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242 results about "Simulation testing" patented technology

Definition: Performance Simulation Test. A performance simulation test is used by organizations as a way of evaluating candidates for a job position. The basic premise of performance simulation test is to observe the candidate perform the actual job in a controlled environment.

Vehicle-mounted system simulation platform

The invention provides a vehicle-mounted system simulation platform, and relates to the technical field of simulation testing, and the simulation platform comprises an interception layer, a simulation layer, a communication layer and a vehicle-mounted intermediate layer service. The interception layer is used for intercepting interface calling of a vehicle-mounted intermediate layer service and forwarding calling parameters to the simulation layer; the simulation layer is used for abstracting a hardware opponent component corresponding to the calling parameter into a virtual control and generating an analog signal based on the virtual control; the communication layer is used for performing data synchronization between the simulation layer and the interception layer; and the vehicle-mounted intermediate layer service is used for carrying out simulation debugging according to the analog signal, and is used for realizing simulation debugging without depending on entity hardware equipment.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1

Machine learning prediction method for mechanical properties of metal dot matrix

The invention discloses a machine learning prediction method for mechanical properties of a metal dot matrix, and belongs to the technical field of metal materials. The method comprises the following steps: S1, finite element modeling and simulation testing; s2, data collection and preprocessing; s3, performing feature analysis; s4, training and evaluating a machine learning model; s5, carrying out interpretability analysis; and S6, performing performance prediction. According to the machine learning prediction method for the mechanical properties of the metal dot matrix, the research and development cost of the mechanical properties of the metal three-dimensional dot matrix is greatly reduced, the research and development efficiency is improved, the prediction precision is high, the blank of special configuration performance prediction is filled, the influence of parameters on the performance can be clarified, and a reliable basis is provided for structural optimization.
Owner:SOUTHEAST UNIV

PID parameter intelligent setting method and system based on PLC control system

The invention relates to the technical field of PLC (Programmable Logic Controller) control parameter setting, and discloses a PID (Proportion Integration Differentiation) parameter intelligent setting method and system based on a PLC control system. According to the method, a process variable signal, a set value signal and an actuator output signal are collected in real time through a PLC communication protocol, feature quantities are extracted after smooth filtering and noise elimination processing, and a standardized control data set is formed; querying matched setting strategy entries by using the set, calculating complexity indexes, evaluating parameter configuration compliance conditions, and generating setting state judgment of a single control loop; detecting common entities among the loops and calculating an interaction strength index by combining a plurality of standardized control data sets, and generating a multi-loop interaction relation graph; and based on the map fusion setting state judgment, calculating the overall quality score and forming a setting recommendation scheme, and after field verification and closed-loop control simulation test, outputting a final PID parameter setting instruction.
Owner:SHAANXI HUIYUAN ENERGY TECH CO LTD +1

Wind turbine generator state monitoring and fault tracing method and system

The invention discloses a wind turbine generator state monitoring and fault tracing method and system, and relates to the technical field of wind turbine generator state monitoring and fault tracing. According to working condition information of a target wind turbine generator, simulation testing is carried out on core components of the target wind turbine generator; analyzing to obtain a vector cloud picture and a scalar cloud picture of each physical quantity of the target wind turbine generator set under each working condition and a conduction characteristic value of each scalar cloud picture, and monitoring working condition information of the target wind turbine generator set and data of each physical quantity corresponding to each core component in the working process of the target wind turbine generator set; and analyzing whether the working state of each core component of the target wind turbine generator is abnormal or not, thereby performing fault traceability analysis on the target wind turbine generator. According to the invention, the accuracy of state monitoring of the wind turbine generator is effectively improved, the time cost of fault tracing is reduced, and a foundation is laid for fault maintenance of the wind turbine generator.
Owner:华能陇东能源有限责任公司

Integrated circuit automatic generation method based on circuit topological structure perception

The invention discloses an integrated circuit automatic generation method and system based on circuit topological structure perception, a server and a storage medium. The method comprises the steps that an integrated circuit population to be subjected to simulation testing is determined; performing performance simulation on individuals in the integrated circuit population; judging whether a termination condition is met or not according to the performance evaluation result; if yes, outputting an individual with an optimal performance evaluation result as a circuit parameter configuration scheme; if not, individuals with the performance superior to the specified standard are screened out from the integrated circuit population to serve as parent individuals; segmenting the coding vectors of the parent individuals according to drive stage division, and selecting corresponding drive stage coding segments of different parent individuals for exchange to generate cross progenies; determining an adjustment priority of each component in the coding vector of the cross progeny, and adjusting the coding components with different priorities according to a preset rule of matching the priorities to generate a variation progeny; and performing performance simulation by taking the variation offspring as a new generation of integrated circuit population.
Owner:青岛展诚科技有限公司

Multi-level collaborative verification method and platform for aircraft power generation system controller, and storage medium

The invention relates to the field of aviation electrical engineering and real-time simulation testing, and provides a multi-level collaborative verification method and platform for an aircraft power generation system control strategy and a storage medium, and the method comprises the steps: an offline simulation stage: carrying out the preliminary design and verification of the control strategy; in the real-time simulation stage, closed-loop real-time verification and parameter optimization are carried out on the control strategy; in the rapid prototyping stage, optimized control strategy codes are deployed to a rapid prototyping controller and are connected with real or high-precision simulated power generation system hardware, and hardware-in-loop-entity hybrid verification is carried out; wherein a unified performance reference and error feedback chain penetrating three stages of off-line simulation, real-time simulation and rapid prototyping is established, a verification result of each stage is used as an expected reference of the next stage, and error monitoring and backtracking correction are carried out. According to the method, through offline-real-time-prototype three-layer progressive verification and a model precision progressive calibration mechanism, the confidence coefficient and the one-time success rate of final physical verification are greatly improved.
Owner:BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1

High-speed multi-scene vehicle-road collaborative driving simulation system

The invention relates to the technical field of road condition simulation, in particular to a high-speed multi-scene vehicle-road cooperative driving simulation system, which comprises a scene simulation and data acquisition module, a vehicle-road cooperative driving simulation module, a vehicle-road cooperative driving simulation module and a vehicle-road cooperative driving simulation module, wherein the scene simulation and data acquisition module is used for acquiring point cloud data around a simulated vehicle in real time through a virtual simulation scene; the noise analysis module is used for analyzing local and global outlier characteristics of all point cloud data in each voxel and calculating the noise interference prominence of each point cloud data; the point cloud filtering module is used for identifying and eliminating abnormal point clouds based on noise interference prominence; voxel filtering processing is carried out on the remaining point cloud data; and the vehicle-road collaborative module is used for updating the three-dimensional point cloud map of the simulated vehicle by using the filtered point cloud data so as to realize a vehicle-road collaborative simulation test. The invention aims to improve the filtering processing effect of the voxel filtering algorithm on the point cloud data, so that the quality of updating the three-dimensional point cloud map in real time is ensured.
Owner:WUHAN ZHONGJIAO TRAFFIC ENG CO LTD

A tower section scale synchronous similar design method and system

This invention belongs to the field of structural design and simulation testing technology for renewable energy equipment in the marine sector. It discloses a synchronous similarity design method and system for scaled-down towers. This method introduces an innovative composite penalty fitness function to drive a genetic algorithm for automatic optimization, thereby completing the segmented parameter design of the scaled-down tower in a single, high-precision manner. It synchronously ensures a high degree of similarity between the model and the actual model in key dynamic characteristics (first-order natural frequency) and accurate reproduction in three-dimensional geometry, while strictly complying with all engineering manufacturing constraints. This invention significantly improves optimization efficiency, achieves excellent design accuracy and completeness, and has strong engineering applicability.
Owner:SANYA YAZHOU BAY INST OF DEEP SEA SCI & TECH SHANGHAI JIAOTONG UNIV

Performance simulation and test equipment and method for dual-redundancy motor

The invention relates to the technical field of motor performance test equipment, in particular to performance simulation and test equipment and method for a dual-redundancy motor, and the performance simulation and test equipment for the dual-redundancy motor comprises a base, a mounting frame, a vibration ring, a torque detection unit and a connection socket. The connection socket is fixedly connected with a buckle, the connection socket is provided with a connection interface which is in circuit connection with a detected motor, and the torque detection unit is connected with a rotor of the detected motor and detects the output torque of the detected motor; vibration generated by the radial vibration motor and the axial vibration motor on the vibration ring is transmitted to the mounting ring and the dual-redundancy motor, the vibration of the dual-redundancy motor in the running process when the dual-redundancy motor is mounted on an automobile is simulated, and the position and angle of the vibration transmitted to the dual-redundancy motor are changed by rotating the transmission rod. Therefore, the performance simulation test effect of the invention is improved.
Owner:CHANGZHOU DELAI MOTOR

Combinable core particle network-oriented period precision simulator design method

The invention discloses a period precise simulator design method for a combinable core particle network, and relates to the technical field of core simulation testing, and the method comprises the steps: designing a simulation frame of a combinable core particle network simulator; wherein the simulation framework comprises a two-stage core particle network configuration unit and a multi-thread parallel simulation framework; carrying out combinable topology modeling, modular routing mechanism modeling and heterogeneous router micro-architecture modeling on the combinable core particle network; performing protocol layer protocol conversion modeling, protocol layer flow control mechanism modeling, adaptation layer retransmission mechanism modeling and physical layer electrical behavior modeling on the core particle interconnection protocol interface; based on the above design, the period precision simulator for the combinable core particle network is constructed. By designing the simulation framework, more accurate actual core particle network behaviors can be obtained; a higher simulation speed is realized through a multi-thread parallel simulation framework, multi-thread parallel accelerated simulation under a large-scale network is supported, and the simulation test efficiency is improved.
Owner:SUN YAT SEN UNIV

A train control function verification method, device, equipment and medium

ActiveCN116540567BImprove the efficiency of control function integration test verificationImprove the efficiency of integration test verificationSimulator controlTotal factory controlCommunication interfaceData pack
This application discloses a method, apparatus, equipment, and medium for verifying train control functions, relating to the field of train simulation technology. The subsystem simulation system is equipped with a communication interface and establishes a communication connection with the main simulation system through this interface. By monitoring control commands from the main simulation system, when a control command indicating the start of simulation is received, subsystem simulation data is collected; a combined data packet containing the subsystem simulation data is generated based on the subsystem's input / output configuration; and the combined data packet is sent to the main simulation system for updating the current values ​​of corresponding variables. This scheme, by setting up a communication interface in the subsystem simulation system, enables remote access of the subsystem simulation system to the main simulation system; based on this, under the control of the main simulation system, the subsystem simulation data is sent to the main simulation system, realizing remote collaborative simulation testing with the train overall control function simulation platform, thus improving the efficiency of integrated testing and verification of the overall train control function.
Owner:CRRC QINGDAO SIFANG CO LTD

An emulation test system for integrated circuits

PendingCN122362069AData streamData acquisition
This invention discloses a simulation testing system for integrated circuits, belonging to the field of integrated circuit testing technology. It includes a simulation execution module, a data acquisition module, a fault diagnosis module, a parameter correction module, a control module, a visualization module, and an alarm module. The simulation execution module runs a digital twin model of the integrated circuit and outputs simulation parameters, such as temperature, voltage, and timing margin, providing simulation benchmark data for subsequent deviation quantification. This invention overcomes the limitations of traditional single-parameter monitoring by combining multi-parameter comprehensive deviation quantification and dynamic weight allocation with a conditional probability model to accurately diagnose faults and generate a priority list. The hierarchical digital twin model interacts with real-time data streams to achieve accurate simulation of physical behavior, providing a high-precision benchmark for deviation quantification. The model adaptively optimizes, and with iterative control closed-loop, it improves fault identification accuracy and enhances system robustness and practicality.
Owner:XUZHOU WUFANGTU NEW ENERGY TECHNOLOGY CO LTD

A method and apparatus for simulating the operation of a straddle-type monorail vehicle

This invention relates to the field of straddle-type monorail vehicle operation simulation testing technology, and discloses a method and apparatus for simulating the operation of straddle-type monorail vehicles. The method involves adjusting the test bench to match the vehicle's wheel system, applying a vertical load to simulate vehicle weight using an axle load-simulating actuator, and achieving longitudinal and lateral fixation through a traction rod and pulley system. An onboard detection system acquires track irregularity displacement signals and track spectra from the actual track, which are then imported into a vibration simulation system to drive a vibration simulation device to reproduce the vehicle's operating state. Stability parameters are tested using sensors to complete the overall vehicle vibration reliability test. The corresponding apparatus includes a test bench foundation, a reaction frame, a loading gantry, and a vibration simulation system. This invention can accurately simulate actual operating conditions, achieve fault reproduction and extreme condition assessment, and effectively improve the realism and efficiency of the test.
Owner:XUZHOU CRRC TRACK EQUIP CO LTD +2

FPGA (Field Programmable Gate Array) online differential test method, device and equipment and storage medium

The embodiment of the invention relates to the technical field of simulation testing, and provides an FPGA online differential testing method and device, equipment and a storage medium, and the method comprises the steps: controlling a to-be-tested FPGA platform to execute a target program; after each instruction is executed, if the current instruction is of a first target instruction type, acquiring register state information when the FPGA platform to be tested executes the current instruction as first to-be-compared state information; according to the offline tracking data, acquiring register state information when the reference platform executes the current instruction as first reference state information; comparing the first state information to be compared with the first reference state information; and outputting a differential test result of the FPGA platform to be tested according to a comparison result. According to the embodiment of the invention, on-line differential testing can be carried out on the FPGA, so that errors can be quickly positioned.
Owner:CHENGDU QUNXIN MICROELECTRONICS TECHNOLOGY CO LTD

Active sound production system and method for optimizing door closing sound quality

ActiveCN121583233AMeasurement devicesSpeech analysisFrequency spectrumEnvironmental acoustics
The invention discloses an active sound production system and method for optimizing door closing sound quality, and relates to the field of simulation testing, a multi-dimensional sensing array module comprises a distance sensor, a three-axis acceleration sensor, a distributed microphone array and a temperature and humidity sensor, the sensors synchronously collect data, the data are transmitted through a CAN bus, and the timeliness and consistency of the data are ensured; the environmental acoustic modeling module is used for carrying out noise spectrum analysis on microphone signals, evaluating a vehicle door motion state, processing distance and acceleration data, calculating a temperature correction coefficient, dynamically adjusting sound pressure parameters, periodically updating an environmental parameter matrix and reflecting acoustic characteristics under different working conditions; and the PID-fuzzy hybrid algorithm module adopts a PID and fuzzy logic fusion framework, presets a target frequency, a maximum sound pressure level and a door closing speed threshold value, and calculates frequency, sound pressure and speed deviation, and the fuzzy logic module dynamically adjusts PID parameters according to the noise level, weights and superposes a proportional term, an integral term and a differential term, and is used for regulating and controlling the door closing sound quality.
Owner:FAW JIEFANG AUTOMOTIVE CO

A Multi-Level Simulation Testing Method and System for Intelligent Driving

This invention relates to a multi-level simulation testing method and system for intelligent driving. The method includes: hierarchically labeling different test scenarios based on a six-dimensional complexity evaluation model to obtain expected functional safety scenario events and functional safety failure events; generating precise timestamps corresponding to the expected functional safety scenario events and functional safety failure events; synchronously triggering the expected functional safety scenario events and functional safety failure events based on the precise timestamps to simulate corresponding risk scenarios; selecting the verification level of the risk scenario based on the type of functional safety failure event and executing the corresponding simulation instance to obtain test data; and conducting risk assessment based on the test data using a risk assessment model. This application achieves joint injection of scenarios and failures, continuous accumulation of multi-level verification data, and composite risk quantification assessment, improving the comprehensiveness and efficiency of safety verification for intelligent driving systems.
Owner:NANCHANG AUTOMOTIVE INST OF INTELLIGENCE & NEW ENERGY

Multifunctional simulation test machine suitable for cabinet connection test

The invention relates to the technical field of testing machines, and discloses a multifunctional simulation testing machine suitable for cabinet connection testing, which comprises a machine body, a cabinet cavity with an opening at the rear end is arranged in the machine body, a plurality of wiring terminals are arranged in the cabinet cavity, and each wiring terminal is provided with an input end and an output end connected with a cabinet; the operation panel is provided with a plurality of control switches for outputting digital control signals or analog control signals, the control switches are electrically connected with the input end, and the digital control signals or the analog control signals sent by the control switches are transmitted to the cabinet machine through the wiring terminal; the design that the control switch can output a digital control signal or an analog control signal breaks through the limitation of single function of traditional test equipment, can meet the diversified requirements of different models and different functions of cabinet machines for test signals, enables one piece of equipment to complete various test tasks, greatly widens the application scene of the equipment, and improves the test efficiency. The equipment purchase cost of an enterprise is reduced; the problem that a testing device is single in function is solved.
Owner:SHENZHEN AUTOWARE SCI&TECH CO LTD

Detachable phased array satellite communication antenna off-axis angle simulation test device

The invention relates to the technical field of satellite communication, in particular to a detachable phased array satellite communication antenna off-axis angle simulation test device, which comprises an azimuth angle assembly, an off-axis angle assembly and a column separation support assembly, and is characterized in that the azimuth angle assembly comprises a Z-axis adjusting plate, a crossed roller bearing I and a Z-axis adapter plate; the azimuth angle assembly is used for azimuth angle simulation on the horizontal plane of the antenna equipment. According to the invention, the azimuth angle assembly, the off-axis angle assembly and the off-column supporting assembly are arranged, and through cooperative work of the azimuth angle assembly and the off-axis angle assembly, a high-efficiency, stable and accurate off-axis angle simulation test scheme is provided for the low-orbit satellite communication antenna in combination with a first crossed roller bearing and a second crossed roller bearing; the testing efficiency and precision are greatly improved, and the requirements of the low-orbit satellite communication terminal in multi-angle and multi-direction testing are met.
Owner:深圳市飞思通信技术有限公司

A method and device for security assessment of an MCP server, a storage medium and an electronic device

The application discloses an MCP server security evaluation method and device, a storage medium and an electronic device, and relates to the technical field of computers. The method comprises the following steps: performing static analysis on code data of an MCP server according to context information of the MCP server, and obtaining a static analysis report; sending a fuzzing test request to the MCP server to perform dynamic testing, and analyzing whether response data of the MCP server includes reverse attack information for a client using a large model, and obtaining a dynamic analysis report; obtaining an attack scene adapted to the MCP server and generating a test case, performing scene simulation testing on the MCP server based on the test case, and obtaining a simulation analysis report; and comprehensively evaluating the security of the MCP server based on the static analysis report, the dynamic analysis report and the simulation analysis report. The application fuses semantic understanding during static analysis, detects whether a client is reversely attacked during dynamic analysis, and focuses on simulating real attacks during simulation testing, so that the security of the MCP server can be evaluated.
Owner:BEIJING QIHOOD TECHNOLOGY CO LTD +1

Bending moment loading device, detection system and bending moment loading method

The application discloses a bending moment loading device, a detection system and a bending moment loading method, and relates to the technical field of bearing detection. The bending moment loading device comprises a fixing support and a plurality of loading hydraulic cylinders. The fixing support is used for fixing one of the inner ring and the outer ring. The loading hydraulic cylinders are used for being arranged at intervals along the circumferential direction of the slewing bearing. When being projected along the slewing axis, the projection of the other one of the inner ring and the outer ring at least partially covers the loading hydraulic cylinders. The loading hydraulic cylinders are used for applying forces to the other one of the inner ring and the outer ring. When it is necessary to check the slewing bearing, a plurality of forces can be applied to the inner ring or the outer ring by the plurality of loading hydraulic cylinders in the whole circumferential range, so that a load similar to a sine distribution is formed to simulate the bending moment borne by the slewing bearing. Compared with simulation testing, the bending moment loading device reduces uncontrollable factors, improves testing precision, and is beneficial to improving the checking accuracy of the slewing bearing.
Owner:CENT FOR NUCLEAR & RADIATION SAFETY MINISTRY OF ECOLOGY & ENVIRONMENT

Simulation experiment device and method for dynamic corrosion of carbon dioxide to well cementation cement stone

The invention belongs to the technical field of petroleum well cementation simulation tests, and discloses a simulation experiment device and method for dynamic corrosion of carbon dioxide to well cementation cement stone. The simulation experiment device comprises a kettle body, a liquid carbon dioxide bottle and a carbon dioxide recovery bottle, the kettle body is provided with an upper end opening, a lower end opening and a containing cavity, the upper end opening and the lower end opening are communicated with the upper end and the lower end of the containing cavity respectively, and a test combination body is placed in the containing cavity. The test assembly comprises a rock core, and set cement and a sleeve which are sequentially arranged on the outer side of the rock core in a sleeving manner; the liquid carbon dioxide bottle is connected with the upper port through a liquid inlet pipe so as to inject liquid carbon dioxide into the containing cavity, and a booster pump is arranged on the liquid inlet pipe. The carbon dioxide recovery bottle is connected with the lower port through a liquid return pipe to recover liquid carbon dioxide, and a pressure limiting valve is arranged on the liquid return pipe. According to the invention, the flowing of carbon dioxide in the stratum and the corrosion simulation of the cement stone at the well cementation interface are realized, and the actual working condition that the cement stone is corroded by carbon dioxide under the stratum condition is more truly reduced.
Owner:CHINA NAT PETROLEUM CORP +1

Antenna simulation efficiency compensation design method and device, equipment and storage medium

PendingCN121765889ADesign optimisation/simulationMicrowaveReference antenna
The invention discloses an antenna simulation efficiency compensation design method and device, equipment and a storage medium, and relates to the technical field of simulation testing. The method comprises the following steps: acquiring a theoretical difference value between simulation efficiency of a standard reference antenna constructed by an antenna to be designed in simulation software and a microwave anechoic chamber; according to the radio frequency matching circuit structure of the antenna to be designed and the coaxial line parameters, theoretical loss parameters are obtained through calculation; constructing a simulation model of a to-be-designed antenna, and obtaining theoretical radiation efficiency according to the simulation model; and calculating the antenna simulation radiation efficiency according to the obtained theoretical difference value, the theoretical loss parameter and the theoretical radiation efficiency. Theoretical calculation and compensation are carried out on variables related to simulation and real objects, the difference between simulation efficiency and actual efficiency is made up, and more accurate antenna performance evaluation is achieved.
Owner:TCL TECH ELECTRONICS (HUIZHOU) CO LTD

A movable reaction wall for hybrid simulation experiments

This invention discloses a movable reaction wall for hybrid simulation testing, belonging to the field of hybrid simulation testing technology. It includes: multiple support columns arranged in an array, with the first end of each support column fixedly connected to an embedded part in the ground of the vibration table; multiple connectors disposed between adjacent support columns and spaced apart along the height direction of the support columns; and actuator supports, adjustable in height and disposed on the outer sides of adjacent support columns. During the simulation test, the actuator supports are connected to the hybrid simulation test actuator. This invention can be used for hybrid simulation testing and is easy to disassemble, assemble, and store, facilitating material reuse and avoiding resource waste.
Owner:TIANJIN UNIV +1

Stress testing apparatus, method and system for an axi master interface

ActiveCN116089245BImplement coverage verificationHardware monitoringEnergy efficient computingBoundary testingSimulation
Embodiments of the present disclosure provide an AXI master interface-oriented stress testing device, method and system, applied to the technical field of simulation testing. The device comprises a handshake module configured to complete handshake transmission with an AXI master within a preset random transformed reverse pressure ratio of a target channel corresponding to a first preset time, to test the response time irregularity and response intensity of the AXI master; wherein the random transformed reverse pressure ratio is a reverse pressure ratio under a coverage pressure and a boundary test condition, and the target channel comprises a write address channel, a write data channel and a write response channel. In this way, an AXI master interface-oriented stress testing method can be provided, thereby realizing coverage verification of the AXI master.
Owner:TUOWEI ELECTRONIC TECH (SHANGHAI) CO LTD

Calibration method and device for vehicle autonomous lane-changing parameter, electronic equipment and medium

ActiveCN116107252BEnables yaw stability analysisSave test calibration time and costProgramme controlComputer controlControl engineeringControl theory
The application relates to a vehicle autonomous lane-changing parameter calibration method and device, electronic equipment and a medium, comprising: acquiring yaw stability data of a to-be-tested vehicle in a pre-constructed real vehicle test scene, and using a preset longitudinal and lateral drive-by-wire system to jointly debug the to-be-tested vehicle, performing simulation testing on the to-be-tested vehicle by using initial autonomous lane-changing parameters to obtain yaw test data, comparing and analyzing the yaw stability data and the yaw test data to obtain a stability gradient parameter, then adjusting the initial autonomous lane-changing parameters to obtain new autonomous lane-changing parameters and perform simulation testing on the to-be-tested vehicle until a preset autonomous lane-changing condition is met, and the optimal autonomous lane-changing parameters are obtained. Therefore, the problems of a complex vehicle lane-changing process and the inability to analyze vehicle yaw stability are solved, the vehicle yaw stability in the lane-changing process is effectively analyzed by combining vehicle simulation and in-loop testing, thereby saving test calibration time cost and improving function development efficiency.
Owner:CHERY NEW ENERGY AUTOMOBILE TECH CO LTD

An automatic sampling method, device and equipment for simulation testing and a storage medium

ActiveCN115906509BData setAlgorithm
The present disclosure relates to an automatic sampling method, device and equipment for simulation testing and a storage medium, comprising: obtaining a test scene and a parameter space of automatic driving simulation testing, determining a first parameter value according to the test scene, running the test scene to obtain a scene running result, using at least two candidate sampling methods to sample the test scene at least once to obtain a corresponding sampling data set, obtaining effective data of the candidate sampling method according to the sampling data set, comparing the effective data corresponding to the candidate sampling method to obtain a target sampling method, and completing the test of the test scene according to the target sampling method. The present disclosure can obtain an optimal sampling method from several sampling methods, and realize simulation testing of the automatic driving system through the optimal sampling method, so as to find more safety problems of the automatic driving system, ensure the effectiveness of sampling, and improve the efficiency of simulation testing.
Owner:GUOKE FOUNDATION STONE (CHONGQING) SOFTWARE CO LTD

Vibration test simulation method and system based on average control strategy

The invention relates to the technical field of simulation testing, and provides a vibration test simulation method and system based on an average control strategy, and the method comprises the steps: applying an original loading spectrum to carry out the initial simulation of a simulation model, and collecting the vibration response spectrums of a plurality of control points on the simulation model; averaging the multi-point vibration response spectrum to obtain a response mean value spectrum, and performing interpolation processing on the original loading spectrum according to response frequency points in the response mean value spectrum; and calculating scale factors corresponding to the interpolated original loading spectrum and the response mean value spectrum at each response frequency point, scaling and trimming the original loading spectrum according to each response frequency point and the corresponding scale factor thereof, and using the obtained simplified loading spectrum for vibration test simulation. According to the method, in the stage without physical sample pieces, the problem that simulation excitation and test excitation are inconsistent during multi-point average control testing is effectively avoided, the defect that a simulation evaluation result is conservative due to the vibration amplification effect of a large-mass sample piece tool is overcome, simulation precision is improved, design redundancy is effectively reduced, and cost is saved.
Owner:BORGWARNER AUTOMOTIVE COMPONENTS (WUHAN) CO LTD

Vehicle continuous driving cycle generation method and system based on GIS road network and data-driven markov chain

This invention relates to the field of automotive performance testing and autonomous driving virtual simulation technology, specifically a method and system for generating continuous vehicle driving conditions based on GIS road networks and data-driven Markov chains. The method includes four main steps: S1, road topology map construction and OD route planning based on GIS big data; S2, random traffic breakpoint simulation based on a probability distribution model; S3, kinematic envelope construction based on bidirectional physical propagation; and S4, data-driven Markov velocity generation with forward aiming. By constructing a smooth envelope that absolutely conforms to the vehicle's kinematic limits through a unique bidirectional physical propagation algorithm, the abnormal problems of velocity steps and acceleration / deceleration exceeding physical limits in the random generation process of traditional Markov chains are completely solved. The generated driving conditions can be directly used for simulation testing without manual correction.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD

A high-low temperature impact test chamber

This utility model discloses a high and low temperature impact test chamber, relating to the field of simulation testing technology. The utility model includes a chamber body with a control panel on its upper side. A heating plate and a cooling plate are located inside the chamber. The lower surface of the heating plate has rectangularly distributed heating elements, and the upper surface of the cooling plate has several rectangularly distributed cooling fans. A placement plate is fixed inside the chamber, with several ventilation holes on its upper surface. The placement plate is located between the heating and cooling plates. A support block is fixed inside the chamber, and an electric push rod is fixed on the lower surface of the support block. The high and low temperature impact test chamber provided by this utility model features a heating and cooling plate installation method that facilitates disassembly and positioning, significantly reducing subsequent maintenance costs and difficulties. The sample fixing structure composed of the electric push rod and pressure rod can flexibly adapt to different samples, effectively preventing sample movement and ensuring the accuracy and repeatability of the test.
Owner:SHENZHEN JIEOULU IND TECHNOLOGY CO LTD

Test device and test method for measuring motion response of multi-carrier launching platform

The invention provides a test device and a test method for measuring the motion response of a multi-carrier launching platform, and belongs to the technical field of water environment simulation tests. Comprising a platform shell, an elastic supporting unit, a supporting track, a transmitting assembly and a measuring mechanism. The two supporting rails are horizontally arranged on the two sides of the platform shell, a plurality of sets of elastic supporting units are arranged on the supporting rails at intervals, each elastic supporting unit comprises a fixing rod, a limiting groove and an elastic piece, the limiting grooves are formed in the supporting rails, one ends of the fixing rods are connected with the platform shell, and the other ends of the fixing rods are slidably installed in the limiting grooves. Elastic pieces are arranged between the two ends of the limiting groove and the fixing rods. The measuring mechanism is used for measuring the deformation quantity of the elastic piece. The launching assembly comprises a launching cylinder, an electromagnetic valve and a high-pressure gas cylinder, and the launching cylinder is arranged on the platform shell and connected with the high-pressure gas cylinder through the electromagnetic valve. The device can simulate launching of various carriers with high precision, truly reflect dynamic motion response of the platform, and improve accuracy and reliability of test data.
Owner:WUHAN UNIV OF TECH