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546 results about "Analogue computation" patented technology
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Autonomous lane-changing decision making system for pilotless automobile
ActiveCN105015545AStrong targetingSimple decision makingExternal condition input parametersDriver input parametersAnalogue computationDecision system
The invention discloses an autonomous lane-changing decision making system for a pilotless automobile. First, through an information collecting module, environment information such as a lane line, an obstacle, speeds of surrounding interactive vehicles, distances between the surrounding interactive vehicles and the pilotless automobile and so on is obtained; the obtained information is transmitted to a main control module; the main control module is used for analyzing the received information, judging whether a lane-changing condition is satisfied or not, carrying out analog computation on the received information to obtain a lane-changing scheme and transmitting the lane-changing scheme to a control executing module; and then a vehicle controller is used for controlling a steering direction, speed and so on of the pilotless automobile according to a decision signal so that the running lane of the pilotless automobile is changed. In the lane-changing process, the information collecting module is required to monitor the environment and the surrounding vehicles in real time; meanwhile, the operation status of the pilotless automobile also needs to be fed back to the main controller in real time so that the pilotless automobile can adjust decision information in time in case of an emergency; therefore, a purpose that the running lane of the pilotless automobile is autonomously changed is safely and effectively realized.
Owner:INNER MONGOLIA MAIKU INTELLIGENT VEHICLE TECH
Method for Reading and Writing Data Wirelessly from Simulated Munitions
InactiveUS20090053678A1Ammunition projectilesMultiplex system selection arrangementsElectricityTransceiver
A weapon simulation system includes a simulated weapon and simulated munition, with the simulated weapon being in electrical communication with a primary simulation computer and an instructor computing station. The simulated munition includes an RFID tag installed therein, with the RFID tag having information about the particular simulated munition. When the simulated munition is placed in an insert in the simulated weapon, an RFID transceiver in the simulated weapon will read the information from the RFID tag using an antenna, and further transmit the identification information of the simulated munition to a weapon controller. The weapon controller is further in electrical communication with a primary simulation computer generating a simulation, which is in electrical communication with an instructor computer.
Owner:MEGGITT TRAINING SYST
Allocation of processor resources in an emulated computing environment
InactiveUS20060294524A1Multiprogramming arrangementsSoftware simulation/interpretation/emulationAnalogue computationProportional share
In an emulated computing environment, a method is provided for allocating resources of the host computer system among multiple virtual machines resident on the host computer system. On the basis of the proportional weight of each virtual machine, a proportional share of resources is allocated for each virtual machine. If, for a particular virtual machine, the calculated share is less than a reserved minimum share, the virtual machine is allocated its reserved minimum share as its share of processor resources. An emulation program modulates the access of each virtual machine to the resources of the host computer system.
Owner:MICROSOFT TECH LICENSING LLC
Systems and methods for performing software performance estimations
InactiveUS7702499B1Error detection/correctionSoftware simulation/interpretation/emulationParallel computingSource code
Systems and methods are provided for annotating software with performance information. The computer code is compiled into assembler code, the assembler code is translated into a simulation model, expressed in assembler-level source code. The simulation model is annotated with information for calculating various performance parameters of the software, such as timing information, or resource usage information. The simulation model is then re-compiled and executed on a simulator, optionally including a hardware simulation model, and the performance information is computed from the simulation.
Owner:CADENCE DESIGN SYST INC
Preparation technology of nanometer multi-component alloy co-cementation anti-corrosive coating
InactiveCN101280410AGood processing conditionsReduce consumptionSolid state diffusion coatingWear resistantActive agent
The invention relates to a preparing process of a nanometer complex alloy co-permeation anticorrosion coating layer, which belongs to the technical field of the metal surface modified or alloying treatment. The preparing process comprises computer analog computation, preliminary treatment of steel members, complex configuration of co-permeation agent, energizing agent, active agent and filling agent, co-permeation processing of steel members and after-treatment of steel members. The preparing process has the advantages that firstly, the computer simulation is adopted to calculate optimal machining conditions, and to reduce the various consumption under the conditions; secondly, partial zinc powder is replaced by aluminum powder as the co-permeation agent, the hardness and the wear resistant property of a co-permeation layer are improved, and the co-permeation cost is reduced; thirdly, nanometer mixed rare earth oxide with low price and good effect is adopted as the energizing agent; fourthly, the co-permeation layer contains no heavy metal cadmium, is environmentally protective and is free from pollution; fifthly, the preparing process has no hydrogen embitterment damage, the processing temperature is low, the time is short, the hydrogen embitterment damage occurring on the co-permeation layer is avoided, and the energy consumption is reduced simultaneously.
Owner:天津市钰源地紧固件有限公司
System and method for using computational fluid mechanics to simulate and calculate fractional blood flow reserve
ActiveCN106650267AMedical simulationSpecial data processing applicationsGeometric modelingComputer science
The invention provides a system and method for using computational fluid mechanics to simulate and calculate fractional blood flow reserve. The system comprises a vascular tree model generation module, a computational grid generation module, a boundary condition setting module, an attribute setting module, a solver and an aftertreatment module, wherein the vascular tree model generation module acquires a medical image, executes segmentation and reestablishes a geometric model of a vascular tree of an individual, the computational grid generation module generates a computational grid for the geometric model and establishes a CFD model of the vascular tree, the boundary condition setting module sets corresponding inlet and outlet boundary conditions for the CFD model of the vascular tree, the attribute setting module sets the physical property and a flow equation of blood, the solver seeks solutions on the CFD model of the vascular tree based on the inlet and outlet boundary conditions so as to obtain fluid parameters around the vascular tree, the set physical property and the flow equation, and the aftertreatment module conducts aftertreatment on the fluid parameters so as to obtain the fractional blood flow reserve, and both the inlet boundary condition and outlet boundary condition have individual specificity. According to the system and method for using computational fluid mechanics to simulate and calculate the fractional blood flow reserve, the accuracy of a simulation result is guaranteed, and the calculation time acceptable to clinics can be achieved at the same time.
Owner:BEIJING CURACLOUD TECH CO LTD
Optimization design method of cooling system of engine
ActiveCN103136423AGuide designGuide developmentSpecial data processing applicationsThermodynamicsAnalogue computation
The invention provides an optimization design method of a cooling system of an engine. The optimization design method of the cooling system of the engine utilizes a one-dimensional fluid simulation technology to perform flow analysis and comprises the following steps of (1) collecting related data of components of the cooling system and performing parameterization processing; (2) establishing a one-dimensional module; (3) performing analog computation under different working conditions; and (4) analyzing a calculation result and performing a conventional optimization design on the cooling system according to the calculation result. Pressure distribution, flow distribution, flow resistance of every component and temperature variation of cooling liquid under warming-up working conditions of the cooling system are simulated at the beginning of the design to obtain optimum matching parameters of the cooling system of the engine, so that the optimization design method of the cooling system of the engine has the advantages of being capable of well guiding the design and development of the cooling system; accordingly improving the development efficiency; and saving the test costs.
Owner:CHERY AUTOMOBILE CO LTD
Method for simulating dendritic crystal growth of laser welding pool
InactiveCN107309543ADeepen understanding of evolution mechanismDesign optimisation/simulationSpecial data processing applicationsMelting tankCoupling
The invention discloses a method for simulating dendritic crystal growth of a laser welding pool. The method is characterized by comprising the following steps of 1, simplifying conditions and initializing a microcosmic model; 2, establishing a macroscopic model of the temperature gradient and propulsion speed; 3, establishing a phase-field model of dendritic crystal growth; 4, carrying out macroscopic-microcosmic coupling calculation; and 5, carrying out analog computation and exporting results. According to the method, the simulation of the dendritic crystal growth and evolution in the solidification process of the laser welding pool can be quantitatively carried out, the dendritic crystal growth process in the solidification process of the laser welding pool can be dynamically reproduced, so that deepening understanding of the microstructure evolution mechanism of the laser welding pool is facilitated, and a foundation is laid for researching the solidification process of the laser welding pool and optimizing the welding process.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Method for determining separate peak among chromatographic overlapping peaks
InactiveCN1632568AIncrease human interventionImprove Quantitative AccuracyComponent separationSpecial data processing applicationsAnalogue computationTower
This invention discloses a method to determine the single peak in the chromatogram-overlapped peak, which belongs to improvement technique of the chromatogram ration and shape analysis. The method is characterized by comprising the following steps: matching and iterating and analogue computation, wherein, the iterate process comprises the identification of the single peak shape, single peak computation parameter determination and the single peak got from first iteration by tower theory; the said analogue computation comprises the multiple process to get the single peak by minus of the overlapped peaks till get the set accuracy of the single peak.
Owner:TIANJIN UNIV
Reactor primary loop coolant flow field, temperature field and stress field coupling calculation method
ActiveCN111261232ASafe and stable operationSolve coupled numerical simulation calculation problemsNuclear energy generationChemical processes analysis/designAnalogue computationCoolant flow
The invention discloses a reactor primary loop coolant flow field, temperature field and stress field coupling calculation method. The method comprises the following steps: 1) constructing a high-temperature gas cooled reactor core model and a steam generator model with the same size as actual equipment; 2) establishing a computational domain 1, a computational domain 2 and a computational domain3; 3) setting equipment materials and fluid domains in the computational domain 1, the computational domain 2 and the computational domain 3; 4) setting areas and boundary layers of a flow field, a temperature field and a stress field; 5) meshing the flow field, the temperature field and the stress field; 6) adopting a k-epsilon turbulence model in the computational domain 1 and the computationaldomain 3, and adopting a porous medium model in the computational domain 2; 7) obtaining flow field, temperature field and stress field distribution results of the computational domain 1, the computational domain 2 and the computational domain 3, and 8) obtaining optimal operation parameter configuration of the high-temperature gas cooled reactor at different power levels. The method can realize coupling numerical simulation calculation of the coolant flow field, the temperature field and the stress field of a reactor primary loop.
Owner:XIAN THERMAL POWER RES INST CO LTD
Systems and methods for analog computing using a linear photonic processor
ActiveUS20210036783A1Exclusive-OR circuitsPower supply for data processingAnalogue computationVector element
Systems and methods for performing signed matrix operations using a linear photonic processor are provided. The linear photonic processor is formed as an array of first amplitude modulators and second amplitude modulators, the first amplitude modulators configured to encode elements of a vector into first optical signals and the second amplitude modulators configured to encode a product between the vector elements and matrix elements into second optical signals. An apparatus may be used to implement a signed value of an output of the linear processor. The linear photonic processor may be configured to perform matrix-vector and / or matrix-matrix operations.
Owner:LIGHTMATTER INC
Composite electrical cross arm and design method of structure thereof
ActiveCN101906895AMeet strength requirementsReduce structural weightTowersGlass fiberAnalogue computation
The invention relates to a composite electrical cross arm and a design method of a structure thereof, belonging to the design field of assorted structural parts of transmission poles. The electrical cross arm is of cylindrical solid structure and comprises an inner core layer, a middle layer and an outer layer from inside to outside in a radial direction. The middle layer is the base and is a composite hollow pipe, the core of the pipe is filled with foaming polyurethane material to form the inner core layer, and the outer surface of the pipe is wound with glass fiber polymer matrix composite material to form the outer layer. The design method comprises the steps of: carrying out solid modeling, meshing, load applying and analog computation by utilizing the operation order of an ANSYS and confirming the structure setting, optimization of outer winding thickness and direction angle of the cross arm so that the cross arm meet the requirements of a design safety coefficient value and deflection. The cross arm produced by the design method has the advantages of light weight, good insulation performance, convenient installation and high section bending resistance index, and can effectively improve a safety margin when being applied to an actual circuit, can reduce the cost and is beneficial for popularization and application.
Owner:北玻电力复合材料有限公司
Accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm
InactiveCN109928493ASustainable biological treatmentBiological water/sewage treatmentData acquisitionControl area
The invention relates to an accurate dissolved oxygen control and regulation method based on big data and evolutionary algorithm. The system comprises three subsystems: a ''simulation+model'' pretreatment system which uses historical data of a sewage plant to carry out process modeling; a ''feedforward+model+feedback'' control system and a ''big data+evolutionary algorithm'' verification system; operating parameters are obtained through the pretreatment system, a gas amount equilibrium steady state value is obtained through model calculation, each control area is accurately controlled according to the gas amount, the control system comprises a data acquisition module, a data processing module, a blower control module and a valve control module, the ''big data+evolutionary algorithm'' verification system uses data before and after operation to simulate, calculate and correct system parameters to improve the control stability. The system has the advantages of reasonable design, simple and convenient operation, reliable and stable performance, wide popularization and application, and the like.
Owner:北控水务(中国)投资有限公司
Method for highly fine three-dimensional modeling of complex earth surface
InactiveCN103150758ASimplify the modeling processImprove modeling efficiencySpecial data processing applications3D modellingAnalogue computationDesign software
Owner:HEBEI IRON & STEEL GRP MINING +2
Quick and high-precision numerical simulation method for two-dimensional magnetic field of strong magnetic body
InactiveCN108197389AThe method of splitting is simpleThe method of subdivision is flexibleDesign optimisation/simulationSpecial data processing applicationsMagnetic susceptibilityMagnetic measurements
The invention provides a quick and high-precision numerical simulation method for a two-dimensional magnetic field of a strong magnetic body. According to the method, through two-dimensional model expression of the strong magnetic body, Gaussian parameter design, calculation of the discrete offset wave number, weighting coefficient calculation of a wave number domain, calculation of magnetizationintensity, one-dimensional discrete Fourier inversion, magnetic abnormality calculation of a spatial domain, iteration convergence judgement and other steps, unification on efficiency and precision ofnumerical simulation of the two-dimensional magnetic field of the strong magnetic body is achieved. According to the method, the problems are solved that an existing numerical simulation method for the magnetic field of the strong magnetic body is low in calculation precision and cannot meet fine inversion imaging of large-scale strong magnetic measurement data, and the method helps to carry outresearch of two-dimensional magnetic susceptibility fine inversion imaging of the large-scale strong magnetic measurement data, man-machine interaction modeling and interpretation.
Owner:CENT SOUTH UNIV
Noninvasive portal vein hemodynamic parameter measuring method
InactiveCN104107039ASimple and fast operationImprove accuracyBlood flow measurementVeinPortal vein flow
The invention provides a noninvasive portal vein hemodynamic parameter measuring method which includes the steps of firstly, using a thin-section CT image to build a three-dimensional geometric model of a liver portal vein; secondly, using the finite element analyzing method of hydromechanics calculating software ANSYS to perform meshing on the geometric model and build a three-dimensional mathematic model; thirdly, calculating the hemodynamic parameter of the portal vein in an analog manner to obtain a speed and pressure distribution effect picture. The method is safe, noninvasive, simple to operate, visualized, quantized and high in accuracy, and the effective model is built for scientific researches and clinic services.
Owner:SHANGHAI TONGJI HOSPITAL
Conglomerate reservoir pore network model modeling method based on simplified digital core
ActiveCN111428321AHigh precisionSolve the problem of inaccurate structural representationGeometric CADMaterial analysis using wave/particle radiationSoil scienceAnalogue computation
The invention provides a conglomerate reservoir pore network model modeling method based on a simplified digital core, and the method comprises the steps of firstly building a multi-scale pore networkmodel based on the mercury injection test and CT test results of the core, so as to reserve the precision of a high-resolution pore network model, and enable the model to be stronger in capability ofrepresenting a larger-size pore throat; then according to the statistical consistency of the key parameters, a mesoscale pore network model is established, and the model not only can carry out pore-level digital seepage simulation, but also can greatly reduce the digital seepage simulation calculation amount; and finally, adding the gravel characteristic parameters into the macroscale sandstone basic model to establish a macroscale conglomerate model. Compared with the prior art, the method has the advantages that the problems of lack of centimeter-scale pore network modeling methods and inaccurate representation of the digital core technology on the conglomerate complex modal structure are solved, and the application of the digital core technology in guiding conglomerate oil reservoir development is expanded.
Owner:PETROCHINA CO LTD
System and method for remotely monitoring engineering machinery operating conditions
InactiveCN103064381AIncrease credibilityHigh feasibilityTotal factory controlProgramme total factory controlAnalogue computationData transformation
Disclosed are a system and a method for remotely monitoring engineering machinery operating conditions. The system comprises a data acquisition module. The data acquisition module is composed of an executive assembly, an operating assembly, a sensor and a frequency converter, wherein the executive assembly and the operating assembly are arranged on engineering machinery, and the sensor and the frequency converter are arranged on a controller part. The data acquisition module is connected with a data conversion and storage module. The data conversion and storage module, a data encryption and packing module, a data transmission module, a remote wireless network server, a data downloading module, a data decoding and decompression module, a data input module and a monitor terminal are sequentially connected. The invention further discloses the method for remotely monitoring the engineering machinery operating conditions by using of the system for the remotely monitoring the engineering machinery operating conditions. The system and the method for remotely monitoring the engineering machinery operating conditions have the advantages that feasibility is strong, reliability of analog computation results is high, internal operating conditions of the engineering machinery can be reflected close to actual conditions, equipment faults about to happen can be effectively and quickly forecast, and protective measures can be taken at any time.
Owner:昆山航天智能技术有限公司
Decision support system for managing ecological construction
The invention provides a decision support system for managing ecological construction in a county on one hand. The decision support system comprises a human-machine interactive interface module and a background control module, wherein the background control module comprises a decision module and a knowledge base module; the decision module comprises a synthesis body module, a simulation body module and a evaluation body module which are mutual coupling operation; the synthesis body module is used for allowing a user to select a decision problem, input a strategy variable value and query and store feedback contents and further driving the operation process of a model group of the simulation body; the simulation body module is used for carrying out analogue computation on parameters required for the decision problem and outputting parameter result to an evaluation body module; the evaluation body module is used for screening an evaluation result and an optimal strategy and feeding the evaluation result and the optimal strategy to the synthesis body module; and the evaluation result and the optimal strategy are output by the human-machine interactive interface module. The decision support system provided by the invention comprises a mathematical statistic module and a space analysis module as basic tool modules; and the invention provides a series of solutions for evaluating, simulating and predicting biological problems.
Owner:EAST CHINA NORMAL UNIV
Employing native routines instead of emulated routines in an application being emulated
InactiveUS20130096908A1Software simulation/interpretation/emulationMemory systemsProgramming languageAnalogue computation
Processing within an emulated computing environment is facilitated. Code used to implement system-provided (e.g., standard or frequently used) routines referenced in an application being emulated is native code available for the computing environment, rather than emulated code. Responsive to encountering a reference to a system-provided routine in the application being emulated, the processor is directed to native code, rather than emulated code, even though the application is being emulated.
Owner:IBM CORP
Fluid mechanics simulation method and device and storage medium
PendingCN111680456AAvoid the disadvantage of having to keep the size consistentImproving the Efficiency of Fluid Dynamics SimulationsDesign optimisation/simulationMacroscopic scaleAnalogue computation
The invention discloses a fluid mechanics simulation method and device and a storage medium, and the method comprises the steps: obtaining a flow field model, and generating a flow field grid; obtaining initial macroscopic information, boundary condition information and the number of execution processes which are set based on the flow field model; dividing the flow field grid to obtain a pluralityof subareas corresponding to the number of executed processes, and allocating a corresponding subarea to each process; calculating a particle distribution function corresponding to each grid unit ineach subarea by utilizing each process, and determining macroscopic information corresponding to the grid unit in each subarea according to the particle distribution function of the grid unit in eachsubarea; calculating a convergence value of the flow field according to the macroscopic information of the grid units in the subareas, and judging whether the flow field model meets a convergence condition or not according to the convergence value of the flow field; and aggregating the macroscopic information of the grid units in each sub-region and outputting the aggregated macroscopic information as a simulation result of the flow field model, thereby realizing simulation calculation of a large-scale complex flow field.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Graphene-based terahertz double-band wave absorber adjusting method
ActiveCN109411898AGuaranteed polarization insensitivitySimple structureAntennasElectrical conductorSilicon dioxide
The invention discloses a graphene-based terahertz double-band wave absorber adjusting method, belongs to the field of terahertz metamaterial wave absorption, and aims at realizing perfect absorptionin terahertz double-band and changing wave absorption bands through changing chemical potential of graphene. According to the method, a designed wave absorber unit comprises a layer of full-metal film(1), a layer of dielectric film (2) and a layer of patterned graphene (3) from bottom to top, wherein the three layers are mutually laminated; the metal film layer adopts a conductor of gold or silver; and the intermediate dielectric layer uses silicon dioxide. Analog computation is carried out through a finite element method, and a reflection spectrum of the structure is observed to realize perfect absorption in in terahertz double-band. The metasurface wave absorber has the advantages of being strong in absorption, insensitive in polarization, simple in structure and convenient to process;and due to the Fermi-level adjustability, the dynamic adjustability of resonant frequency of the wave absorber can be realized, and the requirements for application in the terahertz absorption aspectcan be satisfied.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Cloth animation generation method and device and computer readable storage medium
ActiveCN111028320AReduce simulation calculation timeAnimationImage generationAnalogue computationAnimation
The invention relates to a cloth animation generation method and device, a computer readable storage medium and computer equipment. The method comprises the steps of obtaining a physical grid of a cloth model of a virtual object; determining the coloring mark quantity of each grid vertex according to the cloth constraint of the physical grid; segmenting the physical grid into a plurality of sub-physical grids according to the coloring mark quantity of the grid vertex; rendering position coordinates of grid vertexes on the sub-physical grids are calculated in parallel; according to the rendering position coordinates of the grid vertexes on the physical grid, obtaining the position coordinates of the grid vertexes on the rendering grid; and generating a cloth animation of the virtual objectaccording to the position coordinates of the grid vertexes on the rendering grid. According to the scheme provided by the invention, the cloth animation simulation calculation time can be greatly shortened, and the method can be widely applied to the expression of flexible materials such as costumes and clothes of animation roles and game roles.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Method and system for the development of high-assurance computing elements
ActiveUS8726241B1Design optimisation/simulationCAD circuit designHigher order languagesHigh assurance
The present invention is a methodology for developing high-assurance computing elements. The method may comprise one or more of the following steps: (a) receiving a plurality of requirements detailing intended behavior of a high-assurance computing elements; (b) creating a model based on the requirements; (c) generating higher order language (HOL) code based on the model; (d) simulating the behavior of the computing elements from the HOL code; (e) generating test cases based on the model; (f) translating the model into a verification tool-specific format; and (g) formally verifying the model using a verification tool.
Owner:ROCKWELL COLLINS INC
Railway tunnel emergent rescue station personnel evacuating time obtaining method
InactiveCN106126831AEffective evacuationSafe and Applicable by DesignGeometric CADData processing applicationsRailway tunnelCalculation methods
The invention discloses a railway tunnel emergent rescue station personnel evacuating time obtaining method. The method comprises the steps that railway tunnel, train compartment and personnel conditions and rescue station relevant parameters are obtained and calculated through a calculation method shown in the description for verification. The emergent rescue station personnel evacuating time obtaining method is built based on a calculation method and railway tunnel personnel evacuating characteristics, the method is easier and more practical compared with software analogue simulation calculation, the calculation result is reliable, and a gap in a railway tunnel emergent rescue station personnel evacuating time theoretical model in China is filled. By means of the method, the design of structural parameters such as an emergent rescue station platform width and transverse channel distance can be guided, the safety of a built emergent rescue station is tested, it is ensured that passengers and train personnel can be effectively evacuated in a railway tunnel, and the railway tunnel disaster-prevention evacuating rescue engineering design is safe, applicable, economical and reasonable.
Owner:SOUTHWEST JIAOTONG UNIV +2
Systems and methods for quantum processor topology
Topologies for analog computing systems may include cells of qubits which may implement a tripartite graph and cross substantially orthogonally. Qubits may have an H-shape or an l-shape, qubits may change direction within a cell. Topologies may be comprised of two or more different sub-topologies. Qubits may be communicatively coupled to non-adjacent cells by long-range couplers. Long-range couplers may change direction within a cell. A cell may have two or more different type of long-range couplers. A cell may have shifted qubits, more than one type of inter-cell couplers, more than one type of intra-cell couplers and long-range couplers.
Owner:D WAVE SYSTEMS INC
Method for controlling total amount of catchment pollutants under uncertain conditions
The invention discloses a method for controlling the total amount of catchment pollutants under uncertain conditions. The method comprises the following steps of: S1, establishing a catchment distributed water environment model and developing a data interface; S2, carrying out random simulation with a management target as a guide; S3, calculating a confidence level achieved by a water quality management object; S4, establishing a mapping relationship between a pollution loading amount scene and the confidence level; and S5, evaluating and screening a total amount control scheme of the catchment pollutants under the uncertain conditions and carrying out the total amount control of the catchment pollutants by using the screening scheme. According to the method disclosed by the invention, the catchment distributed water environment model, a random simulation technology and an artificial neural network method are effectively integrated; the method for reasonably determining the reducing amount of the pollutants under the uncertain conditions is established; and the important significance for the total amount control of the catchment pollutants under the uncertain conditions is realized.
Owner:PEKING UNIV
Method for establishing electromagnetic stirring parameters of secondary cooling area of plate blank
ActiveCN102527973AImprove compactnessImprove uniformitySpecial data processing applicationsAnalogue computationThermodynamics
The invention provides a method for establishing electromagnetic stirring parameters of a secondary cooling area of a plate blank. The method comprises the following steps of: performing analog computation of a finite element value according to assumption of a site electromagnetic stirring condition, thereby obtaining the magnitude and the distribution state of the magnetic flux density; accordingly, judging the magnitudes of stirring effects caused by the distribution modes of different stirrers and a stirring current direction; and confirming the reasonable electromagnetic stirring distribution mode and the stirring current direction. According to the method provided by the invention, various physical quantities of an electromagnetic field, such as magnetic flux density, electromagneticforce, and the like, can be quickly calculated, the reasonableness of the present electromagnetic stirring parameters and the magnitude of the electromagnetic stirring strength can be accurately verified, and the optimal electromagnetic stirring parameters required by the electromagnetic stirring under different continuous casting conditions can be effectively judged, thereby reasonably selectingand confirming the electromagnetic stirrer distribution mode and the stirring current direction. The parameters and the mode optimized according to the method can be used for obviously increasing thestirring strength, the isometric crystal rate and the tissue compactness and evenness.
Owner:ANGANG STEEL CO LTD
Hyperspectral rapid atmospheric correction parameterization method
ActiveCN110987821AAvoid radiationHigh precisionColor/spectral properties measurementsComputer resourcesAnalogue computation
The invention belongs to a hyperspectral atmospheric correction method in quantitative remote sensing. In order to solve technical problems that in the field of quantitative remote sensing, when a widely applied radiation transmission model method is adopted to carry out atmospheric correction, a large amount of computer resources and time are consumed in the calculation process, the work efficiency is low, and the reflectivity inversion precision is insufficient, the invention provides a hyperspectral rapid atmospheric correction parameterization method. The method includes acquiring environment and observation parameters; and establishing an atmospheric correction calculation model, setting a preset surface reflectance value and a final altitude H2 value, obtaining apparent radiance corresponding to different wave bands by using the MODTRAN model, calculating atmospheric correction parameters by using the atmospheric correction calculation model, establishing a lookup table, calculating the apparent radiance and looking up the table to complete atmospheric correction. And five times of analog calculation are performed, so that atmospheric path radiation is effectively avoided, and the precision and efficiency of radiation correction are further improved.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Motion simulation method of protection constant value
The invention discloses a motion simulation method of a protection constant value. The motion simulation method can simulate switch motion full processes of distance protection, current voltage protection, zero sequence current protection and transformer reserve protection, checks accuracy of the protection constant value, improves motion stimulation calculating speed of the protection constant value and provides guarantee for safe stable operation of a power grid. The motion simulation method comprises the steps of (1) initialing data including failure calculating for the first time; (2) reading a switch in the protective research range; (3) judging whether the switch meets an end condition or not, jumping to a step (8) if yes, and executing a step (4) if not; (4) comparing switch reading constant value information in the research range with the failure calculating result, and fining out all starting switches, motion switches and returning switches; (5) judging whether the motion switches exist, executing the step (6) if yes, and jumping to the step (7) if not; (6) tripping off the motion switches, and conducting the failure calculating; (7) taking time of next calculating, and jumping to the step (3); and (8) finishing.
Owner:北京中恒博瑞数字电力科技有限公司
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