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43results about How to "Improve test coverage" patented technology

System kernel fuzzy test seed generation method and system based on large language model

The invention relates to the technical field of data processing, and discloses a system kernel fuzzy test seed generation method and system based on a large language model. The method comprises the following steps: performing feature extraction on Linux kernel system calling on a Host host machine to obtain a feature data set; performing CFG analysis on the feature data set to obtain a system call sequence diagram and extracting a state transition table; constructing a test scene for the state transition table, and performing Syzkaller verification to obtain an effective scene library; generating an initial seed case set for the effective scene library, and executing a test in the QEMU to obtain result data; and performing coverage analysis on the result data to obtain a coverage rate report, and optimizing to generate a target test case set. According to the invention, the test coverage rate and the defect discovery capability are improved.
Owner:TIANJIN NORMAL UNIVERSITY

Artificial intelligence guidance generation program testing method combined with symbolic execution

ActiveCN119537233AImprove test coverageEnhance constraint solution capabilitiesError detection/correctionFuzzy logic based systemsAlgorithmEngineering
According to the artificial intelligence guidance generation program testing method combined with symbolic execution provided by the invention, the code automatically generated by artificial intelligence guidance is effectively tested by combining the strict reasoning ability of symbolic execution and the fuzzy reasoning ability of an artificial intelligence model; the artificial intelligence technology is combined and utilized to enhance and solve program path constraints collected by symbolic execution, and more high-quality and high-coverage test cases are generated, so that the test coverage rate and the correctness of test results are improved, program errors which are difficult to capture by a traditional test framework are found, the test coverage rate and the code error detection capability are improved, and the test efficiency is improved. And no matter whether the to-be-tested program has reference implementation and predefined output or not, the test method can be successfully implemented, developers can be helped to better utilize the program generated by artificial intelligence guidance, and the reliability of the program is improved.
Owner:NANJING UNIV

Test method, device and equipment of SPD hub chip and medium

The invention relates to an SPD hub chip testing method and device, equipment and a storage medium. The method comprises the steps that if it is determined that a to-be-tested SPD hub chip is placed in a replaceable limiting frame of a test seat and communication connection is established with an upper computer, target environment parameters are set, the to-be-tested SPD hub chip is initialized, the upper computer is in communication connection with the test seat, preset test data are written into an EEPROM of the SPD hub chip based on the target environment parameters, then read-back comparison is carried out, and the to-be-tested SPD hub chip is initialized; the static verification data is used for judging the static storage reliability of the to-be-tested SPD hub chip in the current environment, executing continuous read-write operation on the to-be-tested SPD hub chip to obtain a dynamic pressure test data set, and generating a test result of the to-be-tested SPD hub chip based on the static verification data and the dynamic pressure test data set.
Owner:SHENZHEN TIGO SEMICON

Test method, device, equipment and storage medium

ActiveCN112540920BReduce test stressquality improvementError detection/correction
The embodiments of the present invention disclose a testing method, apparatus, device and storage medium, which relate to the field of testing technology. The method comprises: reading at least two test scenario parameter groups from a data source, and based on at least one scenario generation logic, generating at least two test scenario data according to the at least two test scenario parameter groups read; generating simulation objects of at least two test scenarios according to the at least two test scenario data; inputting the simulation objects of the at least two test scenarios into the logic to be tested; and determining the test result of the logic to be tested according to the output result of the logic to be tested. The embodiments of the present invention provide a testing method, apparatus, device and storage medium, which realize the simulation of simulation objects of multiple test scenarios based on a single scenario generation logic.
Owner:CHINA CITIC BANK CO LTD

Test methods for wired controllers, wired controllers and wired controller test systems

This application relates to the field of wired remote control technology, and discloses a testing method, a wired remote control, and a wired remote control testing system. The wired remote control includes: a button control chip configured to acquire simulated button signals during testing, the simulated button signals being used to simulate the signals generated when a physical button is pressed; and a main control chip connected to the button control chip, configured to receive the simulated button signals and use these signals to test the firmware under test in the main control chip. Through this method, the dependence on physical mechanical structures can be eliminated, and the testing of the firmware under test in the main control chip can be achieved through interaction between the button control chip and the main control chip within the wired remote control, thus verifying the robustness, fault tolerance, and stability of the firmware under test in the main control chip.
Owner:MIDEA SMART TECHNOLOGY CO LTD

SPI communication module and SPI communication system

The application discloses an SPI communication module and an SPI communication system, and belongs to the technical field of integrated circuits.The SPI communication module comprises an SPI function module and a test module, and the test logic of the test module and the function logic of the SPI function module are independent of each other.The test module comprises a plurality of test registers; the plurality of test registers are configured based on a CPU, and control the SPI communication module to work in a normal mode or a test mode; when the SPI communication module works in the normal mode, the test module does not work, and the SPI function module normally performs a communication function; when the SPI communication module works in the test mode, input signals and output signals of the SPI function module can be monitored through read-write access to the plurality of test registers, so that the test of the SPI communication module is realized.The design can help users to quickly locate an error source, reduces the test difficulty, improves the test efficiency, and simultaneously improves the test coverage.
Owner:XIDIAN UNIV

An AI vision recognition-based mobile terminal full-scene automatic test system and a test method thereof

The application relates to the technical field of mobile terminal automatic testing, in particular to a mobile terminal full-scene automatic testing system based on AI visual identification and a testing method thereof, which comprises a backend control layer, an automatic driving layer, an AI visual identification layer, a time execution layer, a cross-platform adaptation layer and a tool support layer. The application reduces the dependence on UI element IDs in the mode of AI visual identification, does not need to modify scripts in iteration, can directly realize version control, improves the maintenance and testing efficiency, and has high positioning accuracy and compatibility.
Owner:XIAOHUA (SHANGHAI) INTERNET TECH CO LTD

Test case generation method, device and product based on weighted graph double-path fusion

The application discloses a test case generation method and device based on weighted graph double-path fusion and a product, relates to the technical field of software testing, and automatically extracts an entity list and a relationship triple from a requirement document and constructs a directed weighted graph, thereby replacing a traditional manual design and preset rule mode and improving the design efficiency of test cases; forward paths and reverse paths are generated by respectively performing forward search and reverse search, and a defect type value is added in the reverse search process, so that defects of the prior art which focus on normal flow verification and are insufficient in abnormal scene coverage are overcome, bidirectional coverage of normal flow and abnormal scene is realized, and test coverage and defect discovery capability are significantly improved; test cases are generated by matching and fusing the forward paths and the reverse paths and performing priority sorting on the fused paths, automatic and standardized generation of a test case set is realized, and the efficiency, comprehensiveness and quality stability of the test case set are improved.
Owner:HANGZHOU YOUYUN TECH CO LTD

LVDT analog simulation circuit and signal simulation method thereof

PendingCN121956617AEasily implement static point testingImprove test coverageSimulator controlAviationCommunication interface
The invention belongs to the technical field of avionics testing and signal simulation, and discloses an LVDT analog simulation circuit and a signal simulation method thereof, and the LVDT analog simulation circuit comprises a main control module, a communication interface module, an excitation signal processing module and a sensor signal simulation output module. The main control module receives an external displacement setting instruction through the communication interface; the excitation signal processing module comprises a DAC unit and an excitation conditioning unit and is used for generating amplitude control voltage and conditioning an external LVDT excitation signal; the sensor signal simulation output module serves as a core and comprises a difference value control unit, a sum value control unit, a summation unit and a differencing unit, a conditioned excitation signal and amplitude control voltage are synthesized through an analog multiplier and an operational amplifier circuit, and finally three-phase differential signals (a high end, a low end and a center tap) simulating a real LVDT sensor are output. A mechanical LVDT is replaced by a full-electronic mode, high-precision, programmable and flexible simulation of displacement signals is achieved, the device is particularly suitable for occasions needing high-reliability LVDT interface testing and verification such as an aviation flight control system, and the device has the advantages of being low in cost, high in flexibility and easy to integrate automatic testing.
Owner:XIAN E FLY AVIONICS TECH

Test methods, devices, equipment and storage media for intelligent cockpit interaction functions

This application provides a testing method, apparatus, device, and storage medium for intelligent cockpit interaction functions, relating to the field of software testing technology. The method includes: receiving a test command sent by a user through an instant messaging tool on a mobile terminal; wherein the test command describes the test intent in natural language; performing semantic parsing on the test command to generate structured test parameters; wherein the structured test parameters include at least the intelligent cockpit interaction module to be tested and the corresponding test environment; testing the interaction module to be tested according to the structured test parameters to obtain test result data; and providing feedback of the test result data to the user through the instant messaging tool. This method aims to reduce environmental dependence, improve testing flexibility and convenience, and increase testing efficiency and coverage.
Owner:VOYAH AUTOMOBILE TECH CO LTD

Intelligent agent testing method and device, readable medium, electronic equipment and program product

The invention discloses an agent testing method and device, a readable medium, electronic equipment and a program product, relates to the technical field of large language models, large models, agents and artificial intelligence, and can improve the testing efficiency and the testing coverage rate. The intelligent agent testing method comprises the following steps: determining a current object state and a plurality of candidate actions of an intelligent agent to be tested; for each candidate action, determining an expected object state after the to-be-tested agent executes the candidate action, and determining an expected reward value obtained after the to-be-tested agent executes the candidate action according to the expected object state and a target object state of the to-be-tested agent, the expected reward value is used for representing a minimum difference value between the expected object state and the target object state; and preferentially determining the candidate action with the maximum expected reward value as a target action, and controlling the to-be-tested agent to execute the target action.
Owner:BEIJING YOUZHUJU NETWORK TECH CO LTD

Test system and method

The embodiment of the invention provides a test system and method, and relates to the technical field of intelligent driving. The system at least comprises CAN communication equipment, a rack, a first power supply, a power supply control element and an upper computer, the CAN communication device is in CAN communication connection with the power supply control element and the rack. The rack is used for bearing tested equipment and is in communication connection with the tested equipment; the first power supply is electrically connected with the power supply control element and the rack respectively; the power supply control element is electrically connected with the rack and the first power supply and is used for controlling the first power supply to provide an IG signal for tested equipment on the rack so as to control the power-on and power-off of the tested equipment; and the upper computer is in communication connection with the CAN communication equipment and is used for simulating the intelligent driving assistance system and respectively issuing instructions to the power supply control element and the tested equipment on the rack through the CAN communication equipment so as to complete automatic testing of the interaction function between the tested equipment and the intelligent driving assistance system, and the testing coverage degree and the testing efficiency are improved.
Owner:江苏智驭汽车科技有限公司

Method and system for automatically generating anticipated function security scenarized test case

The invention provides an automatic generation method and system for an expected function security scenarized test case, and the method comprises the steps: constructing an SOTIF real scene library based on an AI model, and the real scene library comprises scene metadata, an environment parameter template, an interference variable template and a security criterion template; a scene keyword input by a user is received, keyword analysis, scene library matching, parameter instantiation and case assembly are carried out through an AI model, and a scene test case is automatically generated; and scene logic verification is carried out according to the generated test cases, in response to meeting the scene logic verification, the priority score of each test case is calculated based on a pre-constructed priority ranking model, and the sequence of the test cases is determined according to the priority scores. According to the method, the test coverage rate is improved, the research and development period is shortened, the generated use case meets the ISO21448 standard, the method can be directly used for expected function safety test verification, and safe development and landing of intelligent driving products are supported.
Owner:CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD

Automatic test circuit for variable bit width memory in programmable logic device

The present invention discloses an automatic test circuit for a variable bit width memory in a programmable logic, including an address data generator, a bit width selector and a variable bit width comparator; the address data generator is used to automatically generate a 15-bit sequence that can automatically flip address signals and data, write enable signals, and transmit them to the bit width selector; after the bit width selector receives the signal from the address data generator, it converts the received signal according to the bit width selection situation, and transmits the converted signal to each memory to be tested; the variable bit width comparator is used to receive the output data signal from the memory to be tested, convert the signal according to the selected bit width, and compare the converted signal, and output the result after obtaining the test result. The present invention can use less circuit structures to realize automatic full traversal test of programmable logic embedded memory, and can select a suitable bit width for testing according to the memory width, and has high test efficiency and flexibility.
Owner:BEIJING MXTRONICS CORP +1

Intelligent report testing method and device, computer equipment and storage medium

The embodiment of the invention discloses an intelligent report testing method and device, computer equipment and a storage medium. The method comprises the steps of obtaining report test configuration information for a target report; collecting multi-modal page information of the target report through the access path; analyzing the multi-modal page information through an AI large model to generate configuration parameters and an adaptive script; before the target report is adjusted, acquiring a reference data snapshot and a reference visual snapshot of the target report through the configuration parameters and the adaptive script based on the access path; after the target report is adjusted, acquiring a real-time data snapshot and a real-time visual snapshot of the target report through the configuration parameters and the adaptive script based on the access path; and performing two-dimensional comparison on the target report according to the reference data snapshot, the reference visual snapshot, the real-time data snapshot and the real-time visual snapshot to obtain a test result of the target report. Through the scheme, the report test efficiency, the report test coverage and the test accuracy can be improved.
Owner:HANGZHOU YOUZAN TECH CO LTD

Source code testing method suitable for electric power information system and related device

The invention relates to the technical field of electric power information, and discloses a safety function verification method suitable for an electric power information system and a related device. The method comprises the steps of determining source code test data requirements and source code scanning defect types according to requirements of an electric power information system; according to the determined source code test data requirement and the source code scanning defect type, designing a test scheme to obtain a source code test scheme; according to the designed source code test scheme, executing a source code test to obtain a test result; analyzing a test result by adopting an automation technology to obtain a test report; analyzing the performance of a preset key index in the test report under different load conditions, and identifying and positioning potential safety problems; and aiming at potential safety problems of identification and positioning, generating test suggestions for visual display. According to the invention, the robustness of the power information system source code can be effectively tested and verified.
Owner:STATE GRID FUJIAN ELECTRIC POWER RES INST +2

Test method and device of intelligent dialogue product, medium, equipment and program product

The invention discloses a test method and device of an intelligent dialogue product, a medium, equipment and a program product, relates to the technical field of large language models, large models, agents and artificial intelligence, and aims to improve the test coverage rate and test accuracy of the intelligent dialogue product. The test method of the intelligent dialogue product comprises the steps of determining process information of a to-be-tested workflow of the intelligent dialogue product, wherein the intelligent dialogue product is accessed to a first machine learning model; determining a page screenshot of a to-be-tested page in the intelligent dialogue product, and determining a first action based on the page screenshot, the first action being an action which can be executed by the intelligent dialogue product on the to-be-tested page; determining at least one second action through a second machine learning model according to the process information and the first action, the second action being an action which can be executed by the intelligent dialogue product in the to-be-tested workflow and the to-be-tested page; and determining a target action from the at least one second action, and controlling the intelligent dialogue product to execute the target action.
Owner:BEIJING YOUZHUJU NETWORK TECH CO LTD

A Reliability Analysis Method for Well Logging Tools Based on Digital Twin and Dynamic Stress Boundaries

This application belongs to the field of oil well logging tool technology, specifically a well logging tool reliability analysis method based on digital twins and dynamic stress boundaries. The method includes: constructing a digital twin model of the well logging tool; establishing a virtual-physical interactive connection; performing virtual accelerated testing using the digital twin model to acquire virtual test data; performing high-acceleration life testing on a physical prototype based on dynamic stress boundaries generated from historical operating data; simultaneously acquiring physical test data; comparing and verifying the physical test data with the virtual test data; adjusting the simulation process based on the comparison and verification results; regenerating virtual test data; fusing the virtual test data and physical test data; using graph neural networks for correlation analysis; identifying coupled failure modes; and constructing a predictive health management model. This forms a complete closed loop from virtual design verification to physical test calibration and then to on-site data feedback optimization, enabling reliability to continuously increase throughout the product's entire lifecycle.
Owner:JILIN UNIVERSITY

Method, device and electronic equipment for evaluating performance of vehicle

PendingCN122712804ASolve the technical problems of low performance evaluation efficiencyImprove performance evaluation efficiency
This application discloses a method, apparatus, and electronic device for evaluating vehicle performance. The method includes: determining multiple test dimensions for inputting multiple test parameters to the vehicle, wherein different test dimensions correspond to different functional modules to be tested in the vehicle; determining simulation models of the vehicle that match the multiple test dimensions, wherein the simulation models are used to simulate simulation scenarios of the vehicle; inputting the test parameters under the test dimensions into the simulation models matching the test dimensions, simulating the simulation scenarios indicated by the test parameters, and obtaining response state data of the functional modules under the simulation scenarios; evaluating the vehicle based on the multiple response state data corresponding to the multiple simulation models, and obtaining vehicle performance indicators, wherein the performance indicators are used to represent the performance of different functional modules under the combined effect of multiple simulation scenarios. This application solves the technical problem of low efficiency in vehicle performance evaluation.
Owner:FAW JIEFANG AUTOMOTIVE CO

Intelligent simulation method, system and equipment for test scene of real-time control system and medium

The invention discloses a test scene intelligent simulation method, system and device for a real-time control system and a medium, and the method comprises the steps: receiving a test demand, carrying out the analysis of the test demand based on a large language model and a test domain knowledge graph, and generating a structured test demand; calling a corresponding generative artificial intelligence model, and generating a cross-modal test data set associated in time sequence and semantics; based on a structured test requirement, a cross-modal test data set and a test domain knowledge graph rule, automatically generating a test script and arranging a time sequence test scene process so as to drive the real-time control system and collect response of the real-time control system; and analyzing a test execution result, optimizing decision logic of data generation or protocol simulation through reinforcement learning based on the analysis result, and updating the decision logic to the test domain knowledge graph. Compared with the prior art, full-link automation of real-time control system testing from scene construction and execution to autonomous evolution is achieved.
Owner:CASCO SIGNAL LTD

Interface testing method and device

The invention discloses an interface testing method and device, and relates to the technical field of computers. A specific embodiment of the method comprises the following steps: in response to a received test request of an interface, obtaining a historical execution record of the interface; converting each record in the historical execution record into a standard record in a specified data format, and merging each standard record to obtain a standard total record; and according to the standard total record, generating a test case for interface testing. According to the embodiment, the test case of the interface is automatically generated based on the historical execution record of the interface, the test efficiency is improved, the labor cost is saved, rich test cases can be obtained based on the historical execution record, the test coverage rate is improved, and the test quality is guaranteed.
Owner:BEIJING WODONG TIANJUN INFORMATION TECH CO LTD +1

A commercial vehicle assisted driving hardware-in-the-loop testing system and method

The present invention discloses a commercial vehicle assisted driving hardware-in-the-loop test system, which relates to the field of vehicle assisted driving test technology, and includes: a host computer module, which is used to build models, compile and download, monitor model operations, and read variables in the controller at the same time, run automated test commands and perform real-time monitoring; a real-time processor, which is used to receive vehicle dynamics information from the host computer and scene information in a graphics workstation, and send signals to the controller; a graphics workstation; a driving simulator; a controller to be tested; a vehicle positioning and high-precision map module; and a vision and radar simulation module. The present invention also provides a commercial vehicle assisted driving hardware-in-the-loop test method, which improves the reliability and accuracy of the environmental perception system, improves the test efficiency, and ensures the safety of the experiment.
Owner:SUZHOU AUTOMOBILE RES INST OF TSINGHUA UNIV (WUJIANG) +1

Database stability test method and device, equipment, storage medium and program product

The invention provides a database stability testing method and device, equipment, a storage medium and a program product, and relates to the technical field of computers. The method comprises the following steps: acquiring a full-quantity SQL case set, wherein the full-quantity SQL case set comprises SQL statements related to business in a production environment; filtering the full SQL case set, and removing invalid cases to generate a to-be-tested case set; the invalid case comprises at least one of a user-defined excluded SQL (Structured Query Language) statement, a grammar error SQL statement and a file deletion operation SQL statement, and the file deletion operation refers to a command related to user-defined file or system file deletion operation in the SQL statement; executing the to-be-tested case set to obtain an execution result; the execution result is used for verifying the stability of the database; and outputting a stability report according to the execution result. The method is used for achieving the effect of improving the test efficiency.
Owner:CETC JINCANG (BEIJING) TECH CO LTD

Multi-version circular upgrading method and device for equipment, equipment and storage medium

The invention discloses an equipment multi-version circulating upgrading method and device, equipment and a storage medium, and relates to the technical field of software upgrading queries, the method comprises the following steps: obtaining a target equipment set, a plurality of software upgrading versions and an upgrading sequence of the plurality of software upgrading versions according to pressure test task configuration, generating a corresponding circulating upgrading sequence according to the plurality of software upgrading versions and the upgrading sequence; for each target device in the target device set, sequentially sending an upgrading instruction corresponding to the current software upgrading version to the target device according to a circular upgrading sequence; and receiving state information returned by the target equipment after finishing the upgrading instruction, and executing the upgrading of the next software upgrading version according to the state information, or stopping the current round of upgrading. Through the mode, the stability and the reliability of the upgrade link in the limit scene are simulated by switching the software upgrade version back and forth at a high frequency, the test coverage is improved, upgrade instructions do not need to be manually issued one by one, and the test efficiency is improved.
Owner:QINGDAO HAIER TECH +2

Game award pool expectation regression test method and device, electronic equipment and storage medium

PendingCN121958099AAdapt to dynamic operational needsStrong dynamic adaptabilityError detection/correctionBiological modelsRegression testingRisk level
The invention provides a game prize pool expectation regression testing method and device, electronic equipment and a storage medium, and relates to the technical field of regression testing. The method comprises the following steps: receiving a Taiyte-level production data flow of a game prize pool, and labeling according to a business risk level, an access frequency and a historical defect rate in a partitioned manner; based on a preset four-dimensional weight formula, calculating a sampling weight of each partition data stream, and performing differential sampling by using a dynamic sampling probe; the KL divergence of the current weight distribution and the target weight distribution is calculated by taking a preset time window as a unit, and if the KL divergence exceeds an alarm threshold value, a weight drift root cause is positioned through LIME sensitive path analysis and call chain tracking; calculating a weight deviation compensation value through a PID (Proportion Integration Differentiation) controller, and adjusting the sampling weight in real time; long-tail scene coverage is enhanced based on a GAN model and a traffic playback amplification technology; and carrying out KS test and quantile anchoring on the test data to verify the weight distribution consistency. A long-tail scene is fully covered, and a verification-drift-correction closed loop is realized.
Owner:GUANGZHOU XINYU NETWORK TECH CO LTD

Automatic interface testing method and device, computer equipment and storage medium

The invention relates to the technical field of automatic testing of financial and medical scenes, and discloses an automatic interface testing method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining all interface requests and response data triggered when a front-end interface is operated through a proxy gateway; then aggregating the discrete requests into a sequential sequence based on a user session ID, and identifying a dynamic parameter dependency relationship multiplexed by a subsequent interface; therefore, a user behavior path graph can be constructed, nodes in the graph represent interfaces, and directed edges represent calling sequences and data circulation; extracting a core path from the atlas and automatically converting the core path into an executable test script, wherein the script integrates dynamic parameter transfer logic; after the test is executed, if failure is caused by interface change, root cause diagnosis is carried out in combination with change information, and the script is automatically repaired by using effective data in the new recorded traffic, so that the self-healing of the test case is realized. According to the invention, the generation and maintenance cost of the test case is obviously reduced.
Owner:PING AN TECH (SHENZHEN) CO LTD

General transmit control system bus signal simulation method

ActiveCN121690902BAccurately reproduce signal aliasing phenomenaImprove test coverageTransmitters monitoringElectric digital data processingModel extractionMessage flow
The application relates to the technical field of computers and discloses a general transmission control system bus signal simulation method.The method comprises the following steps: acquiring device node topology, protocol types and historical load data; constructing a bus network abstract model; extracting a message flow timing template; generating a concurrent message scheduling sequence conforming to arbitration logic; fusing a high-fidelity signal base; superimposing physical layer interference signals based on measured data; and injecting a measured system through a hardware-in-the-loop interface.The system comprises bus topology analysis, network modeling, timing template extraction, scheduling generation, signal fusion, interference injection and hardware output modules.The method significantly improves test authenticity, coverage and platform universality through joint modeling of logic and physical layers.
Owner:SICHUAN ZHONGXING AVIATION TECH CO LTD

A spacecraft bidirectional energy grid connection simulation test system and test method

ActiveCN115356554BImprove test effectivenessImprove test coverageTesting electric installations on transport
The simulation test system and method of the present invention dynamically simulates the power generation capacity and load characteristics of the visiting aircraft, and fully verifies the normal mode and fault mode of the two-way grid-connected power supply access, regulation, and exit, thereby solving the problems of low efficiency, insufficient verification effectiveness, and insufficient adequacy of the existing grid-connected power supply verification between long-term on-orbit spacecraft and visiting aircraft. By simulating the energy state of the visiting aircraft based on real flight data or ground test data, it is closer to the actual on-orbit flight state, thereby improving the effectiveness of the test. Using this system and method, the simulation verification test of the grid-connected power supply between the space station and manned spacecraft and cargo spacecraft has been successfully completed.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Electric drive system NVH dynamic test system and method based on XIL

The invention discloses an electric drive system NVH dynamic test system and method based on XIL. The system comprises a driver-in-the-loop module, a real object-in-the-loop module and an NVH data acquisition system. The driver in-the-loop module is used for collecting a driver real-time operation signal and providing a virtual driving environment; the real object in-the-loop module receives a signal through a real-time simulation machine, and a co-simulation model is used for resolving vehicle dynamic operation parameters; and the rack system drives the dynamometer to apply a dynamic load to the tested electric driving system by adopting a composite control framework based on rotating speed closed-loop control and combined with dynamic compensation according to the parameters. By constructing a human-vehicle-road closed-loop coupling mechanism, the problem that transient load change in a complex driving scene cannot be reproduced in a traditional rack test is solved, working conditions such as urgent acceleration and braking can be simulated in a high-fidelity manner, vibration and noise response of an electric driving system in real dynamic operation can be accurately captured, and the reliability of the electric driving system is improved. And the authenticity and the effectiveness of the NVH test are obviously improved.
Owner:CHONGQING UNIV OF TECH