36results about How to "Meet the simulation requirements" patented technology

The present invention provides an integration automatization examining system of electric power equipment which relates to fields of integration automatization examining of electric power system, which comprises of host computer PC, lower computer DSP, power amplifier. A PCI bridge with dual-port RAM is connected between host computer PC and lower computer DSP, a sampling circuit connected with analog-to-digital converter in series is placed between power amplifier and lower computer DSP. Parameters and orders are input to host computer PC, selected program downloaded by PC is transferred to DSP, data current is passed through memorizer of DSP, and examining task is carried by DSP. The present invention changes former mode of customization examining device and realizes a multi-use machine, makes the upgrade operation of program convenient, can transfer large current data, and has high precision. The present invention can finish all kinds of protection functional testing of remote control, remote examining, remote signaling of on-line examining and inspection, can communicate with device to be measured, and display testing result on testing report automatically. The report employs Word document, so it's convenient operation by users.

The invention discloses a finite element human body modeling method oriented to human body communications, belonging to the technical field of human body communications. The method comprises the following steps: (1) performing geometrical abstraction to every part of a human body according to the shape properties of every part of the human body; (2) defining an inner geometrical structure of every part of the human body; (3) setting electromagnetic property parameters of stratum mediums in every part of the human body; (4) connecting every part of the human body to form a completed finite element model of human body. The finite element human body modeling method oriented to human body communications provided in the invention can form a finite element human body software model with the geometrical property and electromagnetic property which are similar to an authentic human body, and the finite element human body software model has significance to the study and application of the human body communication technology.

The invention provides a three-dimensional active suspension type spacecraft microgravity stimulation device and relates to a spacecraft microgravity stimulation device. The invention solves the problem that the present spacecraft microgravity ground-based simulation method is only limited to the two-dimensional free motion of the spacecraft and cannot be adopted for finishing the motion experiment of the three-dimensional space of the spacecraft. Two Y-directional linear guide rails are horizontal and are mounted on the upper surface of a frame in parallel; a Y-directional servo platform is arranged on each of the Y-directional linear guide rails; an X-directional linear guide rail is connected between the two Y-directional servo platforms; an X-directional servo platform is arranged on the X-directional linear guide rail; a torque motor and a reel are arranged on the X-directional servo platform; an angle sensor and a laser ranging sensor are mounted on the lower end face of the X-directional servo platform; a sling hinge point is arranged on the X-directional servo platform; the upper end of the sling is wound on the reel; a plane reflector and a tension sensor are mounted on the sling from top to bottom; a ball bearing is arranged at the lower end of the sling. The three-dimensional active suspension type spacecraft microgravity stimulation device is applied to spacecraft microgravity stimulation.

The invention provides a light-source optimization method adopting a compressed sensing technology. The light-source optimization method comprises the following steps: firstly selecting a group of standard orthogonal basis and enabling a light-source graphic to be sparse on the standard orthogonal basis; then expanding the light-source graphic on the standard orthogonal basis to obtain coefficient vector theta and constructing the SO optimization problem into an image restoration problem of solving a minimum L1 norm of theta under the linear-limitation condition, wherein the linear-limitation condition is as follows: imaging in photoresist on a plurality of observation points set at a wafer is consistent to a target graphic. Compared with the traditional SO algorithm adopting the conjugate gradient method, the SO method has the advantages that the operation efficiency can be more effectively improved, and the manufacturability of the optimized light source and a process window of a photoetching system can be improved; simultaneously, a vector imaging model is adopted for describing the imaging process of the photoetching system, the optimized light source not only is applicable to the condition of small NA, but also is applicable to the condition that NA is more than 0.6, and meets the requirement for the simulation precision of high-NA immersed type photoetching system.

The invention provides a software-defined on-orbit satellite simulator system and a design method in the technical field of a satellite ground application system. The system comprises a radio frequency layer, an intermediate frequency layer and a software layer. The software layer can describe a specific service of a satellite, simulate an internal data stream of the satellite, generate satellite-ground interaction simulation data, and communicate with general baseband equipment of the intermediate frequency layer through a network to complete conversion between satellite service simulation data and an intermediate frequency signal. The intermediate frequency layer is responsible for realizing signal system simulation. The radio frequency layer is responsible for realizing frequency pointand power simulation, the intermediate frequency layer matches with the radio frequency layer to realize hardware simulation of a satellite radio frequency signal, a hardware platform of on-orbit satellite radio frequency signal simulation is provided, and the hardware platform adopts a general design. Function reconstruction of a satellite simulator is realized through software definition and changes, reusability and development efficiency of the satellite simulator are improved, development cost is reduced, and a good engineering application value is possessed.

The invention discloses a dual-chord width earth simulator. A first earth simulator consists of a first cold plate, a second cold plate and a first hot plate. A second earth simulator consists of a third cold plate, a fourth cold plate and a second hot plate. The first hot plate is a semicircular sheet embedded into a pedestal, and has an upward opening. A motor driving mechanism passes through the central point of the semicircle of the first hot plate to serve as a main shaft of the first earth simulator, and can control the rotation of the first and second cold plates to shade the outer surface of the semicircle of the first hot plate respectively. The second hot plate is semi-cylindrical and embedded into the pedestal, and has the upward opening. A driving shaft of the motor driving mechanism is overlapped with the axis of the semi-cylinder. The motor driving mechanism can control the rotation of the third and fourth cold plates to shade the inner surface of the semi-cylinder of the second hot plate to simulate variations of the chord width of the earth respectively. The dual-chord width earth simulator can meet the scanning requirements of a biconical earth sensor, and simultaneously provides a measurement target for two paths of infrared channels.

The invention relates to a high-altitude environmental simulation cabin, and optimally selects a highland airline civil aircraft simulation cabin and a construction method thereof. A vacuum system anda special temperature system are added on the basis of a hyperbaric oxygen chamber, and the improved parts mainly include the functions of an air supplying and discharging system, a humidity adjusting system and an oxygen supplying and discharging system; after transformation, a high-low pressure oxygen cabin with a pressure increasing function and a pressure decreasing function can be obtained,and besides the functions of a conventional hyperbaric oxygen therapy, the function of simulating a high-altitude environment is further achieved, so that the cabin can serve as the highland airline simulation cabin. The highland airline simulation cabin can be used for selection of pilots and astronauts, high-altitude physical and psychological training, medical identification, low-pressure oxygen deficit simulation experience, highland adaptability experience, aerospace medical experience, physical training, basic medical researches and other work.

The invention provides a method for winding a dynamic analogue element by adopting stranded conductors, wherein, stranded enameled insulation conductors are taken as winding conductors of transformer model and reactor model to wind coils, thus achieving the aim of reducing eddy current loss and reducing unbalanced current loss; stranded enameled insulation conductors are taken as winding conductors of circuit model element in dynamic analogue system of the electric power system to wind the coils, thus achieving the aim of ensuring that the variation trend of the time constant frequency characteristic is in conformity with the prototype; additionally, the circuit model wired by stranded conductors also greatly reduces the skin effect of circuit. Therefore, the method for winding circuit model element by adopting stranded enameled insulation conductors in the invention can satisfy the requirement of realistic simulation.

The invention provides a micro-mirror array control method for implementation of a free illumination pupil. The method includes: limiting an initial value of deflection angle of each micro-mirror unit to a certain range so that reflected spots on a target face are close to a target light density distribution area; using differences between actual light intensity distribution of the target face and light intensity density of a target to be produced, as evaluation functions, and grouping the evaluation functions according to magnitudes of pixel values of points; keeping unchanged defection angle for each micro-mirror unit which corresponds to one point having the pixel value satisfying the convergence condition; calculating an optimal value of the defection angle of each micro-mirror unit which corresponds to each point which has the pixel value not satisfying the convergence condition, updating the evaluation functions, screening the points each having the pixel value not satisfying the convergence condition, and re-updating the optimal values until convergence. The method has the advantages that the drive voltage value of a micro-mirror array can be effectively returned fast, and quick switching of different illumination modes is achieved.

The invention discloses a coal bed similar material and a preparation method thereof. The coal bed similar material is prepared from the following raw materials in percentages by weight: 15% to 36% of pulverized coal, 18% to 45% of aluminate cement, 10% to 35% of gypsum, 0.5% to 3.6% of active carbon, 0.4% to 1.8% of a polycarboxylate superplasticizer, 0.2% to 1.0% of sodium dodecyl sulfate, 0.3% to 1.5% of carboxymethylcellulose and 10% to 35% of water. The preparation method comprises the following steps: weighing the raw materials in proportion; uniformly mixing the pulverized coal, the aluminate cement, the gypsum, the active carbon and the carboxymethylcellulose to prepare a powder material A; adding water to the polycarboxylate superplasticizer and the sodium dodecyl sulfate, and uniformly stirring to prepare a liquid material B; adding the powder material A into the liquid material B, and uniformly mixing; then putting a mixture into a mold, and carrying out compression molding; conserving the material for 14 d after forming so as to obtain the similar material. The similar material is similar to a real coal bed, is simple in preparation method, easy in operation and high in stability, and has wide practicability.

The invention belongs to the technical field of simulation of gearboxes, and provides a method for designing a universal model of a Matlab based dead axle gearbox in order that the universal model can be applied to simulation of an AMT (automated mechanical transmission) system and can complete dynamic analysis during gear shift and control strategic debugging. The method designs a universal gearbox dynamic model which is integrated with a synchronizer and shafting, realizes prediction of performance of a control system, solves the problem that variation laws of torque and rotation speed during gear shift cannot be obtained, provides a powerful support for selecting gear shifting laws during development of the AMT system and power breakage control during gear shift, and gives a big help for improving gear shifting stability and reliability of friction components of vehicles. By the method, development period of the AMT system is shortened, development cost is reduced, work efficiency is improved, and great and progressive significance is provided for project development.

The invention relates to a virtual crowd motion simulation framework. The virtual crowd motion simulation framework comprises 1) a main control console part which comprises a display control sub part, a rendering management sub part, an environment management sub part, a crowd management sub part, a clock updating control sub part and the like and supplies various configurations required by normal running of a program and scheduling and management functions to the sub parts, 2) an environment expression part for organizing and managing environment information of an environment where a crowd is positioned and supporting inquiry and updating for the environment information, and 3) an individual simulation part which consists of a behavior generation layer, a behavior execution layer and a physical implementation layer and is used for simulating motion behaviors of a single individual in the crowd, wherein the behaviors of the individuals in the crowd are organically combined, so that the motion simulation of the crowd is implemented. The virtual crowd motion simulation framework is relatively high in generality, verisimilitude and flexibility and can simulate the virtual crowd motion under various scenes and influence of multiple environment factors.

The invention discloses an expandable internal combustion engine crankshaft system simulation device, which comprises a mounting platform, a crankshaft group, a servo motor and a crankshaft working condition equivalent assembly, the crankshaft set is driven by the servo motor, the crankshaft working condition equivalent assembly is driven by the crankshaft set, and the crankshaft set and the crankshaft working condition equivalent assembly are both installed on the installation platform. Wherein the crankshaft group is formed by modularizing more than one crankshaft; the device can truly simulate the working condition of the crankshaft system in the internal combustion engine, and meets the equivalence requirement.

The invention discloses an advection mode system suitable for complex terrains and an operation method thereof, and the advection mode system is composed of a terrain filtering module, a coordinate conversion module, an advection mode time integration module, a horizontal advection module, a vertical advection module and a fractal dimension error correction module. The input of the advection mode system is an external driving wind field and input scalar distribution, and the output of the advection mode system is forecasted advection scalar space distribution. When the advection mode system application program runs, a corresponding calculation process is started and serves as a sub-process of the advection mode system application program to carry out numerical calculation, a corresponding calculation function is completed, and the advection mode system program is implemented to provide target advection function service. The advection mode system suitable for the complex terrains can be suitable for different numerical modes, can effectively process the complex terrains, and has good properties.

The invention relates to the technical field of agriculture, and provides a salinized soil water and fertilizer strategy acquisition method and system, a storage medium and electronic equipment, and the method comprises the steps: obtaining a preset value of soil conductivity used for representing the soil salinization degree at a preset time point, and determining a target value of each parameter associated with soil salinization at the preset time point; and inputting the preset value and all the target values into a trained reverse residual neural network to obtain a salinized soil water and fertilizer strategy corresponding to the soil with the soil conductivity being the preset value. The constructed reverse residual neural network can better fit an actual application scene of irrigation and water conservancy, the reverse residual neural network can directly simulate and optimize according to the target soil salinity corresponding to the preset value of the soil conductivity to obtain a salinized soil water and fertilizer strategy, the model precision is high, the simulation requirement can be met, a powerful technical means is provided for optimizing a field irrigation and fertilization strategy, and the analysis efficiency is improved.

The invention provides a universal radio radar and target signal simulator and a using method thereof. The simulator is composed of three parts of video combination, radio frequency combination and control combination. The radio frequency combination part is used for generating three paths of carrier frequency signals of irradiation straight waves, echo waves and clutters for simulating differentradio homing devices; the video combination part is used for generating analog video signals of different wireless homing devices, and modulating the video signals to carrier frequency signals to generate three paths of radio frequency signals of analog irradiation straight waves, echoes and clutters; the control combination part controls the radio frequency combination part and the video combination part to generate signals of corresponding parameters and modulation characteristics between the signals through man-machine conversation or by receiving an analog control instruction from an uppercomputer. The simulator has the advantages that the combination mode in the video combination, the radio frequency combination and the control combination is optimized, so that the simulator can meetthe simulation requirements of radars and target signals of radio homing devices with various homing modes and various models.

The invention discloses a laser three-dimensional forming closed-loop simulation method. The simulation method is different from a common thermal coupling model. The constant laser power is simply adopted in the whole simulation process; the laser power of the next molten pool is continuously and dynamically adjusted based on the technological characteristics of laser three-dimensional forming, and compared with an existing laser three-dimensional forming thermal coupling model, the finite element optimization modeling method based on temperature closed-loop control better conforms to the objective law of the actual forming process. The optimization model more suitable for the real machining process can inevitably and more accurately reveal the thermal-force field evolution law and the coupling mechanism thereof, and a scientific criterion is provided for relieving laser three-dimensional forming stress and deformation.

The invention discloses a thermal vacuum test external heat flux simulation method of a high-orbit remote sensing satellite platform, which comprises the following steps of placing an infrared cage onone side of the heat dissipation surface of the star to be measured through a rotating mechanism, wherein the infrared cage adopts a heating belt material of nickel-cadmium alloy, the heating belt width is 8mm, the spacing is 12mm, the thickness is 0.1 mm, the heating belt resistivity is 1.02 E. 06 Omega . m, sprayed black on both sides of the heating zone; The infrared cage is rotated along theaxial direction by the rotating mechanism, and the external heat flux is calibrated by the method of constant heat flux density. The invention can meet the external heat flux simulation requirements of extremely low temperature and high temperature of the satellite in orbit. High simulation accuracy; So that that shield effect is small.

The invention provides a modeling method suitable for VSC-HVDC system. The modeling method suitable for the VSC-HVDC system comprises the steps: step 1: average simplifying rectification loop; step 2: average simplifying inverter loop; and step 3: average simplifying direct current transmission loop. The invention further provides a relevant converter and a synchronous prototype. The rectification loop, direct current transmission loop and inverter loop of the synchronous prototype use an average value model to form a whole converter average value model. The modeling method suitable for the VSC-HVDC system is suitable for the grid-connected wind farm, and can satisfy most simulation requests under the situation without involving the converter control method.

The present invention provides a software-defined on-orbit satellite simulator system and design method in the technical field of satellite ground application systems, including: a radio frequency layer, an intermediate frequency layer, and a software layer; the software layer can describe the specific services of the satellite, Simulate the internal data flow of the satellite, generate the simulation data of satellite-ground interaction, and communicate with the general-purpose baseband equipment of the intermediate frequency layer through the network, and complete the conversion between the satellite business simulation data and the intermediate frequency signal; the intermediate frequency layer is responsible for realizing the signal standard simulation , the radio frequency layer is responsible for realizing frequency point and power simulation, the intermediate frequency layer cooperates with the radio frequency layer to realize the hardware simulation of satellite radio frequency signals, and provides a hardware platform for in-orbit satellite radio frequency signal simulation, and the hardware platform adopts a generalized design . The invention realizes the functional reconfiguration of the satellite simulator by changing the software definition, improves the reusability and development efficiency of the satellite simulator, reduces the development cost, and has good engineering application value.

The invention discloses a design method and system for an unmanned ship cluster simulation environment. The method comprises the following steps: constructing a cluster comprising a plurality of virtual unmanned ships by using a hardware virtualization technology; receiving a sensor type configured for the unmanned ship by a user; configuring corresponding sensor data for each unmanned ship; receiving a power control instruction of each unmanned ship; and inputting the power control instruction into a pre-constructed mathematical model, calculating the position of each unmanned ship at the next moment, and simulating the navigation of the unmanned ship. According to the technical scheme, a frame foundation is provided for building a simulation environment of the unmanned ship, and the simulation requirement of an unmanned ship system carrying multiple sensors in a complex environment is met.

The invention provides a data processing method and device for a virtual signal network. For an upper computer, a plurality of acquisition devices and a plurality of restoration devices in a virtual signal network, an engineering conversion module can be arranged in each acquisition device and each restoration device; the engineering conversion module comprises a conversion function, and the conversion function comprises a group of parameters to be configured. Further, a first parameter of a first engineering quantity conversion module set in a target acquisition device corresponding to the simulation task and a second parameter of a second engineering quantity conversion module set in a target restoration device corresponding to the simulation task are configured through an upper computer based on the simulation task under the current working condition; and finally, engineering quantity conversion between the target acquisition equipment and the target restoration equipment is realized through the first engineering quantity conversion module configured with the first parameter and the second engineering quantity conversion module configured with the second parameter.

The invention discloses a finite element human body modeling method oriented to human body communications, belonging to the technical field of human body communications. The method comprises the following steps: (1) performing geometrical abstraction to every part of a human body according to the shape properties of every part of the human body; (2) defining an inner geometrical structure of everypart of the human body; (3) setting electromagnetic property parameters of stratum mediums in every part of the human body; (4) connecting every part of the human body to form a completed finite element model of human body. The finite element human body modeling method oriented to human body communications provided in the invention can form a finite element human body software model with the geometrical property and electromagnetic property which are similar to an authentic human body, and the finite element human body software model has significance to the study and application of the humanbody communication technology.

The invention discloses a GaN HEMT scaling model circuit topological structure, which is characterized in that a grid electrode G, a source electrode S and a drain electrode D of a transistor GH1 arerespectively connected with positive electrodes of direct-current power supplies VG, VS and VD; a grid electrode G, a source electrode S and a drain electrode D of the transistor GH2 are respectivelyconnected with one end of the inductor L2, one end of the inductor L1 and one end of the inductor L3; the other end of the inductor L2 is connected with the positive electrode of a direct-current power supply Vgs; the other end of the inductor L1 is connected with the negative electrode of the direct-current power supply V0; the other end of the inductor L3 is connected with the positive electrodeof a direct-current power supply Vds; wherein the source electrode S and the drain electrode D of the transistor GH2 are also connected with the two ends of the meter-based current source. Accordingto the GaN HEMT scaling model circuit topological structure disclosed by the invention, the problems of model precision and ductility can be solved, and the temperature change characteristic is met atthe same time, so that higher model precision is achieved, and the circuit simulation requirement is met.

The invention discloses a dual-chord width earth simulator. A first earth simulator consists of a first cold plate, a second cold plate and a first hot plate. A second earth simulator consists of a third cold plate, a fourth cold plate and a second hot plate. The first hot plate is a semicircular sheet embedded into a pedestal, and has an upward opening. A motor driving mechanism passes through the central point of the semicircle of the first hot plate to serve as a main shaft of the first earth simulator, and can control the rotation of the first and second cold plates to shade the outer surface of the semicircle of the first hot plate respectively. The second hot plate is semi-cylindrical and embedded into the pedestal, and has the upward opening. A driving shaft of the motor driving mechanism is overlapped with the axis of the semi-cylinder. The motor driving mechanism can control the rotation of the third and fourth cold plates to shade the inner surface of the semi-cylinder of the second hot plate to simulate variations of the chord width of the earth respectively. The dual-chord width earth simulator can meet the scanning requirements of a biconical earth sensor, and simultaneously provides a measurement target for two paths of infrared channels.

The invention discloses a coralline gravel limestone and coralline skeleton limestone similar material, a preparation method therefor and an application of the coralline gravel limestone and corallineskeleton limestone similar material. The similar material is prepared from the following ingredients in parts by weight: 20-25 parts of quartz sand, 20-35 parts of barite powder, 12-26 parts of cement, 6-18 parts of high-strength gypsum and 19-25 parts of water, wherein a mass ratio of the cement to the high-strength gypsum is (2: 1) to (3: 1). When the similar material is prepared from the quartz sand, the barite powder, the cement, the high-strength gypsum and the water according to the above proportioning ratio, density, mechanics parameters and the like of the prepared similar material are relatively close to those of real coralline gravel limestone and coralline skeleton limestone and can serve as similar materials of the two kinds of limestone, thereby facilitating related test researches.

The invention discloses a distributed semi-physical network simulation system and a controlling method of semi-physical port thereof, comprising a network physical system and a network simulation system, wherein the network physical system comprises a plurality of network nodes and communication connecting equipment thereof based on military communication network; the network simulation system comprises a plurality of simulative PC machines operated with network simulative software, each simulative PC machine in the network simulative system has a semi-physical port; under the condition that the semi-physical port finishes the functions of information analysis, transmission and time management between the network simulation systems and between the network simulation system and the networkphysical system without changing any arrangement of simulative and physical system, the different simulative applications such as simulation and physical are connected with each other, each simulative PC machine has the semi-physical port, and the expandability of the system is strong.

The invention provides a modeling method and device for a semiconductor device model. The method comprises the steps of determining at least one temperature interval according to a historical simulation result of an integrated circuit device; for different temperature intervals, extracting corresponding device model parameters, and building corresponding sub-device models according to the model parameters; combining the sub-device models to obtain a current semiconductor device model; when the integrated circuit device needs to be simulated again, receiving a current identification value of atemperature interval, and determining a corresponding sub-device model in the current semiconductor device model according to the current identification value; simulating the integrated circuit deviceby using the corresponding sub-device model. Therefore, different temperature intervals correspond to different sub-device models, so that when the integrated circuit device is simulated, no matter what range the temperature is in, the suitable sub-device model can be used for simulating the integrated circuit device, the simulation precision is ensured, and the simulation requirement is met.