533 results about "Analogue computation" patented technology

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.

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.

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.

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.

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.

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.

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.

The method relates to a method for the highly fine three-dimensional modeling of complex earth surface, belonging to the technical field of analogue computation of rock-soil values. The technical scheme is that the method comprises the following steps of (1) obtaining an earth surface contour map and elevation data and establishing a three-dimensional earth surface wireframe; (2) importing the earth surface contour map and elevation data and the three-dimensional earth surface wireframe into 3DMine (Three-dimensional Mine) mineral engineering design software to build an earth surface solid model; (3) dividing earth surface grid points according to actual engineering demands to obtain grid point coordinate data; (4) exporting the grid point coordinate data and grouping and listing the grid point coordinate data in FLAC3D (Fast Lagrangian Analysis of Continua 3D); and (5) formulating a circulation program by utilizing a programming language FISH (Fluorescence In Situ Hybridization) embedded in the FLAC3D, reading a grid point coordinate data list and build an earth surface model. The method for the highly fine three-dimensional modeling of the complex earth surface has the advantages and effects that the self modeling function of the FLAC3D software is fully utilized, the simple practical modeling program is formulated through the utilization of the FISH language, the modeling procedure is simplified greatly, the modeling efficiency is improved, the modeling precision can be flexibly adjusted according to the actual engineering situation and the modeling fineness is high.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention discloses an icing wind tunnel test similarity conversion method based on numerical simulation, and the method comprises the steps: calculating parameters needed by a test through a similarity criterion, and adjusting the parameters if the parameters exceed an icing wind tunnel capability envelope range, so as to enable the parameters to meet the icing wind tunnel capability enveloperange; the states before and after conversion being subjected to analog calculation through CFD software, and comparing ice type calculation results before and after conversion to evaluate whether the conversion results meet requirements or not; and if the calculation result comparison shows that the ice type difference before and after conversion is large, parameters should be reselected. According to the method, accurate simulation and experiment results can be obtained in the range of the existing icing wind tunnel capability envelope, and the performance requirement on the icing wind tunnel is reduced.

According to a aspect of the present invention, there is provided a critical pattern extracting method which extracts critical patterns from mask data for manufacturing a photomask used in a lithography step, comprising at least: extracting mask data of a peripheral region within a predetermined range from an interested portion to be decided in the mask data; defining portions constituting the peripheral region as reference portions and calculating process generation amounts generated from the each reference portion in the lithography step by simulation; performing a predetermined arithmetic operation by using the process generation amounts and distances between the interested portion and the each reference portion; performing multiple integral of an arithmetic operation value obtained by the predetermined arithmetic operation in the peripheral region or an arithmetic operation equivalent to the multiple integral to calculate a process affecter amount; and comparing the process affecter amount with a predetermined threshold value.

The invention provides a design method for the internal size of a regulating valve. According to the method, based on an ANSYS platform and through multiple iterations, the difference value between asimulated flow coefficient and a theoretical flow coefficient is corrected, so that the simulated flow coefficient of the regulating valve is close to the theoretical flow coefficient, the design precision of the internal size of the regulating valve is improved, and the adjusting performance of the regulating valve is improved; and through a specific grid division method and solving arrangement,the simulation calculation error is reduced, each iteration time is shortened, and then the product research and development cycle is shortened.

The invention discloses a post-processing method for a numerical simulation calculation result of a pressurized water nuclear reactor pressure vessel. The post-processing method comprises the following steps: firstly, confirming and grading a flowing phenomenon existing in an existing pressurized water nuclear reactor pressure vessel; respectively establishing three-dimensional geometric models ofan upper chamber and a lower chamber in the pressurized water reactor pressure vessel; using meshing software for meshing the three-dimensional geometric models of the upper chamber and the lower chamber of the pressure vessel, and importing the three-dimensional geometric models into computational fluid mechanics software for numerical simulation calculation; establishing a three-dimensional geometric model of a complete component in the pressure vessel, carrying out mesh generation on the three-dimensional geometric model, and then carrying out simulation calculation; and importing a calculation result into data analysis processing software, performing a series of processing on the result by utilizing a software trajectory tracking function, and generating a required Python script and arequired result picture. According to the method, different types of pressurized water reactor pressure vessel simulation calculation results can be analyzed and processed, different forms of numerical simulation calculation results can be processed with the same method, and a large amount of repeated and redundant work is avoided.