6317 results about "Test bench" patented technology

Systems, methods, apparatus and software can be implemented to provide a debugger agent, either separate form or integrated into the script-based testing platform, to coordinate the selection, activation, and or / operation of debuggers suitable for a particular unit and program under test. Such a debugger agent can provide run time monitoring and debugging activities where previously not possible. The debugger agent is generally independent agent, in that it can work with a variety of types of test scripts, test script handlers, programming languages, and debuggers without customization. Moreover, implementation generally needs no code instrumentation.

A computer implemented apparatus and method that automates the entry, modification, analysis, and generation of test benches from electrical circuits, both of which are specified as hardware description language (HDL) files. The computer implemented-method and apparatus also provides a unique mechanism that blends entry and display of timing requirements that must be met by the electric circuit.

Measured values obtained from a running test of an object to be tested and a module on a test bench such as a flat belt type chassis dynamo, and computation based upon numerical models of components other than the object to be tested and the module, are related to each other so as to reproduce a condition near to an actual running condition, for the object to be tested and the module so as to precisely analyze how the object to be tested and the module affects upon the motion of the overall vehicle during actual running of the vehicle. Thus it is possible to evaluate dynamic characteristics of respective vehicle components and a module which relate to the maneuvering performance of the vehicle, on a test bench in a condition in which a load variation and an alignment variation are taken into consideration.

The embodiment of the invention provides an in-loop rapid simulation test system of an unmanned vehicle. The system comprises: a virtual simulation test subsystem used for generating a virtual test scene and transmitting a pavement state control instruction to a test bench control subsystem; the test bench control subsystem used for simulating a pavement state, as well as estimating the driving performance of the unmanned vehicle according to driving parameters of the unmanned vehicle; and an unmanned vehicle control subsystem used for performing driving control on the unmanned vehicle according to the virtual test scene. The above system adopts the simulation test mode of combining the virtual reality technology with the hardware in-loop, so that a controllable, repeatable and effective in-loop rapid simulation test of the unmanned vehicle can be achieved indoors; and furthermore, all extreme or special road conditions are exhausted as much as possible, so that the safety and the reliability of the unmanned vehicle before start off can be fully guaranteed. The embodiment of the invention further provides an in-loop rapid simulation test method of the unmanned vehicle.

The inveniton relates to a method and system of automatic testing of electric automobile charging facilities. The testing method comprises the following steps that a device to be tested is connected to a detection platform; the device to be tested is detected according to a testing project; data detected by the detection platform are collected; collected data are analyzed; an analyzing result is output. Compared with the prior art, the method of automatic testing of the electric automobile charging facilities can conduct comprehensive testing on functional characteristics and performance indexes of an alternating current charging pile, a non-vehicle-mounted charger , a charger module and the like. Intelligentized centralized control is adopted, combination and batch execution of multiple testing projects can be achieved, a whole testing process can be executed by a centralized control platform automatically, and after testing is finished, a test report is generated automatically. A testing device can be used independently, and can be integrated to achieve systematic testing, and post-maintenance and post-calibration can be conducted conveniently. The method and the system of automatic testing of the electric automobile charging facilities can construct a fixed testing platform or a vehicle-mounted mobile testing platform.

The invention discloses a hybrid power assembly performance matching test bench which comprises an engine, a clutch, a speed changer, an engine controller ECU, a power generating / motor-driven integrated motor ISG, a motor controller IPU, a power battery pack, a battery management system ECU, a vehicle controller HCU, a DC converter DC / DC, a shift mechanism, a clutch pedal, a brake pedal, an accelerator pedal, two dynamometers, a bench control system and a rapid control prototype dSPACE. The test bench has the advantages that the entire vehicle state is simulated on an engine test bench, the main parts of the hybrid power system, the power battery pack, the BCU, the HCU, the IPU and the DC / DC are arranged by simulating the entire vehicle state, the sturcture is compact, the testing programis simple, the performance matching of the hybrid power assembly can be easily realized on the test bench, and NEDC and other condition tests can be conducted by simulating the entire vehicle.

A machine learning module may generate a probability distribution from training data including labeled modeling data correlated with reflection data. Modeling data may include data from a LIDAR system, camera, and / or a GPS for a target environment / object. Reflection data may be collected from the same environment / object by a radar and / or an ultrasonic system. The probability distribution may assign reflection coefficients for radar and / or ultrasonic systems conditioned on values for modeling data. A mapping module may create a reflection model to overlay a virtual environment assembled from a second set of modeling data by applying the second set to the probability distribution to assign reflection values to surfaces within the virtual environment. Additionally, a test bench may evaluate an algorithm, for processing reflection data to generate control signals to an autonomous vehicle, with simulated reflection data from a virtual sensor engaging reflection values assigned within the virtual environment.

The invention relates to a state recognition and prediction method for a spindle characteristic test bench based on deep learning, which comprises the steps of collecting vibration signals in the operating process of the spindle characteristic test bench, performing normalization processing on the vibration signals, performing noise reduction processing on the normalized vibration signals by adopting EEMD (Ensemble Empirical Mode Decomposition) to obtain IMF components, and reconstructing the obtained IMF components to form restored signals; enabling the restored signals to serve as input samples of a CNN, performing feature extraction on the restored signals to obtain feature vectors, carrying out CNN feature learning on the feature vectors to obtain training feature samples; coding timeinformation for the training feature samples through a multi-layer LSTM (Long Short Term Memory), carrying out classification through Softmax logistic regression to obtain prediction feature samples,and realizing prediction for the operating state; and performing Softmax logistic regression through the training feature samples and the prediction feature samples, carrying out classification on a logistic regression layer so as to judge the fault type of a rotor rotation test bench system, and realizing state recognition. The state recognition and prediction method has fast response performanceand tracking performance.

The invention relates to a driving simulation test method in the field of a power system of an electric automobile. In the method, a speed curve part, a power calculating and matching part, a data processing part, a dynamometer, a vehicle road impedance realization part, an accelerator output part, a brake output part, a shift operation part and the power system are combined, and the corresponding functional modules are integrated; by setting target speed-time parameters, technical parameters of different vehicles and the like and calculating and matching the power of the whole vehicle, different commands such as rotating speed, torque, accelerator, brake, clutch, shift and the like at different speeds are obtained, and components on a test bench of the power system of the electric automobile perform corresponding actions so as to complete driving simulation tests under different predetermined road conditions and different vehicle models; and analysis can be performed according to the acquired and recorded related data after the tests are finished so as to obtain the related performance analysis report of the power system and complete the driver driving simulation test on the test bench of the power system of the electric automobile.

The invention belongs to the technical field for testing photovoltaic grid-connected inverters, in particular to a test bench for testing various performance indexes of a photovoltaic grid-connected inverter. The test bench uses a photovoltaic battery array simulating power supply as the input source of the inverter so to displace the original real photovoltaic battery array, and uses a grid characteristic stimulating power supply to displace a large-power resistor load. The photovoltaic battery array simulating power supply can set the needed weather conditions like illumination, environment temperature, wind speed and the like conveniently, output a V-I (voltage-current) curve conforming to the requirements, and overcome the shortages that the real photovoltaic battery array has multiple uncontrollable factors and the installation and maintenance are not convenient. The grid characteristic stimulating power supply can simulate the characteristics like a grid voltage, a frequency, background harmonic waves and the like, can detect the working performances of the inverter under different grid states, and can feed back the output electric energy of the inverter to a public grid, so that the electric energy loss is reduced.

The invention discloses a three-dimensional model testing system of tunnel water outburst and mud outburst and grouting treatment. The three-dimensional model testing system comprises a test bench, a ground stress loading system, a water supply system, a grouting system and a monitoring system, wherein a space filled with a dense medium, a fault medium and a surrounding rock medium is formed in the test bench, the dense medium is located on the periphery and the bottom of the internal space of the test bench, the fault medium and the surrounding rock medium are located in a concave space formed by the dense medium, the fault medium is located at the middle part of the surrounding rock medium, the water supply system is arranged on a gravel filter layer at the top of the fault medium, the ground stress loading system is located on the top of the surrounding rock medium, the grouting system stretches to a tunneling position in the surrounding rock medium from the bottom of the test bench, the monitoring system comprises a plurality of sensors which are arranged at the boundary of the fault medium and the surrounding rock medium and in the fault medium and are connected with an external display device of the test bench. The invention further discloses a testing method using the system.

The invention relates to a position adjustable multi-hob rotary cutting test-bench. The soil warehouse base fixed on the soil warehouse and a rectangular base fixed on the ground frame are supported by a looping support and looped by two hydraulic motors synchronously. Periphery of the soil warehouse is provided with flanges, which is provided with four guiding pillars evenly and four hydraulic cylinders; the four hydraulic cylinders driven synchronous vertical position into the soil to the campaign from the four columns to orientation and direction of torque transmission. 6 shelves uniform foundation column layout, fixed a column to open the top 4 at the top ring groove of the frame, forming a rectangular frame; connected at the top of the bottom bracket has three slide rail and the knife block, plate hob installed in the Seat knife. Using IPC test, data acquisition cards, the pressure of the flow velocity sensor, dynamic strain gauge, high-speed digital camera system on the cutting process of geotechnical monitoring. The test-bench is mainly used for the multi-hob and rotary cutting of rock mechanical properties of the relevant test.

The invention relates to a multi-parameter compound environment tester comprising a centrifuge for simulating a linear acceleration environment and an environment chamber arranged on the arm of the centrifuge, wherein the environment chamber is used for simulating a vibration acceleration environment, a noise environment, a temperature environment and an air pressure environment; a noise generation mechanism, a temperature control mechanism, a vibration generation mechanism, an air inlet and an air outlet are arranged in the environment chamber; the vibration generation mechanism comprises a test bench, a bench push rod and a corrective push rod fixed on the test bench, a supporting reed and a sensor; the chamber wall of a compound chamber is hermetically connected with the push rods; the bench push rod is connected with a vibration-bench moving coil; and the corrective push rod is connected with a corrective mechanism capable of preventing the vibration generation mechanism and the vibration-bench moving coil from excessively translating. The invention has the advantages of comprehensive simulation of work environment for devices, good test effect and high precision.

The invention relates to an automobile stability parameter test bench and a test method using the same, which are used for integrally testing automobile mass parameters, centroid position parameters and anti-tipping angle parameters. The automobile stability parameter test bench of the invention comprises a measuring platform, four platform balances, platform supporting columns, a foundation, three hydraulic cylinders, an inclination angle measuring device, hydraulic sensors, a pump station and a computer, wherein the four platform balances are installed on the measuring platform and are supported by a weighting sensor; the supporting points of the platform supporting columns are distributed in rectangular peaks; the foundation is used for bearing the supporting columns and the platform; the three hydraulic cylinders are arranged between the platform and the foundation and can enable the platform to incline longitudinally or laterally; the inclination angle measuring device is fixed on the platform; the hydraulic sensors are installed in the positions of the upper cavity and the lower cavity of the two hydraulic cylinders which enable the platform to incline longitudinally; the pump station is connected with the hydraulic cylinders; and the computer is used for acquiring and calculating the data of the weighing sensor, the oil pressure of the hydraulic cylinders and the inclination angle data of the platform. Compared with the existing test equipment, the invention can finish tests of automobile total mass, axle loads, wheel loads, centroid positions, anti-tipping angles and the like, so that the test workload and the test cost of the parameter tests are greatly reduced.

The invention provides a plane type ejection launch carrier-borne aircraft front undercarriage static force test loading apparatus. The apparatus comprises a plane type test bench rack, an undercarriage, a lateral load loading device, a course load loading device, a vertical load loading device, an ejection load loading device, a hamper load loading device and a mooring load loading device. Based on a conventional loading technology, a set of loading equipment capable of applying ejecting, hampering and mooring loads is designed, and the vertical, course, lateral, ejection, hampering and mooring load loading of an ejection launch carrier-borne aircraft is finished on a single test bench, no replacement of tools is needed, all the loading points are fixed in the frame type test bench, a self-balance bearing system is formed when loading is performed, the bearing of the test bench is quite small, the fixation is facilitated, and the precision is high.

The present invention relates to test table for driving motor of hybrid electric vehicle to finish capability test of driving motor of hybrid electric vehicle and debugging function of control software. The table system has simple structure, convenient operation and maintains and high test precision. When the grades of motor and load voltage are identical, the system can work parallel with DC generatrix and feed back energy, the energy lose is less, the power supply need to provide system loss energy is about 10% to 20%, the cost is reduced greatly and the requirement of capacity of power supply is little. When the grades of motor and load voltage aren't identical, two complexions are happened, when motor is as driver, energy is applied to load resistance box by dynamometer system or power supply; when the motor is as generator, the energy is applied to load resistance box by power supply.

The invention discloses an automatic testing device of a circuit board. The automatic testing device comprises a testing platform, a feeding device installed on the testing platform and a detecting device, wherein the testing platform is provided with a reclaiming position, a testing position and a discharging position; the detecting device is arranged at the testing position and used for detecting the circuit board at the testing position, the feeding device comprises a driving device fixedly connected with the testing platform, a first grabbing part and a second grabbing part both which are moveably connected to the driving device, the first grabbing part is used for moving the circuit board from the reclaiming position to the testing position under driving of the driving device, and the second grabbing part is used for moving the circuit board from the testing position to the discharging position under driving of the driving device. According to the automatic testing device, the testing efficiency of the circuit board can be improved, and ensured in steadiness.

The invention discloses a comprehensive performance test bench for a planetary roller screw. A driving assembly provides power for the planetary roller screw; a test assembly is used for mounting a planetary roller screw of a different model; a hydraulic loading assembly is adopted to carry out dynamic and static loading on a planetary roller screw nut, load borne by the planetary roller screw during actual work is simulated, and a force closed loop is adopted to ensure accuracy of the loading force. The test bench is provided with a torque sensor, an angle encoder, a circular magnetic grating, a grating ruler, a LVDT, and a force sensor. Measurement on torque, an angle, displacement and force is realized through the sensor. Through analyzing the test data, test on performance of the position precision, the speed, the acceleration, the transmission efficiency, the transmission clearance and the axial stiffness of the planetary roller screw of the different model in the load state can be completed. The test bench has the advantages of simple and flexible structure, thorough and accurate test performance parameters, high loading precision and strong test scalability.

The invention discloses an automatic deformation screening machine for pins of connector housings. The automatic deformation screening machine comprises a vibrating disk mounting rack, a vibrating disk, a vibrating feeding channel, a test bench, a pushing mechanism, a feeding manipulator, a detecting mechanism, a first delivery manipulator, a qualified product delivery channel, a second delivery manipulator and an unqualified product collecting tank. When the pins of the connector housings are detected, the vibrating disk regularly conveys the connector housings to a feeding station A at the tail end of the vibrating feeding channel in a shaking process; the pushing mechanism conveys the connector housings to an appointed sucking and feeding station B; the feeding manipulator conveys the connector housings to a detecting station C; the pins of the connector housings are detected by the detecting mechanism; when the pins are good in quality and do not deform, the first delivery manipulator is used for adsorbing the pins to a first unloading station D, and the qualified product delivery channel discharges the pins; and the second delivery manipulator is used for clamping the pins to a second unloading station E and putting the pins into the unqualified product collecting tank when the pins of the connector housings deforms.

The invention relates to a test system for an automatic driving vehicle. A real vehicle data collection module is used for collecting control data; a test bench is used for generating a reaction forceaccording to the control data and scene information and obtaining state data of an automatic driving vehicle according to the reaction force; a scene model establishing module is used for establishing a traffic scene model, a traffic flow model, an automatic driving vehicle dynamics model and an environment perception sensor model and obtaining position data of the automatic driving vehicle; andan evaluation module is used for calculating a return value for evaluating the running state of the automatic driving vehicle according to the position data and the state data. By combining the test bench with a scene model comprising traffic flow data, the environment recognition capability, the dangerous condition recognition response time and the processing mode of the automatic driving vehiclecan be more truly tested, and the safety and the stability of the autonomous recognition capability under a complex traffic environment can be more truly tested.

A system for testing both simulated and real versions of an integrated circuit (IC) includes an IC simulator, a simulator manager, an IC tester, and a tester manager. The IC simulator simulates response of the IC to a set of simulated IC input signals by producing a set of simulated IC output signals. The simulator manager, programmed by a user-supplied test bench file, provides the simulated IC input signals to the simulator during the simulation. During the simulation, the simulator manager also generates a set of waveform data sequences, each representing periodically sampled values of a corresponding one of the simulated IC input and output signals. The IC tester includes a separate channel corresponding to each real IC input and output signal. The tester manager converts the waveform data sequence corresponding to each simulated IC input and output signal to a separate set of instructions provided as input to a corresponding one of the IC tester channels. When testing the real IC, each IC tester channel corresponding to a real IC input signal responds to its input instructions by generating and supplying to the IC an input signal having the sequence of values indicted by the waveform data sequence representing the corresponding simulated IC input signal. Each IC tester channel corresponding to an IC output signal responds to its input instructions by periodically sampling the corresponding IC output signal to determine whether the IC output signal has the sequence of values indicated by the waveform data sequence representing the corresponding simulated IC output signal.

The invention provides a test bench of a traction inverter. The test bench comprises a user terminal, an Ethernet switch, a control case and a main circuit test circuit, wherein the user terminal sends a control instruction to the control case or a DCU case through the Ethernet switch and acquires feedback results of the control case or the DCU case through the Ethernet switch; the Ethernet switch forwards data between the user terminal and the control case and between the user terminal and the DCU case; the control case performs an electrical performance test on the DCU case according to the control instruction sent by the user terminal by the Ethernet switch or triggers the main circuit test circuit to perform the electrical performance test on the main circuit of the traction inverter according to the control instruction sent by the user terminal through the Ethernet switch; and the main circuit test circuit performs the electrical performance test on the main circuit of the traction inverter according to a trigger of the control case and returns the feedback results to the control case. The invention further provides a test system for testing the traction inverter.

A multifunctional pneumatic reciprocating sealing performance test bench comprises a servo electric cylinder. The servo electric cylinder is installed on a workbench through a positioning cushion block. A servo electric cylinder drive rod is connected to a piston rod of a test air cylinder through a hinge. The test air cylinder is installed on a pair of precise ball sliding blocks through a fixing plate. The precise ball sliding blocks are installed on a precise guide rail fixed to the workbench. The other end of the test air cylinder is connected with one end of a tension and pressure sensor through a flange, the other end of the tension and pressure sensor is fixed to the workbench through a first supporting piece, and a grating scale displacement sensor is installed on the workbench below the tested piston rod. According to the multifunctional pneumatic reciprocating sealing performance test bench, friction force and the leakage rate of pneumatic sealing can be comprehensively measured, and the multifunctional pneumatic reciprocating sealing performance test bench has the advantages of being simple in structure, easy and convenient to mount and dismount, accurate in measurement, various in test function and the like, the air cylinders are convenient to control, and different structures of sealing rings can be changed.

The invention discloses a brake-by-wire and steer-by-wire hardware-in-the-loop test bench for a vehicle. The test bench integrates a brake-by-wire system and a steer-by-wire system into a whole, and is divided into a software part, a real-time platform, a signal processing part and a hardware part, wherein the real-time platform consists of a host and target machines 1 and 2; the host and the target machines 1 and 2 are connected by a wireless network communication system; the signal processing part consists of first and second data acquisition cards with the model of PCL-818HD, third and fourth data acquisition cards with the model of PCL-727, a fifth data acquisition card with the model of PCI-6601 and a V / F conversion module; and the hardware part comprises a rotary angle sensor (12), a torque transducer (13), an opposite rotary motor (16), a steering resistance sensor (21), a steering actuating motor (18), an EMB actuator controller, and EMB actuator, a clamping force sensor, a revolution transmitter and a current sensor.

In the VCD-On-Demand system, the EDA tool has the following attributes: (1) RCC-based parallel simulation history compression and recording, (2) RCC-based parallel simulation history decompression and VCD file generation, and (3) On-demand software regeneration for a selected simulation target range without simulation rerun. When the user selects a simulation session range, the RCC System records a highly compressed version of the primary inputs from the test bench process. The user then selects a narrower region, the simulation target range, within the simulation session range for a more focused analysis. The RCC System dumps the hardware state information of the hardware model into a VCD file. The RCC System then allows the user to proceed directly to view the VCD file from the beginning of the simulation target range without having to rerun the entire simulation from the beginning of the simulation session range.

An open system for multiple discrete, geographically disperse simulation engines to communicate with each other across a distributed electronic network, such as the Internet, comprises a portal accessible to the simulation engines over the network. Local portions of the simulation may be run separately by each simulation engine, and the output data files are stored on and managed by the portal. A co-simulating engine may request an output data file stored by the portal and use that data as input for its downstream portion of the simulation. In this fashion, multiple geographically disperse simulation engines can test bench their designs in an open, network centric simulation environment.

The invention discloses a multi-angle drop-hammer impact testing device. The multi-angle drop-hammer impact testing device comprises a test bench for fixing a test specimen, a drop-hammer assembly and a lifting mechanism, wherein the drop-hammer assembly is correspondingly arranged above the test bench by the lifting mechanism; the test bench comprises a test bench main body and an angle adjustment mechanism for adjusting the rotation of the test bench main body, and the drop-hammer assembly is kept to correspond to the test specimen on the test bench main body by a hammer adjustment mechanism. The invention also discloses the test bench of the multi-angle drop-hammer impact testing device using the structure. The test bench main body rotates by a preset angle by the angle adjustment mechanism, so as to simulate the impacts from different angles; the drop-hammer assembly is allowed to impact the test specimen from different angles, and the impacts comprise front-surface impact, the offset impact and the lateral impact, so that the material mechanical properties of the test specimen can be analyzed from different impact angles, and the flexibility and universality of the drop-hammer impact test are greatly improved.

The invention discloses a test bench of the comprehensive performance of an air spring, and belongs to the technical field of vehicle engineering. The test bench can effectively achieve the aims of carrying out the vertical, transverse and twisting tests of the air spring at the same time and simulating the actual working states of the air spring. A rack of the test bench is in a four stand column type, a bearing platform is arranged in the middle of the rack, a device for bearing balance weight is arranged above the rack, a sensor is arranged below the rack, each stand column of the rack is provided with a cone-shaped fixing nut, a vertical hydraulic actuator which is arranged in a plane triangle mode is arranged below a workbench, and the volume of an additional air chamber is adjustable. The influence to the dynamics performance of the air spring by regional environment with different temperatures can be simulated by an external air conditioner system, multi-dimensional simulation is applied to the air spring through a shock excitation source, changes of loads and deflection of the air spring under the conditions with different environment temperatures and physical parameters are measured, and parameters such as dynamic stiffness, static stiffness, damping ratio and transfer ratio of the air spring are calculated through parameters of vibration characteristics. The test bench is mainly used for testing the comprehensive performance of the air spring.

The invention provides a reconfigurable lead screw pair and guide rail pair accelerated life electro-hydraulic servo test bench which is characterized in that two lead screw bearing seats of a T-shaped table between two guide rail mounting tables on a base are provided with lead screws connected with a motor; guide rails on the guide rail mounting tables are matched with guide rail sliding blocks; guide rail sliding block backing plates on the guide rails, a grating bar reading head on one guide rail mounting table and nut bases on the nuts of the lead screws are connected with the bottom of a stressed sliding table; one side of the stressed sliding table is meshed with a gear at the end part of the output shaft of a magnetic powder brake through a gear rack; the other side face of the stressed sliding table is opposite to a force application wheel of a transverse loading mechanism; and the upper part of the stressed sliding table is opposite to a force application wheel of a vertical loading mechanism. The test bench provided by the invention can be used for realizing the accelerated life test of three-way dynamic loading of multiple types of lead screw pairs and guide rail pairs, collecting test data required for evaluating the residual lives and degradation mechanisms of the lead screw pairs and the guide rail pairs in real time, and providing more reliable test basis for the design and maintenance of the lead screw pairs and the guide rail pairs.

The invention relates to a universal automatic testing and fault diagnosis system which is characterized in that a universal automatic testing platform, input-output equipment and an interface adaptor are included, the input-output equipment is connected with the universal automatic testing platform, tested communication equipment is connected the universal automatic testing platform through a corresponding equipment testing adaptor, the universal automatic testing platform comprises a zero-slot controller and testing instruments, the zero-slot controller is provided with a testing system and a fault diagnosis expert system, the testing system is used for carrying out initial setting on the universal automatic testing platform and the interface adaptor during automatic testing and sending testing orders and testing parameters to the testing instruments according to testing needs, the testing instruments transmit corresponding testing signals to the tested communication equipment for testing through the interface adaptor according to the testing orders and the testing parameters, testing result signals of the tested communication equipment are fed back to the testing instruments through the interface adaptor, the testing system collects the signals of the testing instruments and carries out processing and analyzing, if testing results are not qualified, the fault diagnosis expert system carries out intelligent fault diagnosis, and fault is located to the plate level.