40 results about "High fidelity simulation" patented technology

A general purpose simulator providing a high fidelity simulation performs the simulation at level 2, the data link layer of the protocol stack level where each individual client has a unique client address. The unique client address emulated by the simulator is inserted into a data frame at the data link layer of a protocol stack before the data frame is transmitted on the communications channel. Simulation at level 3 is also performed by inserting level 3 network identifier to emulated remote multiple clients. The simulator of the present invention may be run at a workstation residing connected to a server servicing the simulated client requests. The simulator also may be run on a host computer connected to a server via a communications device. Additionally, the simulator may also be run on the same system as the server.

The invention discloses an evaluation experimental system of plugging of high-fidelity simulated formation drilling. The system at least comprises a pressure device, a plugging liquid container, a pressure meter and a hydraulic pump; wherein, a pressure system is connected with a high-fidelity loss zone simulator through the plugging liquid container. The invention can highly meet the requirements of differential pressure at the bottom of the drilling, the property and size of the added plugging materials and the interaction of the added plugging materials and the formation according to the physical, chemical and mechanical property of lost rock and the main similarity conditions of geometric, chemical, dynamic, motion and material similarity and the like of simulated formation fracture. The device can be used repeatedly, has low cost and convenient operation and has wide application value and market prospect.

The invention discloses an aero-engine turbine blade reliability digital twinning modeling method, relates to the technical field of aero-engines, and aims to realize high fidelity simulation and tracking of aero-engine turbine blade damage and life loss and quickly and efficiently evaluate the reliability and residual life of the aero-engine turbine blade. According to the invention, the turbineblade is taken as an object, aiming at the characteristics of multi-source and multi-time-scale use reliability related information, few fault samples and the like of the turbine blade, a physical model driving and data driving fusion method is adopted, that is, the specialty of a physical model in the aspect of explaining specific data is fully utilized, and a turbine blade digital entity model based on a high-precision physical model and multi-source data is constructed by means of the advantages of a machine learning method in the aspects of dimension reduction and multi-modal data fitting.The model can reflect the physical characteristics of the turbine blade and the variable characteristics dealing with different environments and damages, and can realize the product operation reliability dynamic evaluation and residual life prediction of multimode information fusion.

The invention provides a method and equipment for constructing a satellite communication simulation network. The method is based on a Docker container to achieve high-fidelity simulation of network elements including a central station and a terminal station, and simulated nodes have the characteristics consistent with those of real nodes at the aspects of protocol processing, service communication, network management and the like. The Docker server cluster is adopted, a cluster management tool is provided, the scale of a simulation network is expanded, and convenience is provided for operationand management. The number of simulation nodes of the constructed satellite communication simulation network can exceed 1000, support is provided for verification of broadband satellite communicationnetwork performance and large-scale networking demonstration, and an experiment platform is provided for verification and simulation of the satellite communication network key technology and the corealgorithm.

A method and system for modeling aerodynamic interactions in complex eVTOL configurations for realtime flight simulations and hardware testing which includes decomposing the aircraft into aerodynamic subcomponents, wherein the interactions between these components are handled by flow simulations of the surrounding fluid, which may be Euler flow CFD simulations. A computer generated simulation can be used to analyze the fluid flow and pressures, the forces delivered by an aircraft into the fluid and the forces onto the aircraft from the fluid, to determine the position and attitude of the aircraft, and other aspects. The system may be used as a flight simulator for pilot training in a realtime environment. The system may be used to support component testing using an interface to those components, such as flight electronics and actuators, to test the components in high fidelity simulations of actual flight demands on those components. The system may also be used to support design analysis in non-realtime to run numerous simulations on different designs and to provide comparative output.

The invention relates to a driving behavior data acquisition method based on a high fidelity driving simulator used for acquiring the driving behavior data under an unconventional emergency situation. The method comprises the following steps: step 1) of respectively constructing virtual scenes in a high fidelity driving simulator according to different unconventional emergency situations; step 2) of performing driving simulation in the high fidelity driving simulator according to the constructed virtual scenes; step 3) of acquiring the measurement data corresponding to different measuring bodies synchronously and continuously during driving simulation through the high fidelity driving simulator, and keeping time and space between the measurement data of different measuring bodies consistent. Compared with the prior art, the driving behavior data acquisition method based on the high fidelity driving simulator provided by the invention has the advantages of being suitable for the simulation of the emergency situations, diversified and adjustable in the simulated scenes, capable of acquiring diverse data types and guaranteeing time and space of different measuring bodies to be consistent and the like.

Methods and systems for generating a raster file in a raster file format for use in a Digital Radar Landmass Simulator (DRLMS). A file in the raster file format defines synthetic aperture radar (SAR) scenery for use in generating a runtime database. The raster file contains a plurality of texture elements (texels) that define the SAR scenery. Each texel may have a material identifier, which identifies a material composition of a respective surface region of the SAR scenery; a surface height identifier, which identifies a surface height with respect to a bare earth elevation (BEE) value of the respective surface region; and a BEE identifier, which identifies a BEE of the respective surface region. A method for determining surface height identifiers based on digital surface model (DSM) elevation data is also provided.

The embodiment of the invention discloses an artificial stone production system, comprising a stirring device, a material distributing machine, a vibrating device and a pressurizing device, wherein the stirring device is used for evenly mixing raw materials; the material distributing machine is used for distributing the materials according to artificial stone textures; the vibrating device is used for vibrating the distributed materials; the pressurizing device is used for pressing the vibrated materials to form a green body; the stirring device, the material distributing machine, the vibrating machine and the pressurizing device are sequentially connected with one another through a conveyer. The artificial stone production system is applied to the field of artificial stone production; the productive task can be finished according to presetting; particularly, high-quality and high-fidelity simulation artificial stone can be prepared; automatic control can be achieved; the artificial stone production system has the characteristics of being high in production efficiency and high in product percent of pass.

The invention relates to a high-fidelity rotation speed signal simulator based on double DDSes. The high-fidelity rotation speed signal simulator based on the double DDSes is mainly characterized by being composed of the two DDSes and an embedded type controller, the first DDS provides clock pulse signals for the second DDS, the second DDS periodically updates data of arbitrary waveforms of a RAM storage area of the second DDS to a D / A converter to generate arbitrary waveforms under the clock control of the first DDS, the embedded controller is used for defining the waveform frequency and waveform data, the waveform data are loaded to the RAM storage area of the second DDS, and the first DDS is controlled to generate clock pulse signals according to the waveform frequency. The high-fidelity rotation speed signal simulator based on the double DDSes generates complex and variable rotation speed simulation signals through the double-DDS technology, can define the signal waveforms arbitrarily, is high in frequency resolution, efficiently and easily resolves the problem of high-fidelity simulation of rotation speed signals in an aero-engine controller hardware-in-loop simulation experiment, and improves the fidelity of the simulation experiment.

A wireless microphone system for the transmission and reception of high fidelity analog or digital audio information uses the 7 GHz frequency spectrum. In particular, the system has ultra-low latency and is capable of being used within existing receiver infrastructure allocated to program making and special events (PMSE). The system incorporates packet diversity in order to provide wider area coverage than conventional wireless microphone systems.

The invention discloses a high fidelity simulation driving system and method. The system comprises an environment acquisition module, an environment reduction module, an operation acquisition module, a model control module and a communication module, wherein the environment acquisition module is arranged on model equipment and used for acquiring external practical environment data around the model equipment when the model equipment operates; the environment reduction module is arranged on simulation driving equipment and used for acquiring the environment data through the communication module, processing the environment data and outputting simulation environment data, and displaying the simulation environment data; the operation acquisition module is arranged on the simulation driving equipment and used for acquiring a driving operation instruction input by a user and sending the driving operation instruction to the communication module; the model control module is mounted on the model equipment; and the communication module is arranged on the simulation driving equipment. The system provided by the invention achieves a read driving scene, improves realness of simulation driving, and improves the user experience.

The invention discloses a plasma particle-field Vlasov-Maxwell system long-term, large-scale and high-fidelity analog method which comprises the steps that a plasma system requiring analog computation is determined, and a related expression manner is obtained; the related expression manner is subjected to discrete treatment, and the Marsden-Weinstein Poisson bracket and the Hamiltonian of the system are discrete according to the expression manner subjected to discrete treatment; according to the discrete Marsden-Weinstein Poisson bracket and Hamiltonian of the system, an evolution equation of plasma particles and an electromagnetic field is obtained; the evolution equation of the plasma particles and the electromagnetic field is treated with an Euler-symplectic algorithm, and a discrete format is obtained by iterative solution, so that plasma particle-field Vlasov-Maxwell system long-term, large-scale and high-fidelity analog is realized. Long-term numerical accuracy and conservativeness of the analog process can be ensured with the method, and high-fidelity and long-term analog can be ensured.

The invention provides a vortex-induced vibration simulation method for an elastic support rigid cylinder structure under the action of a nonlinear energy trap in the field of computational fluid mechanics numerical simulation. The vortex-induced vibration simulation method comprises the following steps: firstly, establishing a two-dimensional drainage basin and a geometric model of the two-degree-of-freedom elastic support rigid cylinder structure; secondly, respectively carrying out grid division on the two-dimensional drainage basin and the structural domain, and carrying out interpolationon the two sets of grids by utilizing a nested grid technology to form a flow field calculation grid; establishing a computational structural mechanics model under the action of the NES, combining thecomputational structural mechanics model with the computational fluid mechanics model, and performing cylinder fluid-solid coupling numerical calculation; and finally, carrying out post-treatment toobtain the vortex-induced vibration characteristic of the cylinder structure under the action of the NES and the inhibition effect of the NES on the vortex-induced vibration of the cylinder structure.According to the method, the vortex-induced vibration high-fidelity simulation model of the two-dimensional cylinder structure under the action of the NES is established on the basis of a computational fluid mechanics method, a structural dynamics theory and a nested grid technology, a numerical prediction result has high credibility, and reference is provided for researching cylinder vibration reduction.

The invention discloses a method for inhibiting ice load of an offshore wind turbine based on variable pitch control. The method comprises that: firstly, a wind turbine mechanism model, an ice load mechanism model and a structural vibration mechanism model are established for qualitatively and quantitatively analyzing the influence of the ice load on the wind turbine; then, the influence of different types of ice loads on the draught fan is determined through field testing or simulation, the influence comprises power fluctuation and mechanical fatigue load increase, and a proper control targetis selected according to the influence of the ice loads on the draught fan; then, the pitch angle is used as a controlled variable, and the ice load of the offshore wind turbine is restrained througha variable pitch control mode of predictive control or robust control or optimal gain scheduling control; preferably, a predictive control mode is adopted; and finally, based on field fan actual testing or high-fidelity simulation software, the inhibiting effect of variable pitch control on the ice load is verified.

The invention discloses a general framework for high-fidelity satellite simulation of a navigation satellite platform, which includes a main processing unit and a dynamic library and a database plugged into the main processing unit; the main processing unit includes a telemetry parameter processing module, a remote control instruction criterion processing module, and a telemetry acquisition module and the dynamic library interface management module; the dynamic library interface management module is connected with the telemetry parameter processing module, the remote control instruction criterion processing module, and the telemetry acquisition module respectively, and the telemetry parameter processing module is connected with the telemetry acquisition module; the dynamic library and the database are connected with the dynamic library interface management The modules are connected; wherein each satellite code name corresponds to a group of dynamic libraries that are plugged in, and each dynamic library corresponds to a subsystem of the satellite, which is used to simulate the functions of the subsystems; using the present invention can build a general platform for high-fidelity satellite simulation, improving the Simulation software development efficiency.

The invention discloses a thrust-load-simulation hydraulic system of a tunnel boring machine. A rodless cavity of a thrust oil cylinder is communicated with an oil opening of a thrust oil path, a rod cavity of the thrust oil cylinder is communicated with another oil opening of the thrust oil path, and the thrust oil cylinder is connected with a piston rod of a thrust-load oil cylinder; an oil inlet of a reset one-way valve is communicated with a large cavity of the thrust-load oil cylinder and an oil tank; one path of an oil outlet of the reset one-way valve is communicated with the rod cavity of the thrust-load oil cylinder, and the other path of the oil outlet of the reset one-way valve is connected with the oil tank after passing through a slender hole electromagnetic proportional throttle valve, a thin cutting edge electromagnetic proportional throttle valve and an electromagnetic proportional overflow valve; an oil inlet and an oil outlet of an oil and liquid air-cooling valve group are communicated with the oil tank. According to the thrust-load-simulation hydraulic system of the tunnel boring machine disclosed by the invention, the electromagnetic proportional throttle valve and the electromagnetic proportional overflow valve with different opening forms are connected in series and are subjected to uniform parameter adjustment, so that the setting of the thrust-load, the setting of rock-soil static pressure and the advance speed are considered in an unified manner to realize high-fidelity simulation of the thrust-load of the tunnel boring machine. The thrust-load-simulation hydraulic system is also suitable for other dynamic simulation occasions of linear thrust-load.

An easy and cost-effective method of generating high fidelity simulation service loads. This invention, however, provides a simple but theoretically sound approach to conducting an accelerated simulation test, while obtaining a reasonable acceleration rate for the test. The method includes the steps of developing a service load history database; combining multiple time series models; adjusting the change of each time series model creating an accelerated service load model; regenerating a random vibration load data; and feeding the load data to drive an actuator for a high fidelity random vibration simulation test.

An infrared (IR) transceiver having a receiver chain with an isolated analog output, includes a transmission gate and a unity gain buffer interposed between the amplifier output and an analog output pad. The transmission gate behaves as a switch, passing the analog output signal to the analog output pad only when an analog output is required. The unity gain buffer has a high input resistance, a low input capacitance, a unity gain and a low output impedance, so that the load of a digital signal processing (DSP) device or measuring instrument on the analog output pad is isolated and does not affect the performance of the receiver chain. Since the transfer rates of the transmission gate and the buffer are each unity, the analog output pad provides a high fidelity analog output signal to the output buffer.

The invention discloses a high-fidelity satellite fault simulation method for a navigation satellite platform. The navigation satellite platform includes a main processing module and various subsystem simulation modules attached to the main processing module, and fault simulation model units are preset in each subsystem simulation module. , adding a fault information processing unit to the main processing module; after the fault information processing unit compares the satellite fault information, it distributes the satellite fault information to the corresponding fault simulation model unit in the subsystem simulation module, performs fault phenomenon simulation, and finally performs fault Solution injection and validation. The invention simulates satellite on-orbit fault phenomena, and responds to faults through telemetry to provide a basis for fault analysis; executes a fault solution plan, verifies the correctness of the fault solution, and provides powerful help for satellite fault elimination.

A simple, low-cost but extremely effective means to represent an intraoperative (for example) fire that highlights recognition using multi-sensual stimulation. The device can be used as part of a high fidelity simulation program that includes an explosion (sound), profuse smoke (visual), and odor (smells) to simulate an intraoperative fire. The design is re-usable, simple to set up, and does not use toxic agents (either to participants or mannequin).

The invention discloses a high-fidelity reconfigurable satellite energy supply test equipment design system. The system comprises a high-fidelity energy supply simulation module which simulates and generates high-fidelity satellite energy supply V / I control parameters according to the on-orbit operation state of a satellite, and transmits the high-fidelity satellite energy supply V / I control parameters to a reconfigurable energy supply monitoring module; the reconfigurable energy supply monitoring module is used for receiving the V / I control parameters, recombining hardware resources of the power supply module, controlling the output of the power supply module and monitoring the working state of the power supply module; and the power supply module outputs voltage and current for satellitepower supply. According to the invention, a software dynamic recombination technology is adopted; power supply module resources are quickly reconstructed, the power supply requirements of different topological satellite power supplies are met. Meanwhile, high-fidelity simulation satellite energy supply output parameters are achieved, the power supply module is controlled to output high-fidelity V / I, the energy design of a satellite is verified, the electrical compatibility and the energy management capacity of whole satellite work of the satellite are verified, and good engineering applicationvalue is achieved.

An infrared (IR) transceiver having a receiver chain with an isolated analog output, includes a transmission gate and a unity gain buffer interposed between the amplifier output and an analog output pad. The transmission gate behaves as a switch, passing the analog output signal to the analog output pad only when an analog output is required. The unity gain buffer has a high input resistance, a low input capacitance, a unity gain and a low output impedance, so that the load of a digital signal processing (DSP) device or measuring instrument on the analog output pad is isolated and does not affect the performance of the receiver chain. Since the transfer rates of the transmission gate and the buffer are each unity, the analog output pad provides a high fidelity analog output signal to the output buffer.

The invention belongs to the technical field of production control, and particularly relates to a multi-fidelity simulation optimization method and device applied to workshop planned production. According to the method, two fidelity-level simulation models are used in cooperation to optimize a workshop planned production problem: firstly, a high-fidelity simulation model and a low-fidelity simulation model are established according to an actual production system; then searching a solution space of the production plan problem by using a low-fidelity simulation model in combination with optimization iterative characteristics of a GA algorithm; sampling by using a sampling method with ordinal number transformation and optimal sampling according to a result obtained by running the low-fidelitymodel to obtain an optimal sampling set; finally, the optimal sampling set is operated through the high-fidelity simulation model, due to the fact that the similarity between the high-fidelity modeland a workshop actual production system is extremely high, a relatively accurate result can be obtained by using the high-fidelity model to operate the production scheme in the optimal sampling set, and therefore the result can serve as the basis to select the optimal production scheme.

An easy and cost-effective method of generating high fidelity simulation service loads. This invention, however, provides a simple but theoretically sound approach to conducting an accelerated simulation test, while obtaining a reasonable acceleration rate for the test. By developing a service load history database; Combining multiple time series models; Adjusting the change of each time series model creating an accelerated service load model; regenerating a random vibration load data; and Feeding the load data to drive an actuator for a high fidelity random vibration simulation test.

The invention relates to simulation equipment for simulating a PMG (Permanent Magnet Generator) alternating-current power supply. The simulation equipment for verifying the complex electromagnetic working environment of a high-safety flight control system is applied to electromagnetic compatibility of the flight control system and high-fidelity simulation of the PMG alternating-current power supply of power supply input verification. PMG is a permanent magnet generator installed on an engine, can generate power when working together with the engine, and thus is difficult to use in verification of the flight control system. The variable frequency and variable voltage broadband alternating-current power supply simulation equipment comprises a broadband transformer, a broadband inductor, a protective tube and a varistor, meets the test requirement of the flight control system, and completely simulates the characteristics of different working states of the airborne PMG. The broadband range is 1407-2836Hz.

The invention provides a fan active power tracking method based on a dynamic multi-model prediction controller. The method comprises the steps that nonlinear models of a fan are built and subjected to linearization and discretization at working condition points, and a linear multi-working-condition multi-model of the fan is obtained; a model prediction controller is built according to the linear multi-working-condition multi-model of the fan; parameters of models in the model prediction controller are updated and corrected according to the actual running state of the fan, and a dynamic multi-model prediction controller is built; and the effectiveness of the dynamic multi-model prediction controller in the aspect of fan active power tracking is verified based on an actual experiment platform or high-fidelity simulation software. The defects of a traditional fan active power tracking strategy are overcome, fluctuation during fan output power tracking is restrained on the basis of the dynamic multi-model prediction controller, and the economic performance of the fan is improved.

The invention discloses a tunnel boring machine torque load simulation hydraulic system. The tunnel boring machine torque load simulation hydraulic system comprises a rotating part, a speed increaser, a load simulation pump, a closed loop safety valve set, an oil outlet check valve set, a long and thin hole magnetic proportional throttle valve, a thin-cutting-edge magnetic proportional throttle valve, a magnetic proportional overflow valve, an oil air-cooling valve set, an oil supplementing check valve set and an oil supplementing loop. The magnetic proportional throttle valve and the magnetic proportional overflow valve different in opening type are connected in series, parameter adjustment is performed in a unified mode, and torque load setting, rock-soil static pressure setting and cutter disc rotation speed are considered in a unified mode, so that high-fidelity simulation of torque load of a tunnel boring machine is achieved. The load valve set scheme is suitable for dynamic simulation of other types of loads as well.

The invention belongs to the technical field of production control, and in particular relates to a multi-fidelity simulation optimization method and equipment applied to workshop planning and production. This method optimizes the problem of workshop planning and production by using two fidelity levels of simulation models: first, a high-fidelity and low-fidelity simulation model is established based on the actual production system; then a low-fidelity simulation model is used, combined with the optimization iteration of the GA algorithm Search the solution space of the production planning problem; use the sampling method with ordinal transformation and optimal sampling to sample according to the results obtained by running the low-fidelity model to obtain the optimal sampling set; finally run the optimal sampling through the high-fidelity simulation model Since the high-fidelity model is very similar to the actual production system of the workshop, using the high-fidelity model to run the production plan in the optimal sampling set can obtain relatively accurate results, so this result can be used as a basis to select the optimal production plan.