Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
119 results about "Bidirectional coupling" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Interactive coupling numerical simulation method for molding temperature field of composite autoclave
ActiveCN107025366AImprove reliabilitySolve the problem of temperature field deviationDesign optimisation/simulationSpecial data processing applicationsHeat flowBidirectional coupling
An interactive coupling numerical simulation method for a molding temperature field of a composite autoclave comprises the following steps: building a heat flow calculation model to obtain a flow field and a fluid temperature field; building a curing molding calculation model to obtain a solid temperature field formed by a composite member and a molding die; performing temperature interaction based on iterative calculation of the heat flow calculation model and iterative calculation of the curing molding calculation model to realize temperature coupling between a fluid and a solid. According to the interactive coupling numerical simulation method, impacts on an airflow field from a die temperature field and a member temperature field are taken into consideration, iterative-step-based bidirectional coupling analysis is adopted, data interaction between the solid temperature field and the airflow field is arranged in each iterative step, and the strong coupling function between the solid temperature field and the airflow field is drawn into consideration, so that the problem of deviation of the temperature field in the background art is effectively solved, the reliability of simulated results is improved, the simulation better conforms to the reality, and a foundation is laid for follow-up stress and strain analysis.
Owner:CENT SOUTH UNIV
Radio frequency transmitting circuit, bidirectional coupler and directional coupler
ActiveCN105743519AAdjust input impedanceSimple structureTransmitters monitoringBidirectional couplingImpedance matching
Owner:RDA MICROELECTRONICS SHANGHAICO LTD
Random optimization method of power-gas integrated energy system
InactiveCN108960479AIncrease flexibilityForecastingCharacter and pattern recognitionIntegrated energy systemElectric power system
The invention discloses a random optimization method of power-gas integrated energy system. The method comprises that the power-gas integrated energy system is established, a p2G device and a combustion gas set realize bidirectional coupling and closed-loop operation of power and natural gas systems; a rapid search density clustering algorithm is used to carry out scene clustering on historical wind speed data to process a random characteristic of wind power output; an optimized operation model, considering the random characteristic of wind power output, of the power-gas integrated energy system is established and aimed at minimizing the operation cost of the system; and operation requirements of the power system, the natural gas system and a coupling node between the two systems are takeninto consideration to determine an operation constraint condition of the whole power-gas integrated energy system. The random characteristic of wind power output is considered, the P2G device is introduced to improve the operational flexibility of the power system and the natural gas system, and a new approach is provided for power generation via intermittently renewable energy as absorptive windpower.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +2
Method for predicting transient fluid-solid coupling characteristic of centrifugal pump rotor
ActiveCN102913464AFlexible choicePrediction results are crediblePump controlNon-positive displacement fluid enginesStructural deformationElement model
The invention discloses a method for predicting a numerical value of a transient fluid-solid coupling characteristic, and belongs to the technical field relevant to the mechanical flow induced vibration of pumps. The method mainly comprises the following three steps: calculating the transient fluid-solid coupling of an one-way and a bidirectional total fluid fields; measuring and processing the vibration data of a rotor; and comparing a predication result of the numerical value of the transient fluid-solid coupling with an experimental result. An coupling method can be selected flexibly. When the structure deformation quantity is not clear, the one-way coupling analysis is carried out firstly; if the predicted structure deformation has a big influence on the fluid field, the bidirectional coupling analysis is utilized. During the coupling calculation process, firstly, the transient fluid field calculation is carried out, and the load is added to a finite element model through interpolation calculation of an coupling interface so as to carry out a dynamic structural analysis. The convergence of data transmission of the coupling interface is judged, if the coupling calculation is not converged, fluid grids are recalculated according to the structural deformation, and then the coupling iteration for a time step is continued.
Owner:JIANGSU UNIV
Design method of distributed water resource allocation model
ActiveCN112765800AImprove simulation accuracyHandle non-overlapping issuesDesign optimisation/simulationConstraint-based CADWater resourcesEnvironmental engineering
The invention provides a design method of a distributed water resource allocation model. The design method comprises the following steps: S1, dividing calculation units; s2, designing a topological relation; s3, designing information distribution; s4, designing a configuration module; and S5, designing a configuration rule. By means of modularization and integration thoughts, bidirectional coupling of a water resource allocation model and a distributed hydrological model SWAT is achieved, and the invention has the functions of natural-artificial water circulation dynamic mutual feedback simulation, water resource system and reasonable allocation simulation and the like; the problems that a traditional water resource allocation model neglects the dynamic mutual feedback effect between natural water circulation and artificial lateral branch circulation and cannot respond to the influence of dynamic changes of production and confluence on water resource allocation in real time are solved, and the accuracy of water resource system simulation and regulation and control is improved. The invention can be used as a powerful supporting tool for regional natural-artificial water circulation mutual feedback simulation and fine management of a water resource system.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Octagonal interconnection network for linking processing nodes on an SOC device and method of operating same
An octagonal interconnection network for routing data packets. The interconnection network comprises: 1) eight switching circuits for transferring data packets with each other; 2) eight sequential data links bidirectionally coupling the eight switching circuits in sequence to thereby form an octagonal ring configuration; and 3) four crossing data links, wherein a first crossing data link bidirectionally couples a first switching circuit to a fifth switching circuit, a second crossing data link bidirectionally couples a second switching circuit to a sixth switching circuit, a third crossing data link bidirectionally couples a third switching circuit to a seventh switching circuit, and a fourth crossing data link bidirectionally couples a fourth switching circuit to an eighth switching circuit.
Owner:STMICROELECTRONICS SRL
Tree lightweight 3D reconstruction method based on enhanced PyrLK optical flow method
The invention discloses a tree lightweight 3D reconstruction method based on an enhanced PyrLK optical flow method. Firstly, for solving problems that a traditional pyramid LK optical flow method does not support rotation of characteristic points and does not have bidirectional coupling performance, enhancement of support affine transformation and reverse direction tracking on the PyrLK optical flow method is carried out, and an instance is given to explain robustness after enhancement; secondly, a complete tree framework is extracted through a three dimensional voxel flooding and linearity fitting method; lightweight at a designated degree on the tree framework is carried out based on combination of vertical and transverse limbs to meet Web lightweight application requirements; then an objective tree modeling reduction degree evaluation method is further provided; lastly, a model improvement method based on user interaction is further provided for acquiring a tree model which can completely meet user demands. Through the method, the 3D tree model having properties of better lightweight and higher accuracy can be acquired.
Owner:JILIN ANIMATION INST +1
Method of realizing bidirectional optical diode and device of realizing bidirectional optical diode
ActiveCN104882783AChange positionChange widthLaser output parameters controlRefractive indexBidirectional coupling
The present invention provides a method of realizing a bidirectional optical diode and a device of realizing the bidirectional optical diode. The scheme of the present invention is that: two beams of coupling fields which are irradiated oppositely and possess a certain frequency detuning are acted on a thermokalite metal atom steam chest, so that an atomic medium generates the periodic modulation to a refractive index of the probe light, the transmission characteristic of the bidirectional incident probe light is operated and controlled effectively, and a bidirectional optical diode function possessing certain frequency interval and frequency width is realized. A frequency interval depends on the frequency detuning difference between the bidirectional coupling fields, and a frequency width depends on a Doppler effect caused by the random motion of hot atoms. Meanwhile, a pair of coherent pumping fields are introduced, the bidirectional transmission efficiency of an optical diode can be improved effectively, and an isolation ratio is not influenced. The device involved in the present invention is easy to miniaturize and integrate, can form a practical light quantum device, and can be widely used in the research fields, such as the multichannel quantum state storage, the quantum information storage, such as an tunable all-optical control optical switch, an optical reflector, etc., the quantum relay network, etc.
Owner:北京瓦科光电科技有限公司
Atmosphere-sea wave coupling system based on pipeline communication and operation method of atmosphere-sea wave coupling system
PendingCN109558612AImprove the simulation effectImprove the level of forecastDesign optimisation/simulationSpecial data processing applicationsSea wavesThird generation
The invention discloses an atmosphere-sea wave coupling system based on pipeline communication. The atmospheric mode is WRFV3, the sea wave mode is WW3, and the WW3 mode only exchanges data with the surface layer module in the WRFV3 mode. The WRFV3 mode drives the WW3 mode through a sea surface 10m wind field, and the WRFV3 mode provides environment variables of an atmosphere bottom layer, and theWW3 mode simulates the wave state of the sea surface, and feeds back the wave age parameter to the WRFV3 mode. According to the present invention, the bidirectional coupling is carried out on the medium-scale atmosphere mode WRFV3 and the third-generation sea wave mode WW3 by utilizing pipeline communication in the IPC technology of the Linux operating system. According to the technical scheme, the system reflects the dynamic coupling process and the thermal coupling process at the same time, the simulation effect of the coupling mode is improved, better transportability and expandability areachieved, and the forecasting level of the medium-scale atmospheric mode on the typhoon path and strength is effectively improved. The invention also discloses an operation method of the atmosphere-sea wave coupling system based on pipeline communication.
Owner:CETC OCEAN INFORMATION CO LTD
Electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling
ActiveCN109583141AImprove solution efficiencyGuaranteed global optimalityConstraint-based CADSpecial data processing applicationsNonlinear modelElectric power system
The invention relates to an electricity-gas interconnection system unit combination linear model and system considering electricity-to-gas coupling. According to the electricity-gas interconnection system, bidirectional coupling of the electricity-to-gas conversion technology and the gas turbine is considered, the unit combination problem of the gas interconnection system is studied, the lowest comprehensive operation cost of the whole system serves as the target, multiple safety constraints of an electric power system and a natural gas system are considered, and an electricity-gas interconnection system unit combination model is established and linearized to obtain a linear model. Through simulation calculation, the existing nonlinear model and the linear model are compared, the solving efficiency of the nonlinear model and the linear model is compared, meanwhile, the system operation cost and the operation state under the scenes of considering electricity-to-gas and not considering electricity-to-gas and electricity-to-gas are analyzed, and the result shows that the linear model improves the combination solving efficiency of the electricity-gas interconnection system unit, and the application of electricity-to-gas also helps to improve the economical efficiency of the electricity-gas hybrid connection system.
Owner:JIANGSU ELECTRIC POWER CO +2
Bidirectional coupling device with same or different transmission characteristics
InactiveCN101618678ADynamo-electric brakes/clutchesFriction clutchesBidirectional transmissionEngineering
The invention relates to a bidirectional coupling device with same or different transmission characteristics and provides a transmission device part with same or different transmission characteristics and wide application range, in particular to a special bidirectional rotary transmission coupler with bidirectional transmission rotary kinetic energy of at least one first output / input end and at least one second output / input end. A transmission characteristic which can be used as a continuous rotary rotation difference and presents a special or adjustable flexibility value or toque can exist between the first output / input end and the second output / input end driven by the first output / input end, and another transmission characteristic which can be used as a continuous rotary rotation difference and presents a special or adjustable flexibility value or toque or a rigid transmission characteristic without the rotation difference can be selected as required to exist between the second output / input end and the first output / input end driven by the second output / input end. The coupling device is arranged at the output end of a rotary power source, an input side of an unstable impact load, between the rotary power source and a ballistic flywheel or a damping flywheel, between the ballistic flywheel or the damping flywheel and the load or used for transmitting the rotary kinetic energy of other machinery.
Owner:杨泰和
Coupling-enhanced surface etched gratings
ActiveUS20080069496A1Enhanced couplingIncrease overlapOptical wave guidanceOptical resonator shape and constructionGratingRefractive index
The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has a sequence of the periodic parallel segmented trenches etched from its top surface, such that the segments of intact material having higher refractive index than that in the surrounding segments of periodic trenches form the effective ridges which confine the optical field in and around these ridges, on one hand, and provide bidirectional coupling for the confined modes experiencing Bragg reflection from the segments of the periodic trenches, on the other. The invention discloses the designs of the multiple effective ridge laterally coupled surface-etched grating waveguide structures, which enhances the coupling efficiency as compared to a conventional single effective ridge grating design because of an intended dilution of the lateral confinement caused by the multiple effective ridges, resulting in an increase of the optical mode's overlap with the surface etched grating formed everywhere outside the effective ridges.
Owner:ONECHIP PHOTONICS
Bidirectional coupling device with variable transmission characteristics
ActiveUS20060032322A1Dynamo-electric brakes/clutchesMotor/generator/converter stoppersSoftware engineeringBidirectional coupling
A bidirectional flexible coupling device with variable transmission characteristics including one or multiple first input / out end and one or multiple second input / out end, indicating the transmission of specific or controllable flexibility or torque value when the first input / output end drives the second input / output end for transmission; and according to operation requirements, the transmission may be of specific or controllable flexibility or torque value or of rigid without revolution difference when the second input / output end drives the first input / output end.
Owner:YANG TAI HER
Atmosphere, land surface and hydrology bidirectional coupling method
ActiveCN111460686AImprove the ability of production flow calculationTwo-way coupling is convenientClimate change adaptationDesign optimisation/simulationHydrometryWater storage
The invention relates to an atmosphere, land surface and hydrology bidirectional coupling method which comprises the following steps: step 1, improving runoff production calculation on the basis of basin water storage capacity discretization; 2, determining a coupling scale, and processing topographic data; 3, determining a coupling variable and formulating a bidirectional feedback mechanism; 4, carrying out confluence calculation and flood forecasting. According to the method, the simulation of the land-gas coupling system on the water circulation process is perfected, the precision of land-gas coupling flood forecasting is improved, and reliable technical support is provided for flood disaster prevention of the drainage basin.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Bidirectional coupling device with same or different transmission characteristics
InactiveCN101618679ADynamo-electric brakes/clutchesFriction clutchesBidirectional transmissionBidirectional coupling
The invention relates to a bidirectional coupling device with same or different transmission characteristics and aims to provide a transmission device part with same or different transmission characteristics and wide range of application, in particular a special bidirectional rotary transmission coupler with bidirectional transmission rotary kinetic energy of at least one first output / input end and at least one second output / input end. A transmission characteristic which can be used as a continuous rotary rotation difference and presents a special or adjustable flexibility value or toque can exist between the first output / input end and the second output / input end driven by the first output / input end, and another transmission characteristic which can be used as a continuous rotary rotation difference and presents a special or adjustable flexibility value or toque or a rigid transmission characteristic without the rotation difference can be selected as required to exist between the second output / input end and the first output / input end driven by the second output / input end. The coupling device is arranged at the output end of a rotary power source, an input side of an unstable impact load, between the rotary power source and a ballistic flywheel or a damping flywheel, between the ballistic flywheel or the damping flywheel and the load or for transmitting the rotary kinetic energy of other machines.
Owner:杨泰和
Coupling-enhanced surface etched gratings
ActiveUS7609919B2Enhanced couplingIncrease overlapOptical wave guidanceOptical resonator shape and constructionGratingRefractive index
Owner:ONECHIP PHOTONICS
Two-way coupling apparatus and method
A centrifugally actuated coupling apparatus having an internal hub, an annular rotatable external hub coaxially disposed about the internal hub, and a locking element. The internal hub is rotatable about an axis, and includes an outer circumferential surface and a first recess formed on the outer surface. The external hub includes an inner circumferential surface and at least one circumferentially spaced second recess formed on the inner surface. The locking element includes a pivot end and a contact end. The pivot end is pivotally retained by the internal hub, and the contact end movably contacts the first recess. The contact end is pivotable radially outwardly by centrifugal force into engagement with one of the second recesses in response to rotation of the internal hub in a forward direction with respect to the external hub.
Owner:HONDA MOTOR CO LTD
Vector network measuring device and measuring method thereof
ActiveCN108627696AEasy to operateGet vector featuresVoltage-current phase angleFrequency measurement arrangementFrequency spectrumSpectrum analyzer
The invention discloses a vector network measuring device and a vector network measuring method thereof. Since a scanning signal generating module and a bidirectional coupler in the vector network measuring device are conventional functional devices, functions of the scanning signal generating module, a spectrum receiving channel and an IQ analysis module can be realized by means of a spectrum analyzer, so that the vector network measuring device has the advantages of simple structure and low development cost. The vector network measuring method is implemented by means of the vector network measuring device, the vector network measuring method is used for completing the signal transmission, reception and analysis processes, can acquire vector features of a measured vector network, and canachieve the measurement effect equivalent to that of an existing vector network analyzer.
Owner:SHENZHEN CITY SIGLENT TECH
Bidirectional coupling detector and method based on rectangular waveguide
ActiveCN110718734AHighly integratedGuaranteed assembly accuracyCoupling devicesMicrowaveSoftware engineering
The invention discloses a bidirectional coupling detector and method based on a rectangular waveguide, and relates to the technical field of bidirectional coupling detectors. The bidirectional coupling detector comprises a detector which comprises a microwave circuit, and the bidirectional coupling detector also comprises a bidirectional waveguide coupler. The bidirectional waveguide coupler comprises a main cavity, the main cavity is provided with a main path straight-through waveguide, and the two ends of the main path straight-through waveguide are an input waveguide and an output waveguiderespectively. Coupling branches are arranged on the two sides of the main path straight-through waveguide. Each coupling branch is connected with the detector. The detector also comprises side cavities. The side cavities are each provided with at least two waveguide grooves. Each waveguide groove and the coupling branch corresponding to the side cavity form a coupling port and an isolation port.The bidirectional coupling detector based on a rectangular waveguide is high in integration level. The bidirectional coupler and the detector are designed in a combined mode in structure. The size isreduced, the installation complexity is reduced, and the assembly precision of the assembly is guaranteed.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Coupling-degree-adjustable bidirectional coupler and adjusting method
ActiveCN113054392AAdapt to needsSame degree of couplingCoupling devicesResistive couplingSoftware engineering
The invention provides a coupling-degree-adjustable bidirectional coupler which comprises a main microstrip line and an auxiliary microstrip line which are parallel to each other, wherein one end of the main microstrip line is an input end, the other end of the main microstrip line is a straight-through end, the coupling microstrip line is perpendicular to the auxiliary microstrip line, one end of the coupling microstrip line is connected to the midpoint of the auxiliary microstrip line, and the other end of the coupling microstrip line forms a coupling end; two resistors a and b are arranged in the coupling microstrip line; and one side of the coupling microstrip line is provided with an impedance open-circuit line. Compared with a traditional structure, the symmetrical structure ensures that the same coupling degree can be realized at a coupling end regardless of the flow direction of signals; meanwhile, the coupling degree can be conveniently adjusted within a certain range through the design mode of the adjusting resistor, so that the requirements of different users are met, the coupler can be widely applied to transmitting and receiving circuits, meanwhile, flexible adjustment can be carried out, and the application range of the coupler is widened.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
Integrated EMI (electromagnetic interference) filter for optimizing grounded winding layout to improve noise suppression performance
InactiveCN103236824AEliminate equivalent parallel capacitanceSimple structureImpedence networksCapacitanceBidirectional coupling
The invention discloses integrated EMI (electromagnetic interference) filter for optimizing grounded winding layout to improve noise suppression performance. The integrated EMI filter comprises an E-type magnetic core, a first I-type magnetic core, a second I-type magnetic core and two common-mode winding units of the same structure and symmetrically disposed on the two sides of the second I-type magnetic core. On the basis of the research of the characteristics of component integration and various coupling effects among the components as well as by optimizing the grounded winding layout of the integrated EMI filter, the integrated EMI filter with a small structure, complexity and processing difficulty is capable of effectively eliminating equivalent parallel capacitance of a common-mode inductor. By high-frequency performance comparison of reverse coupling, forward coupling and bidirectional coupling, the conclusion that the bidirectional coupling grounded winding structure can improve high-frequency common-mode noise suppression capacity to the greatest extent is obtained. At the mean time, an equivalent circuit is introduced for the quantitative analysis of a design process, and an accurate field simulation software is used for simulating filtering effects so as to finish the processing and test of the integrated EMI filter.
Owner:SOUTH CHINA UNIV OF TECH
Bi-directional coupler
ActiveUS10714806B2Easily achieves bi-directionalityEasilyMultiple-port networksCoupling devicesElectromagnetic couplingSoftware engineering
A bi-directional coupler includes a first individual directional coupler and a second individual directional coupler, which are individual electronic components having mutually equivalent circuit configurations. Each of the first and second individual directional couplers includes: a first terminal; a second terminal; a third terminal; a fourth terminal; a main line connecting the first terminal and the second terminal; and a subline connecting the third terminal and the fourth terminal. The subline includes first and second coupling line sections configured to be electromagnetically coupled to the main line, and a matching section provided between the first and second coupling line sections. The second terminal of the second individual directional coupler is electrically connected to the second terminal of the first individual directional coupler.
Owner:TDK CORPARATION
Symbolized permutation transfer entropy-based epileptic electroencephalogram bidirectional coupling analysis method
ActiveCN112244870AInnovate in analysis technology, and propose a new EEG analysis method that is comprehensive and detailedThe analysis method is comprehensive and detailedDiagnostic recording/measuringSensorsEeg synchronizationAlgorithm
The invention discloses a symbolized permutation transfer entropy-based epileptic electroencephalogram bidirectional coupling analysis method. The epileptic electroencephalogram bidirectional couplinganalysis method comprises the following specific steps of firstly extracting coupling features of multi-channel epileptic electroencephalogram signals by adopting a method of multi-scale symbolized permutation transfer entropy, and selecting a proper scale and frequency band to construct an electroencephalogram synchronous matrix; and secondly, screening important channels during epileptic seizure based on a significance analysis method, and performing inter-channel bidirectional coupling analysis. In order to further research the overall synchronous relationship of the whole cerebral cortexarea, the multi-channel electroencephalogram signals are divided into 4 brain areas by the epileptic electroencephalogram bidirectional coupling analysis method, and synchronism analysis of multi-channel electroencephalogram signals is performed by using an S estimator under frequency bands of delta, theta, alpha and beta. The epileptic electroencephalogram bidirectional coupling analysis method improves the features of bidirectional coupling and synchronism of the epileptic electroencephalogram signals, and a more scientific and reasonable analysis method is made.
Owner:HANGZHOU DIANZI UNIV
Distributed direct two-way coupling method for earth surface and pipe network
ActiveCN112711825AHigh simulationAssessing inundation riskGeometric CADDesign optimisation/simulationHydrometryRainfall runoff
The invention provides an earth surface and pipe network distributed direct two-way coupling method, which comprises the steps of collecting hydrodynamic data of surface hydrology, and further comprises the following steps: generating an earth surface model and a pipe network model according to the hydrodynamic data of the surface hydrology, the earth surface model being an earth surface distributed hydrodynamic model; and on the basis of the surface model and the pipe network model, a coupling mode between the surface model and the pipe network model is constructed according to the actual composition of the urban drainage pipe network and the data coverage situation, and the coupling mode at least comprises physical coupling and concept coupling. The invention provides a novel distributed direct two-way coupling mode, namely a coupling mode of rainfall-earth surface-pipe network (Sewer), under the mode, the earth surface adopts a distributed hydrodynamic model, rainfall directly acts on earth surface grids, rainfall runoff generation and confluence and accumulated water flooding are calculated based on the unified earth surface grids, and therefore, the accuracy of the rainfall runoff generation and confluence and accumulated water flooding can be improved. Meanwhile, the surface model and the pipe network model are bidirectionally coupled.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Fluid-solid coupling method for opening process of pressure release valve of pressure stabilizer
ActiveCN111859824ARealize forceRealize the calculation of working fluid distributionDesign optimisation/simulationSpecial data processing applicationsSolid regionBidirectional coupling
The invention discloses a fluid-solid coupling method for the opening process of a pressure release valve of a pressure stabilizer. The fluid-solid coupling method comprises the following steps: establishing a simplified geometric model of a safety valve of the pressure stabilizer; respectively carrying out mesh generation on the solid region and the fluid region of the safety valve of the voltagestabilizer to obtain a mesh model of each part; controlling the stress state of the valve to be changed from a closed state to an open state through a user-defined function; carrying out steam flow characteristic calculation in the pressure stabilizer pressure release valve fluid domain grid model range, and carrying out solid mechanical vibration behavior calculation in the solid domain grid model range; achieving bidirectional coupling calculation of the same time step length of the mechanical behavior and the grid displacement through a fluid-solid coupling platform; and adopting a fluid-solid coupling platform is adopted to achieve dynamic flow field analysis inside the pressure release valve of the pressure stabilizer and mechanical behavior analysis of a solid region.
Owner:XI AN JIAOTONG UNIV
Bidirectional coupling device with variable transmission characteristics
ActiveUS7459816B2Dynamo-electric brakes/clutchesMotor/generator/converter stoppersBidirectional couplingControl theory
A bidirectional flexible coupling device with variable transmission characteristics including one or multiple first input / out end and one or multiple second input / out end, indicating the transmission of specific or controllable flexibility or torque value when the first input / output end drives the second input / output end for transmission; and according to operation requirements, the transmission may be of specific or controllable flexibility or torque value or of rigid without revolution difference when the second input / output end drives the first input / output end.
Owner:YANG TAI HER
Ventilator blade fluid-solid coupling model
ActiveCN110032769AAchieve two-way couplingDesign optimisation/simulationSpecial data processing applicationsDynamic modelsBidirectional coupling
The invention discloses a ventilator blade fluid-solid coupling numerical analysis method, which comprises the following steps of respectively establishing the dynamic models and basic equations of afluid domain and a solid domain, the boundary conditions and a turbulence model, and substituting the equations into a fluid-solid coupling model flow chart. The vibration of the solid on the couplingboundary causes the movement of the fluid, and the pressure during the movement of the fluid reacts on the solid to form a coupling effect between the fluid and the solid, thereby establishing a bidirectional coupling model of the blade fluid-solid coupling problem. Compared with an existing blade fluid-solid coupling model, the blade fluid-solid coupling model is closer to reality, the effect offluid is not purely treated into the damping effect, but the fluid domain and the solid domain are regarded as a complete engineering problem.
Owner:BEIJING UNIV OF TECH
Method for simulating and calculating heat transfer value of transformer based on three-dimensional model
PendingCN113850001AReduce no-load lossImprove overload capacityDesign optimisation/simulationSpecial data processing applicationsDistribution transformerProcess engineering
The invention provides a method for simulating and calculating a heat transfer value of a transformer based on a three-dimensional model. The method comprises the steps of determining a design object of a transformer; establishing a three-dimensional model; verifying the rationality and accuracy of the three-dimensional model; using the design object to replace a material at a corresponding position in the transformer; fitting a physical property parameter change rule into a mathematical function; setting boundary conditions of a three-dimensional model region, and carrying out bidirectional coupling calculation to obtain temperature rise characteristics, load capacity and hot spot sizes of the transformer adopting the design object; and analyzing a simulation result, and optimizing the transformer. Temperature distribution, temperature rise calculation and winding hot spot prediction in the design object material transformer are researched by comparing the three-dimensional model. The temperature rise characteristic, the hot spot size and the overload capacity of the transformer of the design object material are analyzed, and reference data are provided for subsequent design and manufacturing of an energy economical transformer. No-load loss of the transformer is optimized, temperature rise is reduced, overload capacity of the distribution transformer is improved, and service life of the distribution transformer is prolonged.
Owner:GUANGXI UNIV
Optical power meter for testing passive optical network
ActiveCN101839764ASolving Power MeasurementsEasy to installPhotometry using reference valuePersonal identification numberHigh isolation
The invention relates to an optical power meter for testing a passive optical network, comprising a bidirectional coupler, wherein the bidirectional coupler splits an uplink signal and then is directly connected to a 1310 nm burst module; in addition, the bidirectional coupler splits the wavelength by using a WDM (Wavelength Division Multiplex) with high isolation after splitting a downlink signal and then is respectively connected to a 1490 nm module and a 1550 nm module which are connected with an MCU (Microprogrammed Control Unit) through an A / D conversion module; the 1310 nm burst module is converted into proportional current by using a high-speed optical detector PIN (Personal identification Number) tube and is converted into a voltage signal by using a preposed amplifying circuit formed by a preposed high-speed wideband amplifier; the voltage signal is subjected to signal shaping and is respectively connected with a voltage sampling circuit and a comparison circuit; the comparison circuit is connected with the MCU through a time delay circuit and a trigger circuit; one path of the voltage sampling circuit is connected with the MCU through the A / D conversion module; and the other path of the voltage sampling circuit is connected with the MCU through the trigger circuit. The invention has the benefits of measuring a burst 1310 nm signal, thereby solving the problem of power measurement in the installation process of the PON (Passive Optical Network).
Owner:上海光家仪器设备有限公司 +1
Flow thermosetting coupling calculation method based on physical neural network
PendingCN114329319ARealize two-way coupled computingAccurate physical field informationGeometric CADDesign optimisation/simulationTheoretical computer sciencePhysical neural network
The invention discloses a fluid-thermosetting coupling calculation method based on a physical neural network, relates to the technical field of fluid-thermosetting coupling mechanical application, and solves the problems that an existing method needs to consume a large amount of time and calculation resources, and there is no solution for complex coupling problems such as fluid-thermosetting coupling. One scheme is a scheme of separately establishing neural networks for a fluid domain and a solid domain and performing coupling calculation by adopting a continuity condition of an interface, and is called as a partition coupling calculation method; and the second scheme is a whole-field calculation scheme for establishing a set of neural network for a fluid domain and a solid domain to solve, and is called as a whole-field coupling calculation method. According to the method, discretization of a control equation is not needed, spatial discretization is carried out by replacing grid division with spatial sampling, and bidirectional coupling calculation of fluid mechanics, heat transfer theory and elastic mechanics can be realized. Therefore, more accurate physical field information of a solid domain and a fluid domain can be obtained.
Owner:BEIHANG UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com