhile, simulation data are fed back to a simulation system to carry out closed-loop control, simulation errors are reduced, and the work process simulation authenticity is improved.

The invention belongs to the technical field of energy conservation and emission reduction, and particularly relates to a data center low-load air conditioner energy conservation control method and system.The method comprises the steps that an upper computer monitors an interface in real time to conduct visual digital modeling on a data center through a data center digital modeling method, and the data center is displayed in a 3D simulation and digital mode in real time; the network data communication system realizes data interaction and real-time communication by using a network communication link construction method; the data sensing system obtains equipment operation data in real time and supports energy-saving control of the air conditioner; the temperature prediction system is applied to the temperature change prediction method, and preprocessing of collected data, data set manufacturing and training of a neural network model are achieved. The equipment parameter control system is internally provided with an equipment operation parameter optimization control method, optimal combination optimization of air conditioner internal equipment operation parameters is achieved, and an instruction is issued and transmitted to the console to achieve control. And the console adjusts and controls the related parameters of the air conditioning equipment according to the control instruction received from the network data communication system.

The invention relates to the technical field of three-dimensional simulation scheduling, and discloses a three-dimensional simulation deduction and intelligent scheduling system for multi-scene collaborative operation. The system comprises a scene fusion modeling module, a dynamic deduction period calculation module, a resource dimension analysis module and a deduction strategy generation module. The scene fusion modeling module is used for generating a three-dimensional collaborative operation space model containing different operation scene space coordinate mapping relations and inter-scene resource flow paths based on multi-scene parameters configured by a user; a dynamic deduction period calculation module obtains the remaining duration from the current time to the preset deduction ending time, and calls a first dynamic mapping relation to calculate an initial deduction period; a resource dimension analysis module identifies the number of types of resources participating in the collaborative operation, and calls a second dynamic mapping relation to generate a periodic regulation factor; and the deduction strategy generation module performs weighted fusion on the two to obtain a self-adaptive deduction period, and formulates a three-dimensional simulation deduction strategy according to the self-adaptive deduction period to adapt to multi-scene dynamic change so as to realize efficient coordination of simulation and scheduling.

The invention relates to the technical field of additive manufacturing digital twinning, solves the technical problems of large calculation amount and long rendering time of a traditional 3D printing simulation method, and particularly relates to a 3D simulation system for quickly realizing additive manufacturing, which comprises the steps of loading and processing a model file, loading and processing a slice file and loading 3D model section data. According to the method, the cutting plane information of a target renderer or a material is dynamically set, the display and progress of a 3D printing model are controlled and managed, user interaction is controlled through a scroll bar, and through the operation, parts in the additive manufacturing printing process can be rapidly achieved on a Unity platform. According to the method, a vivid 3D printing simulation effect is quickly generated by utilizing a simplified geometric model, material attributes and an efficient rendering algorithm, and the whole printing process is simulated, so that a user can obtain visual preview of a printing object in a short time and can watch the whole printing process, and printing parameters can be better evaluated and adjusted.

The invention is suitable for the technical field of garment customization, and particularly relates to a garment customization 3D simulation and process sheet automatic generation method based on artificial intelligence, and the method comprises the steps: providing basic data support through obtaining garment customization parameters; three-dimensional parameter modeling is carried out based on the garment customization parameters, a three-dimensional fitting model corresponding to the garment customization parameters is determined, and the garment upper body effect is visually displayed; performing discrete grid division on the three-dimensional fitting model to obtain a first triangular grid topology corresponding to the three-dimensional fitting model; performing physical constraint iteration on the first triangular mesh topology based on the garment customization parameters to obtain a second triangular mesh topology corresponding to the three-dimensional fitting model; based on the second triangular mesh topology, a customization process sheet corresponding to the garment customization parameters is obtained, simulation and process sheet integration is achieved, the garment making efficiency and quality are effectively improved, and cut-part sewing errors are reduced.

The invention relates to the technical field of geological exploration, in particular to an underground environment data acquisition method and system for three-dimensional simulation environment modeling, working condition parameters are acquired and input into a CFD model, and an underground dynamic risk map is generated based on shock wave signals; the method comprises the following steps: collecting water mist data to construct a humidity field, and embedding humidity field data into a dynamic risk map generation process, which comprises the following steps: in an injection compression period, solving an N-S equation set, detecting and encrypting a key area grid through a pressure gradient, and generating a burst dust cloud form and density distribution. The results of four stages of turbulence evolution are fused to form a five-dimensional tensor structure including space coordinates, duration time, humidity compensation risk levels, a water film distribution thermodynamic diagram and a water mist light attenuation coefficient, different risk areas can be clearly marked, switching of data acquisition strategies is guided, the problems of artifacts and distortion are effectively solved, and the accuracy of data acquisition is improved. Accurate point cloud data can be obtained in a complex environment.

The invention relates to the related field of simulation verification of welding, discloses a BIM-based three-dimensional simulation verification method and system, and constructs a high-precision welding management implementation method in which reality is mapped to virtuality and reality data is corrected through virtual simulation in an analogue simulation mode. Simulation fitting can be carried out on thermal deformation of a workpiece joint at different positions in the welding process on the premise of condition synchronization, a small amount of change of the position of the joint relative to a cooling state when the current welding point is moved to the next welding point after welding is completed is judged, then a deviation correction value which should be made by the welding point is calculated, and the deviation correction value of the welding point is calculated. Compared with a welding control scheme in the prior art, more accurate welding seam positioning can be obtained, and the welding quality is improved.

The invention relates to the technical field of fuel safety, in particular to an integrated design method for a three-dimensional simulation model of a skid-mounted oil station. The method comprises the following steps that a skid-mounted oil station structure drawing is obtained; constructing an oil station three-dimensional assembly according to a skid-mounted oil station structure drawing; virtual assembly is carried out based on the oil station three-dimensional assembly, and an oil station three-dimensional simulation model is generated; acquiring fuel oil data, transmitting the fuel oil data to the fuel station three-dimensional simulation model, and performing fuel oil flow simulation to generate fuel oil flow data; oil product backflow is detected based on the fuel oil flowing data, and oil product backflow data are obtained; according to the oil product backflow data, fuel oil pipeline cavitation detection is carried out, and fuel oil pipeline cavitation data are obtained; marking the cavitation position of the pipeline based on the cavitation data of the fuel pipeline, and continuously monitoring the thermal load of a fuel pipe body at the cavitation position of the pipeline; and evaluating the fuel gasification risk based on the thermal load of the fuel pipe body. Based on the fuel safety technology, the safety, the stability and the design optimization efficiency of the skid-mounted oil station are improved.

The invention discloses a vehicle management system based on intelligent traffic. The vehicle management system comprises an acquisition preprocessing module, a traffic network analysis module, a query reasoning module, a track prediction module, a comprehensive monitoring module, a path optimization module, a scheduling management module, a 3D simulation module, a data management module and a report production module. The traffic network analysis module is respectively connected with the acquisition preprocessing module, the query reasoning module, the data management module, the report production module, the 3D simulation module, the comprehensive monitoring module and the trajectory prediction module, and the acquisition preprocessing module is connected with the data management module; the track prediction module is connected with the comprehensive monitoring module and the path optimization module. The comprehensive monitoring module is connected with the path optimization module and the 3D simulation module. The path optimization module is connected with the scheduling management module; and the 3D simulation module is connected with the scheduling management module. According to the invention, countermeasures can be rapidly taken for emergencies, the influence of the emergencies on traffic flow is reduced, and the event processing time is shortened.

According to the stainless steel and titanium alloy welded joint strengthening method based on CFD simulation, a stainless steel component is a cylindrical tube shell, one end of the cylindrical tube shell is completely open, and a through hole is formed in the other end of the cylindrical tube shell; the titanium component is a thin plate, and the thin plate is arranged in the cylindrical tube shell and is fastened by applying pressure; a FLOW-3D simulation platform is adopted, boundary conditions applied to six surfaces of a computational domain are all constant-pressure boundary conditions, and laser power, pulse frequency, defocusing amount, welding speed and material attributes serve as input to predict temporal and spatial changes of temperature, fluid flow and element distribution in a molten pool; and based on the prediction result of the FLOW-3D simulation platform, the nanometer laser is incident from one side of the thin plate at the predicted laser power, pulse frequency, defocusing amount and welding speed, the laser scanning track is a circular path, cooling is conducted to the room temperature after welding is completed, a supersaturated solid solution in a welding seam is reserved, and the situation that intermetallic compounds are separated out again is avoided.

The invention discloses an OSM-based urban traffic three-dimensional simulation scene modeling method and system, and the method comprises the steps: obtaining map data of a target simulation region, carrying out the preprocessing of the map data, and obtaining the preprocessing data; road shoulders, curbs and sidewalks are subjected to parameterization batch filling according to the preprocessed data, and a two-dimensional simulation model is correspondingly generated; defining a target data standard, generating a target high-precision map according to the target data standard and the two-dimensional simulation model, and converting the target high-precision map into a three-dimensional road network model through target software; based on three-dimensional visualization software, a three-dimensional simulation model is generated according to the three-dimensional road network model, and three-dimensional visualization simulation is generated based on a digital twinborn tool and a blueprint tool. Aiming at traffic simulation modeling requirements, the OSM map is used as a data source, the data conversion relation between the simulation model and the three-dimensional model is deeply explored, the automatic modeling efficiency of traffic simulation is improved, and the three-dimensional visualization capability of the simulation model is enhanced.

The invention relates to the technical field of glass bottle production, in particular to a three-dimensional simulation design method and system for a light-weight glass bottle production digital mold. The method comprises the following steps: constructing a digital mold geometric model for a glass bottle mold; a bubble escape priority path is identified according to the digital mold geometric model, and a glass bottle digital simulation model is constructed; executing molten glass flow-heat transfer-bubble evolution coupling simulation based on the glass bottle digital simulation model to extract a potential bubble nucleation and aggregation area; calculating a bubble defect tendency value of the potential bubble nucleation and aggregation area, and performing glass bottle production defect space mapping to generate a glass bottle production defect risk area; differentiated defect risk optimization is carried out on the glass bottle production defect risk area, so that the production design requirement of the light-weight glass bottle is met. According to the invention, through bubble escape path identification and three-dimensional coupling simulation, accurate positioning and differential optimization of the bubble defect risk of the glass bottle are realized.

The invention relates to the technical field of magnetic grid measurement optimization, and discloses a magnetic grid fixed-length adjusting system based on wireless transmission control, and the system comprises a digital twin simulation module which is used for constructing a 3D simulation model of a magnetic grid system through physical modeling, and synchronizing the data of a multi-source sensor; the hierarchical reinforcement learning control module is used for executing a macroscopic layer control strategy and a microcosmic layer control strategy on a macroscopic layer and a microcosmic layer respectively; the cross-domain migration evolution module is used for extracting common characteristics from macroscopic layer control strategies and microscopic layer control strategies trained under different equipment and different working conditions, constructing a parameter gene pool and obtaining control strategies suitable for new equipment according to the parameter gene pool; and the biological-like stress response module is used for performing real-time analysis on the data of the multi-source sensor according to the 3D simulation model of the magnetic grid system, and triggering a first preset control strategy when an abnormal behavior is detected. According to the invention, intelligent, self-adaptive, high-precision and cross-device compatible magnetic grid measurement adjustment is realized.

The invention discloses a simulation test method for electronic packaging equipment, which comprises the following steps of: importing PCB (Printed Circuit Board) design data to form a unified intermediate format; multi-dimensional parameter mapping association is carried out on the geometric entity and an equipment execution module of packaging equipment in the digital twin model library, and multi-dimensional parameters comprise space coordinates, thermal characteristics and electrical characteristics; according to the correlation result, a dynamic rule engine is called to generate and update process rules in real time, and the process rules comprise the solder paste jet printing speed, the dispensing pressure, the surface mounting force threshold value and the backflow peak temperature curve; loading the updated process rule to a digital twin model of the electronic packaging equipment, and driving the model to generate an executable control program; and running the control program in a 3D simulation environment to obtain a virtual running track, a heat distribution field and a stress field. According to the method, the trajectory, the thermal field and the stress field are output in advance through 3D simulation, the collision, warping and overheating risks are eliminated in the virtual stage, the number of real object proofing rounds is reduced, and the overall introduction cost is saved.

The invention relates to a method for optimizing the simulation precision of a 2.5 D high-speed transmission line, and the method comprises the steps: building a variable inductance transmission line model based on the principle that a 2.5 D simulation model port has loop inductance, scanning different inductance values of the model to simulate TDR impedance, obtaining an inductance parameter capable of fitting a high point of a 2.5 D simulation TDR impedance curve through a comparison fitting mode, and obtaining the simulation precision of the 2.5 D high-speed transmission line. A 2.5 D transmission line model is improved by establishing a de-embedding module, and the influence of loop inductance in a 2.5 D simulation result on the signal transmission quality is effectively removed, so that the 2.5 D simulation precision is improved, and the simulation precision can be compared with that of 3D simulation. Therefore, the simulation method is based on the 2.5 D simulation technology, the simulation speed is high, the obtained simulation precision is comparable with the 3D simulation precision, the 2.5 D simulation efficiency and the 3D simulation precision can be considered at the same time, the practical value is very high, and the method is worthy of application and popularization.

The invention discloses a parameter optimization method, device and system for a wireless slip ring magnetic coupling mechanism, and belongs to the technical field of electromechanical equipment design, and the parameter optimization method comprises the steps: carrying out the optimization from the aspects of coil parameters, coil turns and magnetic core parameters; performing parameter scanning and optimization selection on the coil parameters in the 2D simulation model to obtain optimized coil parameters, and performing optimization selection on the number of turns of the coil and the magnetic core parameters in the 3D simulation model to obtain optimized number of turns of the coil and optimized magnetic core parameters; further, whether the safety condition that the main magnetic circuit of the magnetic core is unsaturated is met or not is judged, if not, optimization continues, and if yes, a parameter optimization result is output. According to the method, a multivariable optimization problem is equivalent to a multi-single-variable and double-variable optimization problem, and compared with other parameter optimization methods of a magnetic coupling mechanism in a wireless power transmission system, parameter optimization of a coil magnetic core composite system is comprehensively considered, so that the performance of the wireless slip ring magnetic coupling mechanism can be greatly improved.

The present invention discloses a method for realizing the fog principle in a three-dimensional simulation visual scene, which includes the following steps: S1. Calculate the fog effect concentration fog according to the relative height h between the camera and the object; S2. Calculate the total attenuation Ifinal of the fog under sunlight and atmospheric scattering; S3. Calculate the fog scattering color Cinscattering; S4. Calculate the fog color change FogColor according to the fog effect concentration fog, the total attenuation Ifinal of atmospheric light transmission, and the fog scattering color Cinscattering. This method for realizing the fog principle in a three-dimensional simulation visual scene solves the problem in the prior art that the change of the fog color cannot be calculated according to the height between the camera and the fog.

A method of generating a mark on a 3D object in a 3D simulation includes the steps of: generating first depth information of a pixel unit corresponding to the 3D object based on viewpoint information observing the 3D object; weighting the first depth information to generate a reference plane based on a predetermined statistical value; generating a marking curved surface covering the 3D object based on the reference plane; and generating a mark on the mark curved surface based on the user input.

The invention relates to the technical field of unmanned aerial vehicle logistics and path planning, in particular to an improved grey wolf optimization method for unmanned aerial vehicle logistics distribution planning. The method comprises the following steps: firstly, constructing a three-dimensional simulation environment containing an obstacle and setting a path constraint condition; a comprehensive objective function is established, and four sub-objectives of path length, collision penalty, smooth penalty and height violation penalty are integrated through weighted summation; in the algorithm level, Kent chaotic mapping is adopted to generate an initial population to improve diversity, control parameters are changed into a nonlinear adaptive updating strategy to balance global exploration and local development, and a particle swarm optimization algorithm idea is fused to introduce an adaptive inertia coefficient and a dynamic weight coefficient to improve a grey wolf position updating rule; and finally, performing iterative optimization through an improved hybrid algorithm, and outputting an optimal path. The method can effectively improve the quality and efficiency of path planning, and enables the generated path to be economical, safe and smooth.

The invention relates to an interactive electric power simulation experience device, through scene simulation, students can directly feel teaching in an actual scene, the teaching cost is low, the risk is greatly reduced, the interactive electric power simulation experience device comprises a plurality of scene simulation devices, and the plurality of scene simulation devices are electrically connected with a 3D simulation computer. Each scene simulation device is internally provided with a field simulation model, and each scene simulation device is internally provided with a wearable motion capture device; a real working environment is simulated, so that the scene feeling of training is enhanced, students can obtain the feeling similar to experience of themselves, the students can interact with a three-dimensional scene, various business operations are simulated, workflow training simulation in the virtual working environment is achieved, and the training efficiency is improved. The design inspection of the switching operation simulation training system in the power industry shows that the learning enthusiasm of students in the three-dimensional interaction mode power simulation training is strong, the training effect is remarkable, and the three-dimensional interaction mode power simulation training system is widely applied to the technical field of power simulation experience.

The present invention relates to the field of computer simulation technology, and particularly to a three-dimensional simulation design method and system for a putty scraping device structure. The method includes the following steps: performing parameterized description processing and three-dimensional modeling design on the putty scraping device structure to generate a three-dimensional space model of the putty scraping device structure; performing scraping simulation environment parameter design and kinematic dynamic simulation analysis on the three-dimensional space model of the putty scraping device structure to obtain kinematic characteristic simulation results of the putty scraping device under different simulation environment parameter conditions; performing multi-physical field coupling simulation analysis on the three-dimensional space model of the putty scraping device structure to obtain scraping structure performance simulation results of the putty scraping device under different physical field coupling simulation conditions; and performing model parameter optimization processing on the three-dimensional space model of the putty scraping device structure to obtain a three-dimensional optimized model of the putty scraping device structure. The present invention can realize dynamic simulation modeling and optimized design of the scraping device.

The present invention discloses a method and system for simulating and displaying plastic surgery effects based on 3D simulation technology, which relates to the field of medical information technology. The method includes collecting facial data of a patient and constructing an initial model of a multi-level facial structure; constructing a hybrid deformation model; extracting individualized characteristic parameters of the patient and generating a personalized set of biomechanical parameters through a biomechanical parameter prediction network; applying the personalized set of biomechanical parameters to the hybrid deformation model; receiving operation input parameters of a plastic surgery, and calculating and displaying the deformation results of each layer structure in real time based on a GPU parallel computing framework; constructing a tissue healing and recovery dynamics model, combining the deformation results, and generating appearance prediction data at different time points after the surgery; and performing three-dimensional visualization processing on the appearance prediction data. The present invention creatively integrates CT / MRI, 3D structured light scanning and expression dynamic video sequences, breaks through the limitations of traditional single-modal data modeling, and significantly improves the accuracy of soft tissue boundary recognition.

This invention discloses a PCB characteristic impedance simulation optimization method and system based on 3D modeling, relating to the field of high-speed intelligent circuit technology. The method involves acquiring measured material parameters and process deviations of the PCB to generate twin parameter vectors; constructing a local 3D subdomain model; concatenating the local 3D subdomain model with the manufacturing twin dataset to obtain multi-dimensional physical feature vectors, which are then processed to obtain a sequence of key influencing factors; processing the key influencing factor sequence using an impedance prediction proxy model to obtain the time-domain reflection impedance curve and the corresponding coordinates of 3D spatial impedance abrupt change points; adjusting the coordinates of the 3D spatial impedance abrupt change points based on an impedance reshaping strategy to obtain optimal 3D compensation parameters; reconstructing the 3D simulation model using the optimal 3D compensation parameters to obtain updated PCB manufacturing data; and outputting impedance control parameters through a target verification rule engine to accurately locate the coordinates of impedance abrupt change points in 3D space, thereby improving design efficiency and quality.

The invention discloses a method for predicting cutting deformation of aviation thin-walled parts, which comprises the following steps of: performing multi-group cutting on the aviation thin-walled parts, and monitoring part materials, cutting heat conduction coefficients, inter-chip friction coefficients and chip separation coefficients while machining each group of parts; a cutting process model is established for the selected part according to a part material, a cutting heat conduction coefficient, an inter-chip friction coefficient and a chip separation coefficient, and three-dimensional simulation is conducted through the model. According to the aviation thin-wall part cutting machining deformation prediction method, 3D simulation is conducted on part cutting machining through the cutting process model, the influences of part materials, the cutting heat conduction coefficient, the inter-chip friction coefficient and the cutting chip separation coefficient on part machining deformation force are analyzed, and the cutting process model and a part three-dimensional model are combined, so that part machining deformation is predicted. And experiment and simulation are carried out, and the deformation force is analyzed and predicted according to the cutting machining change of the part.