37results about How to "The simulation effect is accurate" patented technology

The invention provides a method for realizing an endoscopic minimal invasive surgery simulated training 3D platform system, which comprises the following steps of: 1. constructing a 3D platform system basic component library: constructing a 3D platform system basic component library through utilizing a basic algorithm; 2. realizing acore function of the 3D platform system: constructing a 3D platform system core algorithm through utilizing the 3D platform system basic component library and realizing the construction of a geometrical model and a physical model, graphic rendering, collision detection, force feedback, data communication with an operation platform and data exchange of a database; 3. constructing a medical model descriptive language: defining the geometrical and physical attributes of the models in a script way on the basis of the 3D platform system core algorithm and realizing program and data separation for facilitating system maintenance and management; and 4. calling the medical model, constructing a medical scene and stimulating various actions of the endoscopic minimal invasive surgery, which include grabbing, cutting, sewing, tying, titanium clip feed, smoke and bleeding. The invention supports force feedback and fictitious touch functions and supports various modeling methods.

Disclosed are embodiments of a method, system and program storage device for accurately modeling parasitic capacitance(s) associated with a diffusion region of a silicon-on-insulator (SOI) device and doing so based, at least in part, on proximity to adjacent conductive structures. In these embodiments, the layout of an integrated circuit design can be analyzed to determine, for the diffusion region, shape, dimension and proximity information. Then, a formula can be developed and used for determining the parasitic capacitance between the diffusion region and the substrate below (CD-S). This formula can have a perimeter component, including a side edge component and, if applicable, a corner component, both of which account for the fact that CD-S is generally dependent on the distances between the diffusion region and any adjacent conductive structures. Additionally, the parasitic capacitance between the diffusion region and any adjacent conductive structure (CD-D) can be determined based on such distances.

The invention relates to an interactive sand table demonstration system and method. The system comprises a motion sensing device, a projecting device, a three-dimensional display module and a host system. The method includes the steps that first, system connection is completed, a sand table area is covered with a projected shadow, and the motion sensing device is used for capturing action information and space information in a set sand plate area; second, a relevant device is started, the motion sensing device acquires the space information of a sand table and transmit the space information to the host system, and after the space information is processed through the host system, contour lines are drawn on the sand table through the projecting device; third, when barriers exist above the sand table, action information and space information of the barriers are acquired; fourth, whether the barriers are relevant to changes of the space information of the sand table or not is judged, if not, cloud layer simulation is performed, a cloud layer coverage area and cloud layer thickness are included, then, different rainfalls can be formed through conversion, the rainfalls are converted into the accumulated water amount, and the accumulated water amount and the accumulated water flow speed are simulated; if yes, the space information of the sand table in the system is updated. The system and method are high in simulation accuracy and good in demonstration effect.

The invention relates to an intelligent human platform establishing method for equipment design and evaluation. The method comprise the steps of 1) building a real three-dimensional digital soldier parameterized model, and controlling the human body height, weight and percentile; 2) performing individual movement simulation; 3) performing individual equipment parametric modeling and building a model base; 4) performing geometrical efficiency evaluation, biomechanical analysis evaluation, load metabolism analysis evaluation and comprehensive operational effectiveness fuzzy evaluation on single soldiers on the basis of prior standards, calculation models and independent experiment data. The main objective of the human platform is to develop individual equipment and soldier system ergonomic characteristics fully, study relations of soldiers, equipment and battlefield environments and how to design and improve the relations so as to achieve the reasonable combination, and accordingly, the developed equipment can be suitable for solider physiological and psychological characteristics, and the individual comprehensive operational effectiveness and survivability can be improved. The method can be widely applied to individual training.

The invention discloses a health and guarantee integrated management universal system of unmanned intelligent equipment, and belongs to the technical field of unmanned intelligent equipment. The health and guarantee integrated management universal system of the unmanned aerial vehicle intelligent equipment comprises a data server host and a WEB display terminal, wherein the data server host is connected with the WEB display terminal by a WEB interface, a data detection unit and a data transmission unit are arranged on unmanned intelligent equipment manufacturing matched equipment, the data server host is in signal connection with the data detection unit and the data transmission unit, the data server host comprises the following units of an external data receiving unit, and the external data receiving unit is used for receiving a signal detected by the data detection unit on the unmanned intelligent equipment manufacturing matched equipment. By the health and guarantee integrated management universal system, the problems of technical state monitoring, fault warning and diagnosis, application and maintenance decision, automatic recovery and the like of the equipment having unmannedcharacteristic are solved, and the modularization, the standard and high reliability of the health and guarantee integrated management system of the unmanned intelligent equipment are achieved.

The invention provides a method for analyzing stress of an asphalt pavement structure in different interlayer bonding states, and belongs to the technical field of asphalt pavements. The problems thatat present, modeling of pavement structures in different interlayer bonding states is inaccurate, and results have errors are solved. The method comprises the following steps: generating an asphalt pavement structure initial model with determined gradation of each layer by adopting discrete element software; secondly, setting corresponding boundary conditions, physical parameters of a material ina pavement structure layer and a contact model among unit particles, and establishing a discrete element mechanical analysis model; and finally, using a servo mechanism for simulating vehicle loads to load the asphalt pavement in different combination states, monitoring tensile stress, shear stress, tensile strain and pavement surface deflection value data at the load positions of all structurallayers of the pavement, drawing a stress data comparison graph, and analyzing the stress conditions of the asphalt pavement structure in different interlayer combination states. The method provided bythe invention is visual, simple and convenient, accurate in calculation data, and suitable for simulating various asphalt pavements in different interlayer states.

A test system is provided for simulating pre-tensioner systems that use pyrotechnic gas generators. In a preferred form, the test system includes a pneumatic cylinder energized by pressurized air from an accumulator and passing through a fast acting ball valve. A substantially linear relationship is established between accumulator pressure and the time rate of change of acceleration of a piston in the pneumatic cylinder. Use of the test system allows improved evaluation of seat belt systems employing pre-tensioners with pyrotechnic gas generators.

Disclosed are embodiments of a method, system and program storage device for accurately modeling parasitic capacitance(s) associated with a diffusion region of a silicon-on-insulator (SOI) device and doing so based, at least in part, on proximity to adjacent conductive structures. In these embodiments, the layout of an integrated circuit design can be analyzed to determine, for the diffusion region, shape, dimension and proximity information. Then, a formula can be developed and used for determining the parasitic capacitance between the diffusion region and the substrate below (CD-S). This formula can have a perimeter component, including a side edge component and, if applicable, a corner component, both of which account for the fact that CD-S is generally dependent on the distances between the diffusion region and any adjacent conductive structures. Additionally, the parasitic capacitance between the diffusion region and any adjacent conductive structure (CD-D) can be determined based on such distances.

The invention discloses a channeling-blockage physical simulation experiment device and an effect evaluation method. The channeling-blockage simulation physical experiment device comprises a kettle body and a sleeve, wherein an annular pressure rubber sleeve is arranged between the kettle body and the sleeve; a ring-shaped cavity is formed between the annular pressure rubber sleeve and the sleeveand is used as a cement ring; an upper flange and a lower flange are respectively arranged at the upper end and the lower end of the kettle body and are respectively provided with a liquid injecting hole and a liquid discharging hole which are respectively communicated with the ring-shaped cavity; the upper flange is a ring-shaped flange, a small flange for sealing the upper end of the sleeve is arranged at the middle part of the upper flange, and a pressurizing hole is formed in the center of the small flange; when a channeling blockage simulation experiment is carried out, a constant-flux pump is communicated with the pressurizing hole, and when the evaluation of the channeling blockage effect is carried out, the constant-flux pump is communicated with the liquid injecting hole. The physical channeling-blockage simulation experiment device disclosed by the invention has the beneficial effects that a channeling path can be formed in a simulation manner to carry out a channeling-blockage physical simulation experiment, and a new method for simply and accurately evaluating the channeling-blockage effect is established, so that convenience is brought for preferring a channeling-blockage agent according to the site condition, and an experimental result also can provide reference for site channeling-blockage operation.

The invention relates to a dynamic frame interpolation technology-based curved surface process time and space simulation method. The method comprises the following steps of: starting simulating; constructing a simulation initial curved surface; initializing parameters of the curved surface simulation; constructing dynamic frame interpolation; and performing three-dimensional display on the curvedsurface constructed by the frame interpolation. The step of constructing the dynamic frame interpolation comprises the following steps of: calculating time values, calculating Z values of all points in a frame interpolation way, updating the Z values of all the points, and reconstructing again. According to the method, a curved surface space model is constructed in each frame interpolation time and is displayed by continuously calculating the time values until the last curved surface model is displayed. By the dynamic frame interpolation technology, the problem that the simulation process hops and is not fluent when a sample observation value is relatively limited, the conventional expression way of observation information is broken through, the observation information is expressed by pictures with curved surface time and space change, the change process is vividly and directly simulated, and the method is especially suitable for the simulation of the change process of the curved surfaces of groundwater simulation, ground subsidence and the like.

The present invention discloses an airport check process optimization method based on a queuing theory and generalized stochastic Petri nets. The method comprises the steps of: obtaining airport checklayout information, and constructing a check process model based on the queuing theory, the generalized stochastic Petri nets and the check layout information; obtaining airport checking historical information, wherein the airport checking historical information comprises customer arrival time intervals and time required by service counter for target detection; substituting the checking historical information into the check process model for simulation calculation, and obtaining a simulation result; comparing simulation results to determine whether the results meet an expected effect or not,if no, correspondingly increasing check resources at transitions corresponding to a bank with the most average tokens or reducing check resources at transitions corresponding to a bank with the fewestaverage tokens; and continuously performing simulation calculation until the results meet the expected effect. The airport check process optimization method can accurately and effectively achieve optimization of the airport check process and can improve the check efficiency and quality.

The invention discloses an FC network simulation terminal for achieving multi-channel simulation. The FC network simulation terminal comprises a central processing unit, an interface testing adapter, a PCI-EXPRESSX4 interface, an interface chip, a first reference clock chip, a second reference clock chip and an FPGA. The interface testing adapter, the PCI-EXPRESSX4 interface, the first reference clock chip, the second reference clock chip and the FPGA are all connected with the central processing unit, and the interface chip is connected to the FPGA. By means of the principle, an FC network simulation device can achieve multi-channel simultaneous simulation at the same time, the simulated effect is accurate, and the network communication reliability is improved.

The invention provides a block stone shape and broken accumulation body discrete element three-dimensional modeling method. The method comprises the following steps: feature points are set on the surface of a block stone; the dimension stone is photographed, and geometric information of the dimension stone is extracted; a non-block stone part in the picture is subjected to mask processing and then imported into three-dimensional live-action modeling software, spatial position information matching of all surfaces of the block stone is obtained, noise point clouds are removed, a block stone three-dimensional initial model is generated, and a block stone grid model database is established; redundant block stone grids in the block stone three-dimensional initial model are removed, and mesoscopic parameter calibration is performed to obtain soil particle parameters and block stone parameters; block stone putting is performed on the block stone grid models in the block stone grid model database by using a stone content control program based on particle flow analysis software to generate a block stone numerical model; an accumulation body numerical model is generated in particle flow analysis software; and accumulation body parameter calibration is performed on the accumulation body numerical model to obtain an accumulation body discrete element three-dimensional model.

The invention relates to an environment simulation vibration test system for an unmanned aerial vehicle in a real flight state, and the system comprises the unmanned aerial vehicle, a simulation cavity, an environment control system, and a data processing device. The environment control system comprises a controller, a temperature simulation device, a humidity simulation device and a wind power simulation device, wherein the temperature simulation device, the humidity simulation device and the wind power simulation device are controlled by the controller to adjust the temperature in the simulation cavity, the humidity in the simulation cavity and the wind power flow direction and magnitude in the simulation cavity. By the adoption of the system, the environment simulation vibration test system under the actual flight state of the unmanned aerial vehicle accurately simulates the real environment, and therefore accurate test data are obtained.

The invention relates to an oil-submerged pump damage degree evaluation system and method based on particle analysis. The method comprises the steps: measuring the temperature, pressure and flow of transformer oil through a measuring system; detecting the components and granularity of solid particles in oil at an inlet and an outlet of an oil-submerged pump by using an oil granularity detector; determining boundary conditions according to the temperature, the pressure, the flow, and the components, the density and particle size distribution of the oil at the inlet and the outlet of the oil-submerged pump; selecting a proper erosion model for numerical simulation of a main eroded area and the overall erosion rate of the oil-submerged pump; calculating the accumulation of the volume of the oil-submerged pump generated by particle erosion along with time; detecting the particle concentration and particle size distribution of the inlet and the outlet of the oil-submerged pump after a specific period of time, and comparing with a simulation result of the erosion model; and predicting the damaged part and damage degree of the oil-submerged pump through the simulation model after comparison and calibration, and giving a warning when the oil-submerged pump reaches a threshold value.

The invention discloses a cloth simulation method and system for anisotropic materials based on a spring mass point model, electronic equipment and a storage medium, and belongs to the technical field of simulation, and the method comprises the steps: carrying out the discrete triangular mesh division of cloth, and obtaining the vertex coordinates of each triangle on the cloth; spreading and paving the cloth in the two-dimensional texture coordinate system to obtain two-dimensional texture coordinates of the vertexes of the triangle; carrying out spring mass point deformation calculation on each triangle vertex to obtain a new coordinate on each time node; calculating and rendering a normal vector of the surface, and drawing a dynamic deformation visualization effect in a real-time simulation manner; performing mass point spring iterative deformation calculation on the vertexes of the triangle, and calculating the elastic force between any two vertexes in the vertexes of the triangle, wherein the strength coefficient of the elastic force comprises the X-axis direction and the Y-axis direction in a two-dimensional texture coordinate system. According to the method, an anisotropic bending method is introduced, so that the anisotropic behavior of the cloth is controlled by adjusting two-dimensional parameters in the local material direction in cloth simulation.

The invention provides a method for realizing an endoscopic minimal invasive surgery simulated training 3D platform system, which comprises the following steps of: 1. constructing a 3D platform system basic component library: constructing a 3D platform system basic component library through utilizing a basic algorithm; 2. realizing acore function of the 3D platform system: constructing a 3D platform system core algorithm through utilizing the 3D platform system basic component library and realizing the construction of a geometrical model and a physical model, graphic rendering, collision detection, force feedback, data communication with an operation platform and data exchange of a database; 3. constructing a medical model descriptive language: defining the geometrical and physical attributes of the models in a script way on the basis of the 3D platform system core algorithm and realizing program and data separation for facilitating system maintenance and management; and 4. calling the medical model, constructing a medical scene and stimulating various actions of the endoscopic minimal invasive surgery, which include grabbing, cutting, sewing, tying, titanium clip feed, smoke and bleeding. The invention supports force feedback and fictitious touch functions and supports various modeling methods.

The invention discloses an apparatus and method for simulating natural corrosion of reinforced concrete and especially relates to an automatic control device for simulating natural corrosion of reinforcing steel bars in the reinforced concrete and a method for testing durability of the reinforced concrete. The automatic control device for simulating natural corrosion of reinforcing steel bars in the reinforced concrete comprises a power supply, a controller, a solenoid valve, a sensor, a main water pipe, a spraying sprinkler, an electrode, an electrolyte storage tank, a testing tank, a direct-current voltage stabilizer and a reinforced concrete sample. According to the invention, through adjusting the concentration of a NaCl solution, humidity of wet salty sand and current intensity, the effect of a natural corrosion environment can be simulated under laboratory conditions; data is acquired by using test time history, monitoring is controlled in real time, and a deteriorated reinforced concrete test piece in a corrosion environment is obtained; and the corrosion test piece can be used for research on endurance properties like corrosion morphology of the reinforcing steel bars and corrosion depth of corrosives and mechanical properties of the test piece after performance degradation of the reinforced concrete.

The invention relates to a drilling platform rising and falling unit transmission efficiency simulation method and system based on weighting. The method comprises the following steps: (1) modeling a drilling platform rising and falling unit transmission device; (2) introducing the model into an Adams mechanical system, and processing the model according to needs analyzed by the Adams mechanical system; (3) carrying out virtual prototype simulation, and outputting simulation data into a text file; (4) sampling the simulation data at an equally-spaced interval of time so as to obtain multiple groups of discrete data points, and carrying out initial calculation on an efficiency value; (5) fitting the obtained efficiency value by a weighted least-squares method, thereby obtaining an efficiency curve. The method and the system have the advantages that being different from evaluation criteria to the data dispersion degree of the existing methods, the influence caused by the data points with high dispersion degree is weakened, data information with lower dispersion degree is emphasized, the interference resistance of a calculating process is correspondingly enhanced, and an obtained efficiency curve calculated result is more actual.

The invention discloses a cloth simulation method, system, electronic equipment and storage medium of an anisotropic material based on a spring mass point model, and belongs to the field of simulation technology, including discretizing the cloth by triangular mesh division, and obtaining each material on the cloth. Triangle vertex coordinates; spread the cloth in the two-dimensional texture coordinate system to obtain the two-dimensional texture coordinates of the triangle vertices; perform spring particle deformation calculations on each triangle vertex to obtain new coordinates at each time node; calculate the surface The normal vector of the triangle is rendered, and the effect of dynamic deformation visualization is drawn in real-time simulation; the iterative deformation calculation of the particle spring for the triangle vertices includes the elastic force between any two vertices in the triangle vertices, and the strength coefficient of the elastic force includes the two-dimensional texture coordinate system X-axis and Y-axis directions. The invention introduces an anisotropic bending method, so that the cloth simulation can control the anisotropic behavior of the cloth by adjusting the two-dimensional parameters of the local material direction.

The invention discloses an urban and rural construction layout simulation system which comprises a password input module, the output end of the password input module is electrically connected with a password comparison module, the input end of the password comparison module is electrically connected with a password storage module, and the output end of the password comparison module is electrically connected with a data input module. According to the invention, the position building / changing module, the real-time dynamic monitoring module, the data query and analysis module, the data summarization progress module, the on-site video information access module, the data entry module and the data retrieval module are used in cooperation, the changed information can be changed and displayed intime, and the simulation effect of the simulation system is more accurate; the problem that after the data of the simulation system is changed, the changed information cannot be synchronously changedand displayed in time, so that subsequent data is prone to mismatching during comparison, and consequently the urban and rural construction layout simulation system is inaccurate in simulation is solved; and the urban and rural construction layout simulation system is worthy of popularization.

The invention discloses a feedback control device and method for space lateral constrained loading of a test member. The feedback control device comprises a group of loading devices and a group of restraining devices, wherein the group of loading devices is arranged on one longitudinal side of the test member; each loading device is arranged corresponding to the nodes of the test member to apply load in the main loading direction to the nodes; the group of restraining devices is arranged on one transverse side of the test member to constrain the lateral displacement of the nodes; a first displacement measuring device is arranged on an opposite side of each restraining device; the first displacement measuring devices are used for measuring the actual lateral restraint displacement at the corresponding positions of the test member; a second displacement measuring device is arranged on an opposite side of each group of loading devices; and the second displacement measuring device is usedfor measuring the displacement in the actual main loading direction of the corresponding node on the test member. Through adoption of the feedback control device and method, the technical problems ofdifficulty in accurately reproducing the boundary conditions of component constraints in traditional tests and low accuracy and reliability of the test results are solved.

The invention relates to an interactive sand table demonstration system and method. The system comprises a motion sensing device, a projecting device, a three-dimensional display module and a host system. The method includes the steps that first, system connection is completed, a sand table area is covered with a projected shadow, and the motion sensing device is used for capturing action information and space information in a set sand plate area; second, a relevant device is started, the motion sensing device acquires the space information of a sand table and transmit the space information to the host system, and after the space information is processed through the host system, contour lines are drawn on the sand table through the projecting device; third, when barriers exist above the sand table, action information and space information of the barriers are acquired; fourth, whether the barriers are relevant to changes of the space information of the sand table or not is judged, if not, cloud layer simulation is performed, a cloud layer coverage area and cloud layer thickness are included, then, different rainfalls can be formed through conversion, the rainfalls are converted into the accumulated water amount, and the accumulated water amount and the accumulated water flow speed are simulated; if yes, the space information of the sand table in the system is updated. The system and method are high in simulation accuracy and good in demonstration effect.

The invention discloses a mine shaft deformation simulation experiment device. The device comprises a water storage barrel (1) which is connected with a high-pressure water pump (4) through a water pump water inlet pipe (3), and the high-pressure water pump (4) is connected with a pressurizing pipe water inlet (6) through a water pump water outlet pipe (5); a pressurizing pipe (15) and a pressurerelief pipe (16) are mounted on the base (14), and electromagnetic valve water valves (17) are mounted on the pressurizing pipe (15) and the pressure relief pipe (16) respectively; a shaft (7) is detachably and fixedly connected with the base (14), a telescopic high-pressure water hose (10) is installed on the shaft (7) and connected with the pressurizing pipe (15) and the pressure relief pipe (16), an operating table (2) controls opening and closing of the electromagnetic valve (17) and starting and stopping of the high-pressure water pump (4), and pressure adjustment in the telescopic high-pressure water hose (10) is achieved. According to the invention, shaft stresses of different stratum division layers and different geological conditions can be simulated, arbitrary adjustment of the pressure in the telescopic high-pressure water hose is realized, and the simulation effect is more accurate.

The invention provides a simulation method and system for transmission efficiency of an elevating unit of a drilling platform based on filter. The method comprises following steps: (1) three-dimensional modeling: modeling a transmission device for elevating unit of the drilling platform; (2) modeling processing: importing a model to an Adams mechanical system and to process the model; (3) simulation analysis: simulating a virtual prototype and outputting virtual data to a text file; (4) low-pass filtering: establishing a low-pass filter used for carrying out low-pass filtering operation on all simulation data and making average calculations of an output result of the low-pass filter; (5) calculations of transmission efficiency: calculating average value of all simulation data to make calculations of transmission efficiency of gears in order to obtain efficiency curves. The simulation method and system for transmission efficiency of the elevating unit of the drilling platform based on filter have following beneficial effects: different from a conventional evaluation criterion of data discretization degree in the prior art, influence on data points with great discretization degree is lessened and data information with lower discretization degree is highlighted; anti-interference performance is improved during a calculating process and the obtained efficiency curve result is more suitable to the reality.

The invention discloses a condition control device and a condition control method for spatial lateral restraint loading of a test component, wherein the condition control device comprises loading devices and restraining devices, wherein there is at least one set of loading devices disposed on a longitudinal side of the test component; each loading device is correspondingly set with the node position of the test component; there is one set of restraining devices disposed on a lateral side of the test component for constraining the lateral displacement of the nodes; first displacement measuringdevices are arranged at each node of the test component and on the opposite side of the corresponding restraining device; a set of second displacement measuring devices are arranged on the opposite side of each set of loading devices on the test component along the lateral interval; and the second displacement measuring devices are used for measuring the actual main loading direction displacementof the corresponding nodes on the test member. The condition control device and condition control method for spatial lateral restraint loading of a test component solve the technical problem that theboundary condition of the component constraint in the traditional experiment is difficult to accurately reproduce, the loading system error is not considered in the test, and the precision and credibility of the test result are low.

The invention discloses an intelligent training simulation system for processing power transformation operation and maintenance accidents. The intelligent training simulation system comprises a control layer, an information layer and a display layer, wherein the control layer is configured to read multipoint sampling data, submit the data to the information layer and simulate and display working processes of opening and closing of switches and disconnecting links and switching of protection pressing plates during an accident handling process through flash graphic interaction and frame technologies; the information layer is configured to realize remote control and dispatch in a B / S mode and ensure the security of Internet interaction by arranging a firewall or a proxy server; and the display layer is used for feeding back data variation conditions of the information layer and displaying the interaction information of the control layer. The intelligent training simulation system has the advantages of wide applicability and accurate simulation ability.

A feedback control device and a control method for lateral restraint loading of a test member space, wherein the feedback control device includes a loading device and a restraint device; a set of loading devices is arranged on one longitudinal side of the test member; each loading device is connected to the test member. The nodes corresponding to the test members are set to apply loads in the main loading direction to the nodes; there is a set of restraint devices, which are arranged on the lateral side of the test member to restrain the lateral displacement of the nodes; on the opposite side of each restraint device, all are arranged There is a first displacement measuring device; the first displacement measuring device is used to measure the actual lateral restraint displacement at the corresponding position on the test member; a group of second displacement measuring devices is arranged on the opposite side of each group of loading devices; the second displacement measuring device It is used to measure the actual main loading direction displacement of the corresponding node on the test member. The invention solves the technical problems that the boundary conditions constrained by the components in the traditional test are difficult to reproduce accurately and the accuracy and reliability of the test results are low.