83 results about "Testbed" patented technology

The application provides a piezoelectric energy feedback suspension equivalent stiffness and damping measurement method and device, and relates to the technical field of suspension stiffness and damping measurement. The method comprises the following steps: building a test platform; simulating the motion process of the excitation gear and the piezoelectric cantilever beam when the piezoelectric energy feedback suspension vibrates, obtaining the vibration displacement of the free end of the piezoelectric cantilever beam, and measuring the voltage signal generated by the piezoelectric cantilever beam during the vibration process; obtaining the speed change curve of the free end of the piezoelectric cantilever beam based on the change of the vibration displacement with time; drawing the voltage change curve of the piezoelectric cantilever beam during the vibration process according to the voltage signal; obtaining the continuous stiffness of the piezoelectric cantilever beam, so as to obtain the equivalent stiffness and equivalent damping of the piezoelectric energy feedback suspension. The application can measure the equivalent stiffness and damping of the piezoelectric energy feedback suspension, and provides a theoretical basis for the dynamic characteristic analysis and real vehicle application of the piezoelectric energy feedback suspension.

The utility model discloses an ultrafiltration membrane test platform device, which belongs to the technical field of ultrafiltration membrane test platform devices, and is characterized by comprising a bottom plate, the top of the bottom plate is fixedly connected with a simulation assembly, the bottom of the simulation assembly is in threaded connection with an ultrafiltration membrane body, and the top of the bottom plate is fixedly connected with a detection assembly; the simulation assembly comprises a box body, the top of the box body is provided with a first cavity and a plurality of second cavities, the top of the box body is rotatably connected with a top cover, and the top of the top cover is provided with a first valve and a second valve. The problems that most of existing sewage is relatively single, different conditions or different turbidity cannot be simulated conveniently, and certain limitation is caused are solved.

1. Name of this design product: Vehicle Thermal Management Simulation and Testing Platform. 2. Purpose of this design: To simulate the operating conditions of a vehicle thermal management system. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses an automatic parking test method, system and device based on virtuality and reality combination and a storage medium. The method comprises the following steps: establishing a test system comprising a virtual parking simulation environment module and a real vehicle test platform; loading the initial state parameters of the real vehicle and the layout parameters of the virtual scene; timestamp synchronization and state alignment of the real vehicle and the virtual scene are completed; starting a test cycle, collecting sensor data and dynamic state data of a real vehicle in real time, and synchronously calculating a virtual traffic flow state in the virtual parking simulation environment module; the sensor data of the real vehicle and the virtual traffic flow state of the virtual parking simulation environment module are fused to generate fused sensing data containing real and virtual information; a parking path is planned according to the fused sensing data, a vehicle control instruction is generated, and the vehicle control instruction is sent to a bottom layer controller of the real vehicle to drive the real vehicle to move.

The application relates to the field of aerospace technology, in particular to a lunar surface plume dust diffusion characteristic ground calibration system and method, which comprises a vacuum chamber, a solar simulator, a test platform, a dust raising device and a measuring device, wherein: the test platform is arranged in the interior of the vacuum chamber; the measuring device is arranged on one side of the interior of the vacuum chamber and comprises a dust raising sensor, a control circuit and an analysis display module; the dust raising sensor is arranged on the test platform through a rotary table and is electrically connected with the analysis display module through the control circuit; the dust raising device is arranged on the test platform in the interior of the vacuum chamber and is used for forming a dust raising area; and the solar simulator is arranged outside the vacuum chamber and is used for simulating a solar light source. The application can realize quantitative measurement of dust raising concentration under different angles and different concentrations, can satisfy calibration of dust raising concentration of all moon exploration missions, and can realize low-cost and high-reliable dust raising concentration calibration ground experiment with a calibration error of less than 15%.

1. Name of the product in this design: Thrust Test Platform for Turbojet and EDF Engines. 2. Purpose of this design: This design is used to measure the thrust ratio of the EDF engine thrust test platform. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The technology involves a method, medium, and testbed scoring cloud-application Quality of Experience (“QoE”) by emulating a mesh network at building locations inside of a building. The testbed includes test environment devices comprising test chambers holding respective stations (“STAs”) that run applications, or Access Points (“APs”) coupled in a mesh, respective connective cables between pairs of test environment devices, the cables reproducing attenuation between building locations, and at least one of the APs serving as a gateway to an internet server. QoE scoring includes a controller causing multiple types of applications on the STAs to generate traffic by executing test exchanges with the server. The testbed measures traffic produced by the test exchanges and scores the traffic streams measured for each of the test sequences of exchanges by combining the measurements into traffic stream scores and by combining the traffic stream scores for the application into a cloud-application QoE score.

The invention belongs to the technical field of agricultural machinery testing, and provides a portable and movable testing platform suitable for a seeding and reseeding device, which comprises a movable rack, a sliding block horizontally connected to the movable rack in a sliding manner, and a seed metering device mounting mechanism arranged on the movable rack, the sliding block is located above the leakage-proof synchronous conveying belt, the sliding direction of the sliding block is perpendicular to the conveying direction of the leakage-proof synchronous conveying belt, and the top of the sliding block is detachably connected with a mounting piece used for fixing various types of seed sowing devices; the sand base simulation assembly comprises a sand leaking box fixedly connected to the movable rack, the sand leaking box is arranged on the side, away from the output end of the leakage-proof synchronous conveying belt, of the seed metering device, and the output end of the leakage-proof synchronous conveying belt is provided with a sand circulating mechanism used for circularly transporting sand output by the leakage-proof synchronous conveying belt into the sand leaking box. The device can effectively inhibit the bounce of the seeds, realizes the lossless cyclic utilization of the sand and the seeds, and can be adapted to various seed sowing devices.

The invention provides a complex test scene generation method for automatic driving, and the method comprises the steps: collecting natural driving data in a real world complex scene, and constructing a complex scene feature database containing multi-view information; based on data driving and mechanism analysis hybrid modeling, a driving environment model and a rare target object model under severe weather and electromagnetic interference environments are established; constructing a scene element semantic library by using a large model technology, analyzing an element interaction mechanism in combination with a causal graph, and establishing high-dimensional feature representation of an element coupling process; constructing a self-adaptive extraction, high-coverage derivation and accelerated generalization model of the complex scene; developing a scene data conversion algorithm, and automatically constructing a universal complex environment key test scene library; and outputting to a digital-physical fusion test platform for system test verification. According to the method, the test scene covering various complex environments and rare events can be efficiently and highly simulated, and the comprehensiveness and reliability of verification of the automatic driving system are improved.

The invention belongs to the technical field of spacecraft ground test equipment, and particularly relates to a microgravity simulation device for spacecraft component ground test, which comprises a base, an air floatation support mechanism, an ultrasonic standing wave stabilization mechanism, a self-adaptive clamping mechanism, a servo drive error compensation mechanism, a control system and a test platform. The air floatation supporting mechanism provides vertical non-contact supporting force to offset gravity, the ultrasonic stabilizing mechanism maintains horizontal stability, the self-adaptive clamping mechanism is adaptive to parts of multiple sizes, and the servo compensation mechanism corrects deviation in real time. The composite suspension structure is combined with PID-fuzzy closed-loop control, the simulation error is controlled within 4.0%, the defects that existing equipment is low in precision, short in time, prone to pollution and poor in universality are overcome, long-time stable simulation can be achieved, and reliable support is provided for part ground verification.

Example implementations described herein are directed to an application crash testing platform that tests provided applications through a machine learning algorithm. Multiple instances of the application are spawned on a cloud-based platform, wherein the machine learning algorithm provides input to each of the instances until an incident causing the application to become inoperable is reached.

An air to ground (ATG) communication system testing platform may be configured to operably couple a base station to an aircraft base radio in a lab environment. The testing platform may include a position simulator and a channel simulator. The position simulator may be configured to generate simulated aircraft position information and communicate the simulated aircraft position information to an aircraft base radio and a base band unit of the base station. The channel simulator may operably couple a remote radio head of the base station to the aircraft base radio, and may be configured to emulate channel conditions with respect to transmission of signaling generated by the remote radio head for communication to the aircraft base radio based on the emulated channel conditions.

The application relates to the field of vehicle-mounted operation system control, and particularly discloses a camera simulation data debugging system, method and equipment based on a vehicle-mounted application; the system comprises an operation system applied to a test platform; the system further comprises an application layer, a driving layer and a system framework layer arranged in the operation subsystem; and a camera simulation service subsystem connected with the system framework layer; the test platform acquires a camera application camera function, constructs a camera data simulation service corresponding to the camera application camera function in the operation system, and reconstructs the operation system; the operation subsystem after reconstruction is configured to call the camera simulation service, configure video simulation interfaces and simulation service parameters of the interfaces, acquire camera simulation data, and execute debugging on the camera simulation data. The above scheme can be independent of the development progress and driving progress of each level in the operation subsystem, thereby simplifying an application debugging process, improving development efficiency, and improving the authenticity of data.

The application provides a hybrid vehicle energy management method and system based on energy flow test and working condition adaptive parameter optimization, and belongs to the technical field of hybrid vehicle energy management. The method comprises the following steps: building a power assembly energy flow test platform, and completing a DOE experiment based on a Sobol sequence; collecting multi-scene data of an actual vehicle, extracting typical working conditions through PCA principal component analysis and K-means clustering, and combining a Markov chain to generate random cyclic working conditions; constructing a multi-domain coupled energy flow simulation model and verifying the model; performing strategy optimization on the typical working conditions based on GWO, and combining an online working condition recognition mechanism to construct an adaptive energy management strategy; the system comprises an energy flow test module, a working condition generation module, a simulation modeling module, a strategy optimization module and a vehicle controller module. The application realizes the collaborative optimization of fuel consumption, electricity consumption and battery life, and significantly improves the energy efficiency and reliability of HEV hybrid vehicles under complex working conditions and environments.

The utility model discloses a hand pump pneumatic rocker arm device used in airplane hydraulic jack testing, and belongs to the technical field of jack testing equipment and automation control. The hand pump pneumatic rocker arm device comprises a bottom plate, a testing platform is fixedly installed at the top end of the bottom plate, a jack is installed in the testing platform, and a connecting mechanism is installed on a control arm of the jack; two sets of connecting blocks are fixedly installed on one side of the connecting mechanism, rotating bases are fixedly installed on the tops of the two sets of connecting blocks, two sets of fixing feet are arranged on the top of the bottom plate, and inclined rods are fixedly installed on the tops of the fixing feet; the rocker arm is connected with the control arm of the jack through the connecting mechanism, when the air cylinder stretches out and draws back to drive the connecting part to move, the connecting part drives the rocker arm to rotate around the rotating base, the working scene of jack pressure testing is simulated, and testing personnel can do not need manual operation; therefore, the performance data of the jack under different conditions can be quickly and accurately obtained, the labor cost is greatly reduced, and the testing efficiency is improved.

The invention discloses a TSN test bed and a test method for a railway safety computer, various tests of the safety computer can be realized based on the provided TSN test bed, including functions and performances of DO output, DI acquisition, dual-system redundant structure main / standby switching, bus expansion communication and the like, on one hand, new standards and applications are better used while the cost is reduced; on the other hand, through various tests, the safety and reliability of the railway safety computer can be guaranteed, and then driving safety is guaranteed.

The invention discloses a reduced scale similarity test platform and method for slope type gravity energy storage, and relates to the technical field of energy storage, and the platform comprises an upper warehousing system, a slope transportation simulation system, a lower warehousing system, an energy storage load-carrying vehicle, an intelligent monitoring and control system, and a multi-parameter test analysis system. Through combination of the height adjustable characteristic of the upper warehousing system and the fixed foundation of the lower warehousing system, different terrain height differences and gradient conditions can be flexibly simulated, the energy storage load-carrying vehicle is strictly designed based on the physical similarity theory, accurate correspondence of dynamic characteristics between a reduced scale model and a prototype is ensured, and the dynamic performance of the energy storage load-carrying vehicle is improved. Through cooperative work of the intelligent monitoring and control system and the multi-parameter test analysis system, real-time sensing, comprehensive data acquisition and deep analysis of the operation state of the platform are achieved, and the automation degree, the measurement precision and the research efficiency of the test are greatly improved.

The invention relates to the technical field of aircraft testing, in particular to a comprehensive avionics test bench for an electric vertical take-off and landing multi-rotor aircraft. Comprising a base, a support, a test platform, an arm test module and an upper computer. The base is connected with the bottom of the bracket; the top of the bracket is connected with the test platform; the arm test module is connected with the test platform; the base is used for fixing the test bench; the support is used for supporting the testing platform. The test platform and the arm test module are used for testing avionics of the aircraft; the upper computer is used for controlling the test mode of the test bench. According to the invention, modular design is adopted, disassembly and assembly can be realized, expansion can be realized, a group of motor assemblies can be tested, multiple groups of motor assemblies can be tested, a whole machine can be tested, power can be supplied by using a battery, an external power supply can be used, remote control and wire control can be realized, and various test requirements can be realized.

The invention discloses an unmanned aerial vehicle propeller hydraulic excitation fatigue testing device integrated with Internet of Things monitoring, relates to the technical field of testing, and aims at solving the technical problem that an existing unmanned aerial vehicle propeller testing mode is single. The device comprises a test platform, a multi-dimensional excitation mechanism is arranged on the platform, and an attitude simulation mechanism is arranged on the multi-dimensional excitation mechanism; a rigid-flexible adjusting and clamping mechanism is arranged on the pitching frame, stepless adjustment of the connecting rigidity of a clamping end is achieved by changing the physical rigidity of an adjusting section of the rigid-flexible adjusting and clamping mechanism, a sliding unit with a magnetic control jolt simulation function is further designed in the excitation mechanism, and a magnetic ball is made to suspend by controlling an electromagnetic field. High-frequency vertical jolt capable of being opened and closed freely is generated when the sliding block slides, and an unstable airflow environment is simulated. According to the invention, through organic combination of multi-dimensional excitation, all-attitude simulation, rigidity stepless adjustment and controllable jolting, multi-attitude coupling vibration and a complex airflow environment in real flight of the unmanned aerial vehicle can be accurately reproduced, and the accuracy and reliability of fatigue testing are remarkably improved.

The invention provides a CCAR-25 aircraft-oriented comprehensive modular avionics platform conformity verification method, which comprises the following steps of: accessing a modular hardware platform architecture into a system integration verification platform, and carrying out hardware cross-linking and software deployment; testing is executed step by step according to a configuration integration testing-path testing-platform service testing-robustness testing four-level conformity verification system, and testing results are recorded; s2, judging whether all the test results pass or not, if the test results do not pass, issuing a problem report according to a quality problem processing method, performing targeted optimization according to a root cause analysis result, and executing S2 again; if all the test data and the problem return-to-zero report pass, verifying the closed loop to form a verification document containing the test data and the problem return-to-zero report. The compatibility and maintainability of the system are improved through modular design, the requirement of airworthiness clauses is ensured to be met through a full-dimension verification system, and the method is suitable for the design and airworthiness verification process of a CCAR-25 transportation type aircraft comprehensive modular avionics platform.

The application relates to a CPU performance test method and application under a Conda environment, belongs to the field of computer performance evaluation and optimization, and realizes comprehensive evaluation of CPU performance in combination with LAMMPS and LLCBench tools. The method quickly builds a test platform through the Conda environment, can evaluate the computing performance and parallel processing capability of the CPU by using LAMMPS, and can test the bandwidth and delay characteristics of CPU caches (L1, L2 and L3) through LLCBench. In combination with the two tools, the method realizes comprehensive testing of the computing performance and cache performance of the CPU, has the advantages of high efficiency, repeatability and wide application range, and provides scientific support for hardware performance evaluation and optimization.

The application discloses a kind of wind-driven generator sliding yaw system test platform and test method, including main support seat, center support, yaw simulation device, axial loading device, radial loading device, driving device and control device, the yaw simulation device is fixed on center support, the center support is fixed on main support seat, the outside of the yaw simulation device is evenly distributed with multiple axial loading devices along circumference, the axial loading device is electrically connected with driving device, the outside of the yaw simulation device and between any two adjacent axial loading devices is arranged radial loading device, the radial loading device is electrically connected with driving device, the control device is electrically connected with yaw simulation device, axial loading device, radial loading device and driving device.The application has the advantages of simple structure, low cost, accurate and efficient test data, etc., by obtaining the measured value of yaw system component characteristic parameter, improve the reliability of sliding yaw system design.

The application relates to an automatic driving experiment simulation platform for a vehicle, and belongs to the field of automatic driving experiment simulation devices for vehicles. The platform can simulate a real road traffic environment, effectively verify and learn the automatic driving vehicle, and comprises a test platform and multiple loop tracks. The loop tracks are provided with movable bottom plates which can slide along guide rails, and the movable bottom plates are provided with deformable simulation baffles. The simulation baffles can move in multiple dimensions in the horizontal and vertical directions, and simulate different traffic participants and sudden situations. The platform adopts multiple devices and mechanisms, improves the flexibility and controllability of the simulation platform, and adopts electrical equipment, guarantees the durability and safety performance of the simulation platform. The platform can realize diversified simulation scenes according to the requirements and preferences of users. The simulation platform can better simulate the complex environment of actual road traffic, and is more conducive to the verification and learning of the automatic driving system.

The invention relates to the field of computer system detection and fault tolerance, and discloses a detection test platform for computer hardware development, which comprises a data acquisition and interface adaptation module, a signal feature extraction and parameter modeling module, an anomaly detection and diagnosis module, a performance evaluation and optimization module and a feedback regulation and visualization module, through multi-source signal collection and protocol adaptation, in combination with a feature modeling and anomaly detection method, the platform can monitor the running state in real time in the hardware development and test process, an optimization variable set is generated through performance evaluation and optimization decision, and finally dynamic regulation and visual presentation of the test environment are achieved. According to the method, closed-loop management of the whole hardware development and test process is achieved, and stability verification and reliability analysis of computer hardware can be effectively supported.

A QoS-aware service migration method in an IoV system based on CVX deep reinforcement learning is provided. Firstly, the optimization problem of service migration and resource allocation is decoupled into two sub-problems; then, a new actor-critic-based asynchronous-update deep reinforcement learning method is designed to explore the optimal service migration, where a delayed-update actor makes decisions of service migration and a one-step-update critic evaluates the decisions to guide the direction of the policy update; and on this basis, an optimal resource allocation method for an MEC server based on convex optimization is proposed to achieve the optimal resource allocation. According to the QoS-aware service migration method, extensive experiments are conducted based on a real-world testbed and a dataset of city vehicle trajectories, thereby verifying the feasibility and effectiveness of SeMiR. Compared with benchmark methods, the SeMiR has the best performance of service migration under various scenarios.

The invention discloses a design method of a new energy commercial vehicle battery system, and relates to the technical field of new energy vehicles. The method comprises the steps that firstly, based on a commercial vehicle frame structure and target vehicle model parameters, spatial topology planning is completed through a non-uniform grid division and topological optimization algorithm, a multi-layer stacked module architecture is generated, and the space utilization rate is made to be larger than or equal to 90%; secondly, establishing a structure-heat-electricity-vibration coupling model, iteratively optimizing design parameters through multi-physics field joint simulation, and simulating high and low temperature and strong vibration performance under severe working conditions; and finally, building a test platform combining a multi-axis vibration table and a temperature control box, simulating an actual road spectrum and temperature circulation from-30 DEG C to 60 DEG C, and verifying indexes such as vibration fatigue life and temperature change response through dynamic stress loading. According to the method, the development cycle is shortened from 6 months to 45 days, the energy density is improved by 25% compared with that of a traditional design, and the design efficiency and the full life cycle reliability of a commercial vehicle battery system are remarkably improved.

The invention discloses a functional safety-oriented vehicle intelligent electric chassis test platform and test method, and belongs to the technical field of electric vehicle test, the test platform comprises a drive-by-wire brake rack, a drive-by-wire steering rack and a chassis test cabinet; the drive-by-wire brake rack comprises a four-wheel hub motor, a four-wheel electronic mechanical brake system and a four-wheel load simulation dynamometer. The four-wheel hub motor and the four-wheel electronic mechanical braking system are coaxially integrated and coordinated to simulate the driving and braking behaviors of the intelligent electric chassis; the steer-by-wire rack comprises a steer-by-wire system and a steering resistance loading system which are connected with each other; the chassis test cabinet comprises an upper computer, a lower computer and a fault injection module; the upper computer runs chassis driving, braking and steering integrated test management software and runs a vehicle driving scene display animation at the same time, and interaction of human-computer interaction, chassis control and virtual driving traffic scenes is achieved. According to the invention, systematic comprehensive testing of the function safety mechanism of the drive-by-wire chassis is realized.

A quantum-key distributed (QKD)-enabled communication architecture it devises for networked microgrids (NMGs). A real-time QKD-enabled NMGs testbed built in an RTDS environment, and a novel two-level key pool sharing (TLKPS) strategy it designs to improve the system resilience against cyberattacks. In the QKD-based microgrid testbed design there is used a real-time power system simulator, i.e., RTDS, including the QKD modeling, hardware connection, communication network design, and QKD integration. By integrating QKD features into a real-time microgrid simulator, this testbed offers a flexible and programmable testing environment for evaluating the performance of QKD-enabled microgrids under a variety of scenarios.

A method includes obtaining a set of wireless statistics of a wireless communication device and a set of hardware-related information of the wireless communication device. The method further includes determining a set of test results of a testbed system based on the set of wireless statistics and the set of hardware-related information by configuring the testbed system based on the set of wireless statistics and the set of hardware-related information. The method further includes updating a set of decision parameters of a wireless configuration decision model using a machine learning model based on the set of test results. The method further includes sending the updated set of decision parameters to the wireless communication device, wherein the wireless communication device configures a wireless configuration parameter based on an instance of the wireless configuration decision model configured with the updated set of decision parameters.

This invention discloses a highly efficient ground-based deployment verification device for flexible solar arrays, belonging to the field of spacecraft testing technology. The device includes an air-floating test platform fixed to the ground, an air-floating comparison platform above it, two magnetically levitated platforms located on the front and rear sides of the air-floating test platform respectively, a first hydraulic mechanism for driving the magnetically levitated platforms to rise and fall, a test solar array, a comparison solar array, and corresponding first and second mounting mechanisms. Through the synergistic effect of the air-floating platform and the magnetically levitated support mechanism, this invention can simulate the solar array deployment process under microgravity conditions in space with high fidelity on the ground, achieving accurate observation of attitude, velocity, and synchronization, and supporting simultaneous or comparative testing of two solar arrays, significantly improving testing efficiency and reliability.