68results about How to "Reduce Simulation Costs" patented technology

The invention provides a full-link numerical simulation method of an aerospace TDICCD (Time Delay and Integration Charge Coupled Device) camera based on an in-orbit imaging physical mechanism, belongs to the technical field of photoelectronic imaging, and solves the technical problems of satellite full-link full-physical hardware simulation. The method provided by the invention comprises the following steps: step 1, establishing an observation scene containing a spectrum attribute; step 2, carrying out orbit modeling; step 3, carrying out posture modeling; step 4, modeling a camera optical system; step 5, carrying out star observation vector modeling; step 6, carrying out entrance pupil radiance field modeling on a target camera; step 7, carrying out camera radiation responding modeling; step 8, carrying out MFT (Modulation Transfer Function) degeneration simulation; step 9, carrying out noise adding and compression simulation. According to the full-link numerical simulation method, the simulation cost is saved; the influences on imaging, caused by errors introduced by a full-physical simulation platform, are eliminated; a projection relation between each point of sensor image surfaces at different imaging moments and a corresponding surface feature point is calculated; a problem of geometric distortion in an imaging process can be reflected; each module is provided with a reserved interface so as to conveniently carry out alteration upgrading according to actual scientific research requirements.

The invention provides a method of simulating behavior of a flow interacting with an object. The invention improves the accuracy of the approximation of the spatial pth derivative Dp, p≧1, and therefore reduces the cost of the simulation. It includes in the approximation values of the parameter at points which do not lay on grid lines passing through the point of computation P, and by using these values to optimize the approximation. The use of these additional points depends on a preferential direction, such as determined by the advection direction of the flow. The points used in the approximation extend beyond a unit cube on the computational grid. The simulation is in three or more dimensions. The numerical simulation produces output which can be used in the design or optimization of the object which interacts with the flow. In certain cases, it is the output by itself which is important.

The invention relates to an integrated movement simulating platform and a simulating and testing method for migration, transformation and a final destination of groundwater pollution. The simulating and testing method comprises the following steps: firstly arranging the movement simulating and testing platform; then filling an aeration zone for simulating a typical hydrogeological unit, aquifer mediums and pollutant repairing mediums for simulating a typical permeable reaction barrier; finally performing a simulation experiment of the migration, the transformation and in-situ repair of the groundwater pollution on the simulating and testing platform. According to the invention, in order to satisfy the need for different experiment procedures, the pollutant entering the simulating and testing platform can be simulated in various manners, the simulation of a persistent pollution source or a provisional pollution source and the simulation of point source pollution or non-point source pollution are realized, and the whole process that the simulated pollutant penetrates through the aeration zone from the earth surface, enters into an aquifer and realizes the migration and the transformation in the aquifer can be clearly observed; the simulation of the migration, the transformation and the in-situ repair of the pollutant in the typical hydrogeological unit can be realized.

The invention discloses a photovoltaic cooling-heating electric co-production system modeling method. According to the technical scheme, a photovoltaic cooling-heating electric mathematic model is constructed, and the photovoltaic cooling-heating electric mathematic model is simulated through MATLAB / Simulink. An electric co-production system model is constructed and subjected to digital simulation, in the simulation process, the temperature-rise problem of a photovoltaic component brought in an electricity generation process is considered, cooling modeling is conducted on a solar battery during simulation, the energy in a solar cell panel is collected and utilized, the simulation of the energy utilized rate is achieved, so that the simulation has high reliability, the purpose that the temperature of the photovoltaic component is effectively lowered can be achieved, the temperature range fit for work is controlled, the waste heat of the photovoltaic component is effectively utilized, the recycle of the energy is achieved, the occurrence of energy waste is reduced, the simulation effect is good, the simulation cost is low, the solar photovoltaic efficiency and photothermal efficiency when perturbation occurs in the illumination intensity are observed in real time, and the simulation safety is sharply improved.

The invention relates to a real-time fixed wing aircraft simulation system and a simulation method. The real-time fixed wing aircraft simulation system comprises a lower computer, a host computer, a ground station unit, an instrument unit, a vision unit and a parameter interface unit, wherein the lower computer is used for operating an aircraft model in a real-time embedded system, the host computer is used for compiling an aircraft model application program into the real-time embedded operation system and sending the compiled real-time embedded operation system to the lower computer, PID control parameters of the aircraft model are modified in real time, an operation state of the aircraft model is monitored, and the parameter interface unit is used for sending designated aircraft model parameters to the lower computer to realize real-time simulation of a designated fixed wing aircraft. Through the system and the method, a flight scene is simulated in real time, versatility of the aircraft simulation system is improved, complex programming and debugging are avoided, and simulation cost is reduced.

The invention provides an oscillatory-wave-based simulation system for detecting and positioning partial discharge of a cable. The oscillatory-wave-based simulation system comprises a tested cable, a high-frequency coupler, an oscillatory wave circuit, a control module and a display module, wherein a defect point is arranged on the tested cable; the control module outputs a control signal to control the oscillatory wave circuit to produce oscillatory wave voltage; the oscillatory wave circuit outputs the oscillatory wave voltage to the tested cable connected in series with the oscillatory wave circuit, and the oscillatory wave voltage excites a partial discharge signal at the defect point; the high-frequency coupler is connected with a first endpoint of the tested cable and used for receiving the partial discharge signal; the control module positions the defect point according to the received partial discharge signal; and the display module displays the positioning result. The oscillatory-wave-based simulation system is low in simulation cost and high in efficiency, can be used for experiments and trainings in a power system simulation platform, and is suitable for popularization.

The invention relates to an electrified length measurement simulation system for a high voltage cable. The system comprises a high voltage test cable, a first coupler, a second coupler, a third coupler, a pulse injection module, a signal measuring module and a synchronizing signal detection module. The signal measuring module generates trigger pulse transmitted to the pulse injection module which receives the trigger pulse and outputs coded pulse to the synchronizing signal detection module to be received. The synchronizing signal detection module records the waveforms of the trigger pulse and the coded pulse on a time shaft and measures the electrified length of the high voltage test cable according to time and pulse spreading speed corresponding to the waveforms. In addition, the invention further provides a local discharge detection and positioning simulation system for the high voltage cable. According to the invention, the measuring process of the electrified length of the high voltage cable and the local discharge detection and positioning process are simulated with low simulation cost and high efficiency, so that the invention can be applied to various experimental platforms and training systems and is suitable for common popularization and use.

The invention provides a simulation method for detecting local discharge of a switch cabinet based on a virtual reality technology. The method comprises the following steps of: detecting typical data which is actually measured by positioning to establish a local discharge module according to the local discharge of the switch cabinet; by taking a local discharge detecting instrument as a prototype, establishing a detecting instrument module for detecting the switch cabinet by virtue of the virtual reality technology; invoking the local discharge module and the detecting instrument module to perform simulation detection of local discharge detection so as to acquire simulation detection data; and monitoring operating conditions of the switch cabinet by virtue of the simulation detection data. According to the technology, the detection simulation of the local discharge of the switch cabinet is finished through a computer, and physical equipment is not required, so that the simulation cost is low, the interference is small, the safety is good, the efficiency is high, and thus the simulation method has an extremely high promotion value.

The invention discloses a human-computer interaction control semi-physical simulation system for multi-modal unmanned aerial vehicle, which comprises: an airborne processor, which is mounted on an unmanned aerial vehicle; a gesture recognition device and an electroencephalogram signal measuring device, which are connected to a switching module through a serial communication module, and the switching module is connected to the airborne processor; a remote controller, which is connected to the airborne processor through a PPM interface; a simulation upper computer, which is equipped with an AirSim simulator and is connected to the onboard processor through the serial communication module; a ground control station, which is connected to the airborne processor through the serial communicationmodule, and is connected to the simulation upper computer through an UDP protocol. The invention further discloses a human-computer interaction control semi-physical simulation method for multi-modalunmanned aerial vehicle. The invention has the advantages that the electroencephalogram and gesture control, remote controller control, and the simulation of the flight process of the unmanned aerialvehicle under various modal control are realized, and the simulation of the flight process of the unmanned aerial vehicle controlled by the ground control station can also be realized.

The invention discloses a communication track expanding method and device. The communication track expanding method comprises the following steps of: extracting an original communication track file of each progress of an application program operating on one operation scale; matching attributes of atomic events in the original communication track file, determining a grammatical relation among the atomic events, organizing the atomic events according to the grammatical relation to form a grammatical event sequence; determining meanings and a relation of the atomic events in the grammatical event sequence, constructing an algorithm event according to a mutual relation of the grammatical events; operating the application on a plurality of different operation scales for multiple times to form a plurality of algorithm events; determining a relation among the algorithm events for reflecting relations between the communication track and the progress number and between the communication track and the inter-progress topology; and generating a target communication track file of the application operating on a target scale on the basis of the relation among the algorithm events. The embodiment of the invention also provides a communication track drive analogy method and system.

A liquid-solid couple analysis method of galloping cylinder with elastic support under wake flow includes such steps as establishing galloping model of single cylinder under fluid action, calculatinggalloping fluid-structure coupling of galloping fluid-structure coupling of elastic supporting cylinder under wake flow, and calculating galloping fluid-structure coupling of galloping fluid-structurecoupling of galloping fluid-structure coupling of galloping fluid. S2, defining the parameters needed for numerical simulation of computational fluid dynamics software; S3, fluid-structure coupling calculation based on CFD; S4, Computational Fluid Dynamics software is used to simulate and analyze the vibration model of two cylinders under the action of fluid.

The invention provides a 3D scene simulation method based on video preprocessing. Through transcribing simulation demonstration of 3D scenes and 3D models into videos at a training lesion preparation phase, the high-performance requirement for hardware in a training lesson is reduced. The method provided by the invention can substantially decrease the simulation cost.

The invention discloses a finite selection decision method for writing digital aircraft source codes by an artificial intelligence programmer. The method comprises the steps of obtaining executive objects and a decision tree according to decision targets; according to input objects and the decision tree, screening the executive objects to obtain a feasible executive object set; according to the decision targets, finding feature parameters for describing the executive objects under the targets and corresponding calculation methods, and for the feasible executive object set in the second step, calculating the feature parameters of the executive objects; performing scoring on the feature parameters under the decision targets; calculating a comprehensive score; and according to the selected optimal executive object, writing the source codes. The deficiencies in the prior art are overcome; the artificial intelligence programmer is used for replacing personnel to perform digital aircraft source code writing; and independent decision-making is performed in a solution of finite selection, so that the writing efficiency is improved and the aircraft simulation cost is reduced.

The invention discloses a neural network decision method for writing digital aircraft codes by an artificial intelligence programmer. The digital aircraft source codes are written by the artificial intelligence programmer instead of a person; specifically by establishing a corresponding relationship between a target sample set and a simulation step length vector decision set of parts of aircraft part models, and performing neural network training, simulation step length vectors of the decision parts are obtained; the digital aircraft source codes can be autonomously written according to task requirements, and the problems of code writing in source code writing, internal simulation step length design of modules in an aircraft model and the like are autonomously decided, so that the person is liberated from a heavy digital aircraft source code writing process. According to the method, autonomous decision of the digital aircraft source codes is reasonably finished; automation and intelligentization of digital aircraft source code writing are realized; and the aircraft simulation cost is reduced.

The invention aims to provide a method and a device simulating a wireless network. According to the method and the device, to-be-adjusted network performance parameters of local network equipment of a local wireless network are determined according to network performance parameters of the wireless network to be simulated, then the local network equipment is controlled according to the to-be-adjusted network performance parameters for simulating the wireless network with the network performance parameters to be simulated, and therefore users can simulate the wireless network with the specified network performance parameters, and the time and the money cost for setting up a general mobile system are saved. Furthermore, the detection efficiency of detecting whether mobile application has problems under different wireless network environments can be improved. Meanwhile, according to the method and the device, the wireless network with the network performance parameters to be simulated can be simulated according to the to-be-adjusted network performance parameters required by the users so that various wireless network environments can be provided.

The invention discloses a power domain controller of a pure electric vehicle power system. According to the pure electric vehicle power system, a whole vehicle control module, a motor controller module and a battery management module are integrated in the power domain controller. The invention further discloses a control method of the power domain controller. By the adoption of the technical scheme, the electronic module device and the control method are applied, the whole vehicle controller, the battery management system main control module and the motor controller main control module are integrated, and a three-in-one new energy power domain controller is developed; an original distributed control design scheme is replaced, the cost is low, the development cost is low, platformization iseasier, few CAN network resources are occupied, and the control strategy simulation cost is low.

The invention discloses a computing method for the simulating value of the optical signal to noise ratio (OSNR) of a pre-built transmission network. The computing method comprises a data acquisition step and a computing step. The data acquisition step comprises the following sub-steps of acquiring the actual gain parameters and noise coefficients of previous projects; setting an actual gain-noise relation curve according to the actual data of the previous projects; acquiring a current gain-noise relation curve according to the actual gain-noise relation curve; and calculating a current incident optical power parameter and a current equipment attenuation allowance parameter according to the actual incident optical power parameters and the current equipment attenuation allowance parameters of the previous projects. The computing steps comprises the sub-step of computing an optical output SNR via the current incident optical power parameter, wherein a current gain parameter is acquired through computing by using the current incident optical power parameter, the current equipment attenuation allowance parameter and an optical fiber attenuation parameter; a current noise coefficient which is an unknown quantity during the computation process of the optical output SNR is acquired via the current gain-noise relation curve.

The invention discloses a real-time simulation device for a photovoltaic combined cooling heating and power system and a simulation method thereof. The device comprises an upper computer and a universal real-time simulation platform. The universal real-time simulation platform comprises a 1# target machine for simulating a power supply network model and a 2# target machine for simulating a heat supply network model. The upper computer is connected with the 1# target machine and the 2# target machine through a switch. According to the device of the invention, through connecting the upper computer with the 1# target machine for simulating the power supply network model and the 2# target machine for simulating the heat supply network model, the simulation device can perform real-time simulation on the power supply network model and the heat supply network model, thereby realizing real-time observation for solar photoelectric efficiency and photothermal efficiency when illumination strength disturbance occurs. The real-time simulation device and the simulation method thereof have advantages of low simulation cost, great simulation safety improvement, simple structure and low cost.

The embodiment of the invention discloses a bogie rapid simulation method and device, which are used for simplifying the simulation process of the bogie and improving the simulation efficiency and accuracy. The method provided by the embodiment of the invention comprises the steps that firstly, standard and normative working condition content of the bogie industry is obtained; then, the standard working condition contents are packaged; rapid simulation pretreatment is performed on the bogie, so that a bogie rapid simulation preprocessing result is automatically generated, and then after the simulation report template submitted by the user is received, key information, related to the bogie rapid simulation preprocessing result, in the simulation report template can be obtained and used forbeing combined with the bogie rapid simulation preprocessing result to automatically generate a simulation report of a bogie.

The invention provides an RVDT (rotary variable differential transformer) signal simulation circuit, method and device. The circuit comprises a signal acquisition circuit, a controller and a signal output circuit, wherein the signal acquisition circuit is used for acquiring a simulation excitation signal input by a sensor primary coil of an RVDT, converting the simulation excitation signal into a digital excitation signal and transmitting the digital excitation signal to the controller; the controller is used for determining a current wiring mode of the RVDT, determining a differential signal and excitation signal function relation corresponding to the current wiring mode of the RVDT from differential signal and excitation signal function relations corresponding to preset wiring modes of the RVDT, calculating a digital differential signal corresponding to the digital excitation signal according to the determined function relation and transmitting the digital differential signal to a signal output circuit; the signal output circuit is used for converting the digital differential signal into a simulation differential signal. Signal simulation of the RVDT in different wiring modes can be compatible at a lower cost conveniently.

The invention discloses power adjustable secondary circuit energy consumption simulation test apparatus and method. The apparatus comprises a vapor generator simulation device which is connected with a plurality of condensation devices; communication between each condensation device and the vapor generator simulation device can be switched; each condensation device is connected with a water supply device which communicating with the vapor generator simulation device; a pressure stabilizing device is arranged between each condensation device and the corresponding water supply device; and the pressure stabilizing device communicates with all the condensation devices and all the water supply devices as well. The test apparatus and method can realize rapid and accurate regulation of the power of a secondary circuit, and realize the simulation of the whole secondary circuit system. The test apparatus has low cost, ensures the test accuracy, has high operability, is convenient to realize, and provides a whole solving scheme of secondary circuit system test simulation for overall simulation test systems of nuclear reactors.

The invention discloses a simulation method and device for a traction power supply system of a maglev train. The method comprises the steps of building a traction power supply system model, wherein alinear motor model is built for each two adjacent power supply subareas so as to enable the two adjacent power supply subareas to share one corresponding linear motor model; acquiring a control signalfrom a traction controller; and controlling the linear motor model to execute a corresponding action based on the control signal so as to output a parameter after the action. According to the invention, the number of redundant linear motor models is effectively reduced, the operand and complexity of a simulation model are reduced, and the method has high simulation universality, so that the simulation cost is greatly saved, and the simulation efficiency is improved.

The invention provides an unmanned aerial vehicle cluster multi-mode virtual-real interactive simulation system and method. The system comprises an interaction module, a plurality of simulation unmanned aerial vehicles, and a plurality of unmanned aerial vehicle control modules corresponding to the plurality of simulation unmanned aerial vehicles, wherein the unmanned aerial vehicle control modules comprise non-interactive unmanned aerial vehicle control modules and interactive unmanned aerial vehicle control modules which are in communication connection with the interaction module; the interaction module is used for sending a flight control instruction and / or a modal control instruction to the interactive unmanned aerial vehicle control modules; and the interactive unmanned aerial vehicle control modules are used for controlling flight modes of the simulation unmanned aerial vehicles corresponding to the interactive unmanned aerial vehicle control modules according to flight control instructions, and / or controlling the flight mode of the simulation unmanned aerial vehicles corresponding to the interactive unmanned aerial vehicle control modules according to mode control instructions. According to the unmanned aerial vehicle cluster multi-mode virtual-real interactive simulation system and method, the control reliability and redundancy of the unmanned aerial vehicle control modules are improved; and the flight modes of the simulation unmanned aerial vehicles are controlled according to the mode control instructions, so that the simulation diversity is improved.

The invention discloses an acidifying simulation experiment method. The method comprises the following steps: 1, determining the original permeability of a rock core; 2, sealing the tail end of a rock core holder, and pressing a certain amount of hydrochloric acid in the rock core; 3, carrying out restrained pressure acidification, relieving the pressure, and spraying the obtained acid solution from the forward end of the rock core holder; and 4, determining the permeability of the acidified rock core. The method enables the acidifying stimulation experiment to be completed, has simple steps, and substantially reduces the stimulation cost.

The invention relates to a method for simulating a technical installation consisting of at least two components connected to one another via a real interface. An exchange of exchange objects ensues between the components via the real interface. The exchange of exchange objects is logged in the form of data logs. The control statements are likewise logged in the form of control logs on the components connected via the real interface. A virtual image of the real interface is generated with the aid of the data logs and control logs, whereby the exchange behavior of the components only implicitly goes into the virtual image. The exchange behavior of the components is subsequently simulated by means of the virtual interface.

The invention discloses an annular experimental device for simulating a wheel-rail and bow-net contact high-frequency vibration state. The annular experimental device comprises an annular rail which is horizontally arranged and is in smooth transition as a whole, wherein an experimental train is arranged on the annular rail; an annular traction device for dragging the experimental train is arranged in the center of the annular rail; the annular traction device is connected with the experimental train through a rotating arm and a coupler; the experimental train moves along the annular rail under the action of the annular traction device; the experimental train comprises a train body, a bogie, a wheel pair and a pantograph; the pantograph is in contact with a cable network arranged above theannular rail; a bogie traction motor for driving the wheel pair is mounted on the bogie; and an output shaft of the bogie traction motor is connected with the wheel pair. According to the annular experimental device, a creeping phenomenon caused by train operation is simulated through two sets of power systems, namely the annular traction device and the bogie traction motor, and the wheel-rail contact state is really simulated; and compared with a complete simulation scene, the annular experimental device has the advantages that the simulation condition is greatly reduced, the simulation costis reduced, and the application prospect is good.

The invention discloses an acidifying return stimulation experiment method. The method comprises the following steps: 1, determining the original permeability of a rock core; 2, pressing a return solution in the rock core under a nitrogen cylinder pressurization condition until the flow of the solution flowing through the rock core is stable, and stabilizing for a period of time; 3, sealing the tail end of a rock core holder, and pressing a certain amount of hydrochloric acid in the rock core; 4, carrying out restrained pressure acidification, relieving the pressure, and spraying the obtained acid solution from the forward end of the rock core holder; and 5, determining the permeability of the acidified rock core. The method enables the acidifying return stimulation experiment to be completed, has simple steps, and substantially reduces the stimulation cost.

The invention discloses a well wall stability simulation method and device based on joint surface roughness, and the method comprises the steps: carrying out the three-dimensional contour scanning of a joint surface, obtaining the parameters of the joint surface, and calculating the roughness of the joint surface; the joint surface is obtained by cutting the rock sample according to a preset fluctuation angle; calculating rock mechanical parameters of the rock sample according to the normal stress and the tangential stress of the rock sample obtained by the shear test; calculating rock physical property parameters of the rock sample according to the axial stress, the axial strain and the radial strain of the rock sample obtained by the rock mechanics triaxial experiment; according to the roughness of the joint surface, the rock mechanical parameters, the rock physical property parameters and fluid parameters obtained through a fluid experiment, a borehole wall stability model is established; cutting the rock sample for multiple times by changing the number of fluctuating angles and / or joint surfaces to obtain a plurality of well wall roughness; and inputting the plurality of well wall roughness into a well wall stability model to obtain a plurality of well wall rock displacements, and judging whether the well wall stability model is stable or not, so that the accuracy of well wall stability judgment can be improved.

The invention discloses a system device and working system of a helmet for augmented reality AR simulation fire-fighting training. The scientific and technological level of fire-fighting simulation training can be greatly improved, the simulation cost is saved, the safety degree is high, and the development of the fire-fighting career is promoted.