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36 results about "Carrier model" patented technology

Finite difference time domain electromagnetic calculation carrier meshing method

The invention discloses a finite difference time domain electromagnetic calculation carrier meshing method. According to the method, the mesh size is jointly controlled by the discrete electrical dimensional accuracy and the carrier surface approximation accuracy, the geometrical approximation degree between the divided mesh model and the carrier model is high especially under the situation of low frequency with large wavelength, finite difference time domain electromagnetic calculation is performed on the basis of the mesh model, and the calculation result is relatively accurate; surface approximation accuracy controlling parameters for meshing the mesh model are provided, the blindness of meshing precision control of the conventional direct subdivision method is avoided, and the calculated amount for meshing can be effectively controlled; when mesh refinement is required, all that is needed is to perform octree recursive subdivision to the black nodes in the bottommost layer, and mesh refinement is easy to realize.
Owner:XIDIAN UNIV

Domestic ceramic die design and manufacture method based on reverse engineering

The invention relates to a domestic ceramic die design and manufacture method based on reverse engineering. The method comprises the following steps that three-dimensional point cloud data of a ceramic product are obtained; through reverse engineering postprocessing analysis, Imageware software large-scale mass three-dimensional point cloud data are utilized for processing and extraction, a grid model of a domestic ceramic product digital model is obtained, the model serves as a carrier model and is redesigned and modified, and innovative and novel elements are added; a three-dimensional embossment model is generated by applying the single-image three-dimensional reconstruction technology, the carrier model is subjected to local parameterization, and a hook face basso-relievo model is rapidly generated on the carrier grid model through the texture mapping principle; and according to the obtained grid model with the hook face basso-relievo model, a basso-relievo ceramic artware solid piece is output through the 3D printing manner, and a new domestic ceramic die is obtained. By means of the domestic ceramic die design and manufacture method based on reverse engineering, the traditional domestic ceramic die manufacturing period can be shortened.
Owner:DONGHUA UNIV

Carrier data safety protection method and recording system device of pre-payment meter

The invention is a data security protection and meter reading system device for an advance payment ammeter. When the user pays for electricity, the worker sends the electricity purchasing data to user ammeter through electric wire directly; the user ammeter carrier model receives the data, stores it into the electricity purchasing data memory circuit with determined format, and returns the affirmance information to the meter reading electricity sale computer through electric wire to be checked. The system is made up of meter reading electricity sale computer, meter reading collector, carrier of data memory circuit containing nonvolatile RAM device, user ammeter assembled together with the carrier model, a downstream channel and a upstream channel made up of low voltage electricity supplying circuit.
Owner:齐长远

Carrier model dual metal composite catalyst and method for preparing same

The invention discloses a carrier-type composite bimetallic catalyst and the preparation method thereof. The composite catalyst contains a Ti-containing compound without metal-phi bond, a meso compound containing a transition metal M selected from Ti, Zi, V or Hf with metal-phi bond, magnesium halide, alkyl aluminoxane or alkylaluminium and an internal electron donor. By combining the non-homogeneous Ziegler-Natta catalyst with a meso metallocene compound, the method can selectively control the propylene polymerization process and the copolymerization process of ethylene / alpha-olefins, thereby obtaining a polymer with an adjustable polymer constitution in a very large range. Accordingly, the method can be used for producing polyolefin alloys with adjustable performance and has wide application prospect.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Trajectory capture test system for simultaneous separation simulation of double external stores

The invention provides a trajectory capture test system for simultaneous separation simulation of double external stores, and belongs to the field of high-speed wind tunnel test technology and aircraft flight mechanics. The trajectory capture test system comprises a half-arm attack angle mechanism installed on a wind tunnel test section, and an aerial carrier model is fixedly connected with the half-arm attack angle mechanism through an aerial carrier supporting rod; a missile-loaded base is connected with the wall surface of the wind tunnel test section through a vertical movement mechanism, parallel bottom plates are connected with the missile-loaded base through rotating shafts, three-degree-of-freedom parallel mechanisms are installed on the parallel bottom plates respectively, the other ends of the three-degree-of-freedom parallel mechanisms are connected with a movable platform, and a rolling driving mechanism is arranged in the movable platform; and the movable platform is connected with missile-loaded balances and missile-loaded models through missile-loaded support rods. According to the invention, the two missile-loaded balances are used for respectively measuring the aerodynamic force and torque applied to the missile-loaded models, the motion modes of the two missile-loaded models are inversely solved, the motion of each driving device is controlled, the multi-degree-of-freedom position and attitude change of the two missile-loaded models is realized in a wind tunnel test section, and the simulation of the motion trajectory of the double-external store model is realized.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Vector data watermark anti-counterfeiting method based on geographical semantics support

The invention discloses a vector data watermark anti-counterfeiting method based on geographical semantics support. The method comprises the steps as follows: creating a fidelity description knowledge rule base of vector geographical data based on geographical semantics, creating a watermark carrier model according to the fidelity description knowledge rule base, embedding watermark information based on a typical watermark algorithm, extracting the watermark information, and checking the watermark information. According to the method, the watermark information is embedded into an application-sensitive data characteristic set based on the fidelity description knowledge rule base of the geographical data, so that the watermark robustness is effectively improved; by the typical watermark algorithm, a watermark embedding model taking high fidelity as a solving target guarantees the usability and the invisibility of watermark version data and improves the practicality of the algorithm; through dimensionless treatment of a watermark carrier, a geometric attack is invalid for the watermark model; and a method for adopting repeated embedding in a watermark embedding process and electing in a detecting process effectively improves the resistance of the watermark model to a common watermark attack.
Owner:HUNAN UNIV OF SCI & TECH

New-energy power plant model error positioning method and device

The invention relates to a new-energy power plant model error positioning method and device. The method comprises steps of: establishing an element carrier model of an equivalent external system according to the measured data of a new-energy grid-connected point, a feeder collection point and a dynamic reactive power compensation device; injecting the measured data into the element carrier model of the equivalent external system and creating a new-energy power plant model according to the model; simulating field disturbance to obtain the simulation data of a wind power plant and the grid-connected point of a PV power station under the disturbance; determining a deviation value according to the measured data and the simulation data, and calibrating the new-energy power plant model according to the deviation value in order to determine the position of a parameter error source of the new-energy power plant model. The new-energy power plant model error positioning method and device can accurately and completely position the errors of the wind power plant and the PV power station model, avoid errors of external system modeling, and greatly reduce modeling workload.
Owner:CHINA ELECTRIC POWER RES INST +3

Flexible multilayer structure deformability simulation method and device and computer equipment

The invention relates to a flexible multilayer structure deformability simulation method and device, computer equipment and a storage medium. The method comprises the following steps: establishing a planar geometric model of a flexible multilayer structure; setting structural attributes of the plane geometry model; establishing a carrier model; and obtaining a deformation model of the plane geometry model attached to the carrier model. According to the flexible multi-layer structure deformability simulation method and device, the computer equipment and the storage medium, the plane geometry model of the flexible multi-layer structure is established; the following steps are performed: setting structural attributes of the plane geometry model; establishing a carrier model; obtaining a deformation model of the plane geometry model attached to the carrier model; simulating the flexible multilayer structure, and allowing the planar geometric model of the flexible multilayer structure to bein contact with the carrier model in simulation, so that the deformation model of the flexible multilayer structure is calculated, the calculation is accurate and effective, the cost is reduced, and the detection efficiency is improved.
Owner:INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1

Virtual scene shelf display method and system based on Unity

The invention provides a Unity-based virtual scene shelf display method and system. The method comprises the following steps: establishing a shelf display 3D model set; wherein the shelf display 3D model set comprises a commodity 3D model set and a display carrier 3D model set; acquiring shot image data; identifying and analyzing the image data through a virtual scene shelf display deep learning algorithm to obtain image analysis data; and matching the commodity 3D model and the display carrier 3D model which are consistent with the image analysis data in the shelf display 3D model set, and placing the matched commodity 3D model in the matched display carrier 3D model to complete 3D virtual display reproduction. According to the method, the situation of the display scene is restored in the three-dimensional virtual scene, the restored result pictures and the terminal display videos under various postures can be provided, and the terminal display situation can be comprehensively and accurately controlled for fast-moving consumer enterprises, so that the actual situation of the sales market can be timely and effectively controlled, and a correct decision can be made.
Owner:GUANGZHOU XUANWU WIRELESS TECH CO LTD

Experimental device for compensating insufficient vertical acceleration of light model method

The invention relates to an experimental device for compensating insufficient vertical acceleration of a light model method. The device is arranged in a wind tunnel experiment section. The device is connected with an embedded weapon throwing model, and comprises an aerial carrier model, an embedded missile model, an ejection mechanism, a traction block, a protective sleeve, and a traction block wire. The embedded missile is connected with the traction block into a whole through the traction block wire to move downwards; the traction block wire penetrates through the mass center of the embeddedmissile to provide a virtual force FV which is constant in size and vertical in direction for the embedded missile, and due to the fact that the FV acts on the mass center of the embedded missile, the FV does not act on rotating motion of the embedded missile relative to the mass center and only generates the effect on displacement Z of the embedded missile in the vertical direction. The device has the advantages of simple design, processing and assembly, strong model size adaptability, constant virtual force, no influence on a flow field near an external store and the like.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Planetary gear box bolt analysis method

The invention discloses a planetary gear box bolt analysis method. The method comprises the steps of: establishing a gear box system model which comprises a shell model, a planet carrier model, a gearbox shafting model and a gear box external load; specifying a plurality of meshing states according to a gear operation process in a gear box shafting model; obtaining reaction forces of the plurality of designated nodes in the plurality of meshing states, wherein the reaction forces of the plurality of designated nodes obtained in each meshing state respectively form a group of reaction forces;establishing a gear box connection model; in a finite element analysis process, according to the connection module obtained according to the above, setting a connection mode in the finite element analysis model, and loading the multiple groups of reaction forces obtained in the previous step into the finite element analysis model as boundary conditions, performing calculating to obtain the stressof the connecting bolt and the connecting pin in the gear box system model in each meshing state, and calculating the safety coefficient and / or fatigue damage of the connecting bolt and the connectingpin. According to the invention, the reliability of the connecting bolt and the connecting pin in the gearbox can be effectively evaluated.
Owner:CHONGQING GEARBOX

Trajectory capture system for aircraft-missile simultaneous separation simulation

A trajectory capture system for aircraft-missile simultaneous separation simulation adopts a double-rotating-shaft supporting mechanism as a supporting system of a carrier aircraft and adopts a parallel multi-degree-of-freedom mechanism as a supporting system of a carrier missile to perform three-degree-of-freedom attitude simulation on an aircraft carrier model and a missile carrier model so as to realize simultaneous simulation of positions and attitudes of the missile and the carrier aircraft in an aircraft-missile separation process. The system mainly comprises a wind tunnel test section, a half-arm attack angle mechanism, a double-rotating-shaft mechanism, a parallel multi-degree-of-freedom missile-carrying supporting mechanism, a carrier aircraft measurement balance, a carrier aircraft model, a missile-carrying measurement balance and a missile-carrying model.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Layout wiring method for simple tin stove carrier model of printed circuit board

ActiveCN105101667AEfficient designMeet the needs of the carrier processPrinted circuit assemblingCarrier signalEngineering
The invention discloses a layout wiring method for a simple tin stove carrier model of a printed circuit board. Aiming at the printed circuit board (PCB) employing a carrier wave soldering tin stove process, a simulated carrier model is built during a PCB layout wiring process; through analysis on the carrier model, the PCB is inspected and timely corrected, so that the designed PCB meets a later processing technology of the carrier wave soldering tin stove; the poor phenomenon of a failure of the designed PCB due to the fact that the carrier corresponding to the PCB cannot be designed, or missing solder after the PCB is matched with the corresponding carrier tin stove is avoided; and the product development schedule is quickened.
Owner:TAIAN TECH WUXI

Vector geospatial data digital watermark method based on DFT coefficient combination

The invention discloses a vector geospatial data digital watermark method based on DFT coefficient combination. The method comprises steps that the watermark information is generated; a map is taken as an object, and a watermark carrier model is established based on the DFT coefficient combination polynomial; the map object is taken as a unit, the watermark information is modulated into each map object based on the established watermark carrier model; the watermark information is extracted for verification. The method is advantaged in that based on the DFT coefficient combination polynomial ofa geometric object feature point set, the classical quantization index modulation method is utilized to modulate the watermark information into each DFT coefficient of the polynomial, so watermark intensity is distributed to multiple coefficients, without reducing robustness of the algorithm, watermark invisibility is effectively improved, and the high fidelity of the data is achieved.
Owner:HUNAN UNIV OF SCI & TECH

Method for designing performance parameters of wheel encasing type automobile carrier

The invention discloses a method for designing performance parameters of a wheel encasing type automobile carrier. The method comprises the following steps: firstly, establishing a carrier encasing clamp and carrying a kinetic model of an automobile, deriving a complete machine mathematic model of a carrier system, determining the rigidity, damping and mass matrix of the carrier model, and takingthe rigidity, damping and mass matrix of the carrier model as design space of performance of the carrier; and secondly, determining the constraint condition of the design of the carrier, constructinga carrier performance parameter agent model through repeated Latin hypercube experiments and numerical calculation and a minimum density-potential optimal sampling strategy, and solving the model by using an NSGA-II algorithm. The problems that dynamic factors are not considered during design of the carrier, and parameter design of the system is randomly determined according to empirical data aresolved, the system parameters and performance model of the carrier are constructed, stability of the design of the carrier is improved, and the design period of the carrier is shortened.
Owner:ZHEJIANG UNIV

Dose verification die body model manufacturing method, device thereof and system

The invention provides a dose verification die body model manufacturing method, a device thereof and a system, and the manufacturing method comprises the steps: S101, building a three-dimensional model according to the image data of a patient, and generating a dose detector model; S102, forming a space corresponding to the shape of the dose detector model in a patient target area and a dangerous organ of the three-dimensional model to generate a first three-dimensional model, and marking an area associated with the patient target area on the surface of the first three-dimensional model; and S103, cutting the first three-dimensional model to form a second three-dimensional model, performing 3D printing on the second three-dimensional model to obtain a carrier model, assembling the carrier model, and putting a dose detector into the carrier model to form the dose verification die body model. The model and the patient are kept consistent, the influence of external factors is reduced, thedifference between the verification dose and the actual dose of the patient is reduced, accurate instructions are achieved by controlling the dose endangering organs, an incident point, an area and direction of rays are determined in the mode of marking the associated area of the target area, and dose irradiation is facilitated.
Owner:GUANGDONG PUNENG BIOTECHNOLOGY CO LTD

Distributed power supply grid-connected and off-grid state detection method

The invention provides a distributed power supply grid-connected and off-grid state detection method. In a power system with information and energy fusion, high-frequency carrier signals are transmitted by means of a power cable, so that information is exchanged among different power devices. The method is executed in the distributed power supply, and on-grid and off-grid states of the distributed power supply are judged based on demodulation and analysis results of carrier signals. The carrier model demodulation and analysis method relates to a BP neural network intelligent algorithm, and the grid-connected and off-grid state pattern recognition relates to a pattern recognition algorithm of a multi-dimensional membership function. The grid-connected and off-grid state detection algorithm provided by the invention is rapid, sensitive, accurate and reliable, theoretically has no island detection blind area, and also has no possibility of false operation.
Owner:云南电网有限责任公司迪庆供电局

Optical landing assisting simulation system and method

ActiveCN112735222AGuaranteed optical guidance effectNo visual jump phenomenonCosmonautic condition simulationsSimulatorsComputer graphics (images)Performance index
The invention discloses an optical landing assisting system virtual display system and method, and the system specifically comprises a visual computer, a projector, a curtain, a global database, an ocean module, and an aircraft carrier model which is composed of an aircraft carrier deck, a ship island, and an optical landing assisting system. The global database, the ocean module and the aircraft carrier model run on a visual computer, the visual computer generates a real-time scene, and a virtual visual display picture is provided through the projector and the curtain. Limited by performance indexes of the projector, the optical landing assisting system in a visual display picture cannot perform visual identification, and an appropriate algorithm is adopted to perform proportional amplification on the optical landing assisting system, so that effective optical guide information can be provided.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Scene model sharing method and system, augmented reality device and storage medium

ActiveCN111158480ASolve more limited problemsAugmented reality deviceInput/output for user-computer interactionImage data processingComputer graphics (images)Engineering
The invention discloses a scene model sharing method and system, augmented reality equipment and a storage medium. The method comprises the steps of obtaining a shareable carrier model made by a creation user based on a first scene space; obtaining model source information according to the shareable carrier model, packaging the shareable carrier model and the model source information into a scenemodel, and uploading the scene model to a server; obtaining a second scene space; and under the condition that the goodness of fit between the second scene space and the first scene space is greater than a preset threshold, receiving the scene model and displaying the scene model to a browsing user, thereby solving the problem of more limitations in scene model sharing.
Owner:于斌

Saturn sky-space aircraft carrier model specially for national defense education for teenager

A Saturn sky-space aircraft carrier model specially for national defense education for teenagers comprises a combined solar panel warship body, a warship bench, a space unmanned fighter, a space unmanned early-warning plane, a warship bridge, a commanding tower, a robot driving and control cabin, a communication device, early-warning radar, a gun platform, a warship bench large-power laser gun, a taking-off runway indicating lamp, a tail baffle plate, a solar panel auxiliary plate, a power supply cabin, an acceleration cabin, a kinetic energy cabin, a particle beam emitter, a microwave emitter, a warship bow, a propeller, detection radar, first and second strategy missile emission units, first to fifth laser guns, and first to fourth booster engines. The Saturn sky-space aircraft carrier model is equipped with the space unmanned fighter, space weapons and antisatellite weapons to destroy satellites and communication of opposite sites, and is capable of effectively attacking space objects and ground objects in the sky-space field, thereby seizing the initiative of future space wars. Meanwhile, the model serves as a model for national defense education for teenagers, and helps to develop a new generation of national defense scientific research reserves.
Owner:FOSHAN SANSHUI DISTRICT XIWANG HUOJU EDUCATIONAL TECH CO LTD

Gridding launching trajectory planning method

ActiveCN112800532ASolve the puzzle of quick matchGeometric CADDesign optimisation/simulationIndex systemRocket
The invention provides a gridding launch trajectory planning method, which firstly proposes a thought of constructing a trajectory planning database with dynamic range adaptive capacity in advance according to a gridding method for a preset launch point location, and can preferentially select a launch trajectory for a task planning stage. In the actual task execution process, a launch trajectory is quickly matched and corrected to provide support; the thought of multi-element combined marshalling such as launching point location, launching trajectory and carrier model under multi-constraint conditions such as current task state, satellite constellation configuration, carrier rocket train loading condition, task deployment condition and satellite transit reconnaissance is proposed for the first time; the problem of quick matching of satellites, rockets, resources, environments and the like under the confrontation condition can be systematically solved; through empirical data accumulation, aiming at a launching trajectory evaluation problem, a launching trajectory evaluation index system is relatively completely proposed for the first time, and a support is provided for evaluating a preferred launching scheme and a backup launching plan.
Owner:NO 63921 UNIT OF PLA

Vector data watermark anti-counterfeiting method based on geographical semantics support

The invention discloses a vector data watermark anti-counterfeiting method based on geographical semantics support. The method comprises the steps as follows: creating a fidelity description knowledge rule base of vector geographical data based on geographical semantics, creating a watermark carrier model according to the fidelity description knowledge rule base, embedding watermark information based on a typical watermark algorithm, extracting the watermark information, and checking the watermark information. According to the method, the watermark information is embedded into an application-sensitive data characteristic set based on the fidelity description knowledge rule base of the geographical data, so that the watermark robustness is effectively improved; by the typical watermark algorithm, a watermark embedding model taking high fidelity as a solving target guarantees the usability and the invisibility of watermark version data and improves the practicality of the algorithm; through dimensionless treatment of a watermark carrier, a geometric attack is invalid for the watermark model; and a method for adopting repeated embedding in a watermark embedding process and electing in a detecting process effectively improves the resistance of the watermark model to a common watermark attack.
Owner:HUNAN UNIV OF SCI & TECH

Aircraft carrier wake flow numerical simulation method based on LBM-LES

The invention discloses an aircraft carrier wake flow numerical simulation method based on LBM-LES, and the method employs a numerical method combining LBM-LES with lattice Boltzmann and large eddy simulation, simulates wake flow wind fields at different wind speeds and wind direction angles for an unsimplified aircraft carrier model, and can simulate the impact on the wind field from various structures on an aircraft carrier, so that a simulation result is closer to a real wind field.
Owner:南京欧帕提亚信息科技有限公司

A separation and delivery centrifugal gravity compensation device and method

ActiveCN110398341BSolving the Trial Distortion ProblemAvoid destructionAerodynamic testingRotary stageElectric machinery
The invention relates to a centrifugal gravity compensation device for separation and delivery. The device includes a rotating table, a rotating arm, a rotating counterweight, and a rotating rod; the rotating table is vertically fixed on the ground; On the top of the rotating shaft of the rotating table motor, the rotating arm driven by the motor rotating shaft can rotate around the rotating table; one end of the rotating rod is sleeved in the rotating arm, and the other end extends along the rotating arm to the outside of the rotating arm, and the end is used to fix the loader model under test. A separation model is installed on the carrier model under test, and the installation attitude of the carrier model can be adjusted to ensure that the separation direction of the separation model is the direction of the extension line of the rotating rod; the rotating arm and the rotating rod rotate around the rotating table, and the centrifugal force generates separation acceleration. When the carrier model under test rotates to the separation point, release the separation model.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

A Trajectory Acquisition Test System for Simultaneous Separation and Simulation of Double Stored Objects

The invention provides a trajectory capture test system for simultaneous separation and simulation of double external objects, which belongs to the field of high-speed wind tunnel test technology and aircraft flight mechanics. The strut is fixedly connected to the half-arm angle-of-attack mechanism, the bomb-carrying base is connected to the wall of the wind tunnel test section through a vertical motion mechanism, and the parallel bottom plate is connected to the bomb-carrying base through a rotating shaft. Three-degree-of-freedom parallel mechanisms are respectively installed on the parallel bottom plate. The other end of the three-degree-of-freedom parallel mechanism is connected to the moving platform, and a rolling drive mechanism is provided inside the moving platform, and the moving platform is connected to the bomb-loading balance and the bomb-loading model through the bomb-loading support rod. The invention utilizes two bomb-loaded balances to measure the aerodynamic force and torque of the bomb-loaded models respectively, reversely solves the motion patterns of the two bomb-loaded models, controls the movement of each driving device, and realizes the multi-function of the two bomb-loaded models in the wind tunnel test section. The position and attitude changes of the degrees of freedom realize the simulation of the trajectory of the double-stored object model.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Special aircraft carrier model for adolescent national defense education

InactiveCN106781829AComprehensive Combat Defense CapabilityPromote enlightenment educationCosmonautic condition simulationsSimulatorsAirborne early warningNuclear power
A special aircraft carrier model for adolescent national defense education comprises a carrier body, a left auxiliary lane platform, a right auxiliary lane platform, a space fighter, a first unmanned airborne early warning aircraft, a main taxiway platform, an electromagnetic gun, a second electromagnetic gun, a third electromagnetic gun, a first particle beam weapon unit, a second particle beam weapon unit, a third particle beam weapon unit, a fourth particle beam weapon unit, a fifth particle beam weapon unit, a sixth particle beam weapon unit, a seventh particle beam weapon unit, an eighth particle beam weapon unit, a ninth particle beam weapon unit, a fourth electromagnetic gun, a tenth particle beam weapon unit, a bridge command set, a first small parasitic satellite launching unit, an afterdeck landing platform, a space bomber, a left nuclear power propeller, a right nuclear power propeller, a second small parasitic satellite launching unit and a second unmanned airborne early warning aircraft. The special aircraft carrier model has positive significances to promote establishment of enlighten education and training modes for adolescent national defense military talents in China.
Owner:FOSHAN SANSHUI DISTRICT XIWANG HUOJU EDUCATIONAL TECH CO LTD
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