50 results about "Test figure" patented technology

The invention discloses a multi-modal data driven commercial vehicle frame performance prediction method and system. The method comprises the following steps: uniformly coding design variables of a frame; constructing a multi-modal performance response data set based on finite element simulation and test results of mass production vehicle models, and realizing fusion of simulation and test data by adopting a maximum mean difference and related alignment algorithm; constructing a graph perception Transform multi-task prediction model fusing the structure topology and the physical position features, and predicting key performance indexes of the frame under a plurality of typical working conditions; through weighted multi-task loss function joint training, an uncertainty mechanism is introduced to dynamically adjust task weights; and after training is completed, deploying to an inference engine to realize second-level prediction and support increment fine adjustment updating. According to the method, repeated modeling and solving processes are avoided, the frame performance prediction efficiency and the adaptive capacity are remarkably improved, and the method is suitable for rapid evaluation of the frame performance of commercial vehicles of various structural configurations and material types.

The invention discloses a transformer arc fault equivalent test device and a control method, and relates to the technical field of power equipment fault simulation and safety test, and the method comprises the steps: carrying out the corresponding high-pressure gas storage through a high-pressure gas storage unit according to target pressure data calculated by a choking flow dynamic coupling model; the quick release unit is used for matching fault duration according to the test trigger instruction so as to release the high-pressure gas stored in the high-pressure gas storage unit; the energy injection unit injects high-pressure gas into the test oil tank to form shock waves; the safety protection unit starts an interlocking protection mechanism based on the test data; the monitoring control unit controls each unit to act, monitors the operation process of each unit in real time, and obtains and identifies the validity of test data to optimize the test process; according to the invention, automatic test process control is realized, the arc fault key damage effect can be accurately quantified and reproduced, high-precision matching of pressure wave time domain characteristics is realized, and the reliability of a test result is ensured.

The invention relates to the technical field of oil product performance tests, in particular to a small portable detection tester control method, device and equipment and a storage medium, and the method comprises the steps: obtaining a detection instruction; acquiring spectral characteristics of the test article in real time; outputting a rapid cooling signal based on the detection instruction; whether the test article is solidified or not is judged in real time based on the spectral characteristics; and if the test article is solidified, stopping outputting the rapid cooling signal and outputting a first slow cooling signal. The method has the advantages that the automation degree can be improved, the accuracy of test results is improved, and time waste is reduced.

The invention provides an aeronautical equipment task reliability assessment method based on prior information, and the method comprises the steps: determining the minimum sample demands of a task reliability test under different failure samples according to the technical demands of aeronautical equipment task reliability assessment and the characteristics that the data of the aeronautical equipment task reliability assessment are distributed in a Bernoulli test result; determining available test samples according to existing prior information of the aviation equipment, analyzing data characteristics, and setting beta distribution as prior distribution; according to the number of historical serious quality problem samples of the equipment, a supplementary test profile design is determined according to a task reliability test technology, and a subsequent supplementary test implementation scheme is designed; and according to a supplementary test result of subsequent supplementation, in combination with the Bayesian theorem, a posterior density function is determined, and a task reliability level under a corresponding confidence condition is given, so that the problems that a conventional task reliability evaluation model is not applicable and the demand quantity of supplementary test samples is large are solved.

The invention discloses an automatic construction method of a simulation-test data fusion database for a drawing process. According to the method, aiming at the characteristics of large plastic deformation, complex stress-strain distribution, remarkable microstructure evolution and the like of a material in a drawing process, automatic data analysis and batch processing scripts are developed in combination with multi-scale finite element simulation data and a limited number of drawing test data, global macro-micro physical field variables and time sequence information are extracted in batches, and a large-scale drawing process is established. Constructing a relational database of multi-level indexes; an error function of a simulation result and a test result is established, a target function is constructed through DTW, optimal parameter correction target variables are solved through trust domain Bayesian optimization, and dynamic correction and automatic updating of simulation data in a whole process window are achieved; the finally constructed database can completely record drawing process parameters, mold geometry, space-time coordinates and physical field evolution information, supports rapid retrieval and accurate traceability, and provides reliable data support for process optimization, quality prediction and intelligent control of the drawing process.

The invention discloses a method for quickly reducing the cooling temperature of a sample in a low-temperature impact test, which is characterized by comprising the following steps of: putting the sample into a low-temperature tank of an impact testing machine, adding alcohol to submerge the sample by more than 25mm, opening an air valve, slowly introducing liquid nitrogen, and keeping for a certain time after the temperature is reached, so as to ensure that the temperature is uniform. The invention aims to provide the method for quickly reducing the cooling temperature of the sample in the low-temperature impact test, and the method has the characteristics of high cooling rate, simplicity in operation, easiness in popularization and the like, and can meet the requirements of daily urgent test, completion of the test in a short time and provision of a test result.

The utility model discloses a static load test block safety protection device, which belongs to the technical field of constructional engineering detection auxiliary equipment, and is characterized by comprising a base, the front side and the rear side of the base are both fixedly connected with a protection assembly, the top of the base is fixedly connected with a detection assembly, and the detection assembly comprises a fixed support. The problems that an existing static load test detection device is poor in protection effect, when a test block is broken due to pressure in an actual static load test, generated fragments have large impact force and speed, the fragments cannot be prevented from flying around due to the lack of an effective protection structure, and the service life of the test block is prolonged are solved. The problems that in the prior art, surrounding operators are hit by splashed fragments, personal safety is endangered, surrounding detection instruments, recording equipment and the like are possibly damaged, test data are lost or inaccurate, reliability of test results is affected, and practicability of the device is reduced are solved.

The utility model discloses a universal elasticity modulus detection platform, the platform is composed of an upper platform, a lower platform and a shock absorption layer between the upper platform and the lower platform, the upper platform is composed of a working plane, a receiver guide rail and a tool groove, soft silica gel or plastic materials are laid on the working plane, and a sample is softly supported on the working plane during testing. According to the method, the requirement for a testing method in the standard can be met, the testing requirements of large samples and special-shaped samples which cannot determine node positions can be met, meanwhile, the problem that small samples shift in the testing process is solved, the samples can be directly placed on a testing platform in the testing process, operation can be conducted, and testing steps are simplified; the receiver guide rail is arranged on the test platform, the damping layer is arranged between the upper platform and the lower platform, and the supporting legs with the damping pads are arranged between the lower platform and the equipment placing platform, so that the influence of environmental vibration on a test result is reduced to the greatest extent, and measurement errors caused by environmental factors are avoided.

The utility model relates to the field of automobile inspection, concretely relates to a fall pit simulation test device. The device includes acceleration section, fall pit and deceleration section, acceleration section is at least 200m, fall pit pit depth is at least 120mm, pit width is at least 1000mm pit length is greater than test car width at least 400mm, pit edge chamfer is R10, deceleration section is at least 60m. This test device can be applied to the fall pit test of vehicle, and the strength of vehicle is tested and verified, and the application of the utility model can be based on user use scene data, and test result can very good reflect the use demand of user, and standard test device and operation process can provide stable boundary for design, and according to statistical result, a test is adopted to replace multiple tests, and the verification efficiency is very high, and the acceptance standard is refined, and strong support is provided for the consistency evaluation of test.

The invention belongs to the technical field of test equipment, and discloses a centrifugal constant acceleration tester and a centrifugal constant acceleration test method. According to the centrifugal constant acceleration tester, a plurality of test stations are uniformly distributed in the circumferential direction of a rotating arm, each test station is provided with a translation assembly, the output end of each translation assembly is provided with a rotating assembly, the output end of each rotating assembly is provided with a countertop, and a test piece is installed on the countertop; the translation assembly drives the test piece to radially move along the rotating arm, and the mounting radius can be flexibly adjusted according to size parameters and acceleration gradient requirements of the test piece, so that the acceleration of the test piece is accurately controlled; the rotating assembly can measure the weight loaded on the countertop and adjust the direction of the test piece, the function of automatic leveling of the rotating arm can be achieved, the leveling precision is high, the manual debugging time is shortened, the test convenience is improved, the test efficiency is remarkably improved, and the accuracy and reliability of a test result are improved.

The utility model relates to a testing device for testing the precipitation compaction characteristic of overlying strata separation grouting slurry, which comprises a slurry precipitation compaction characteristic testing assembly, a testing machine and a control system, and is characterized in that the testing machine comprises a compaction assembly and a base; the slurry drainage compaction characteristic test assembly comprises a sample barrel, the sample barrel is placed on the base and used for storing slurry, a drainage base is arranged at the bottom of the sample barrel, and a drainage channel is arranged in the drainage base; the water guide pipe is communicated with the drainage channel; the flow meter is connected to the water guide pipe, and a digital display water meter is arranged on the flow meter and used for monitoring water flow changes and providing real-time flow data; the control system is electrically connected with the testing machine and used for controlling the compaction assembly of the testing machine to pressurize the slurry. The test device can be used for carrying out compaction characteristic test research on overlying strata separation layer grouting slurry under different pressures, and the bearing capacity of a slurry consolidation body is evaluated based on test results, so that a reasonable basis is provided for grouting filling design.

The application discloses a follow-up loading test device, which comprises a foundation and left and right vertical columns on the foundation, wherein a test piece assembly, a radial loading actuator, a limiting cylinder, a sliding guide rail, a motion limiting structure, a wire pulling sensing device, a first pulley mechanism, a second pulley mechanism and an axial motion actuator are sequentially arranged between the right and left vertical columns; the axial motion actuator is controlled to work through a servo controller; the piston in the test piece assembly is moved through the pulling of the second pulley mechanism and the first pulley mechanism, and then the projectile is ejected. The application can meet the actual working conditions of some equipment or mechanism, the load borne by the equipment or mechanism changes with the change of the motion posture or the spatial position of the equipment or mechanism, when the test simulation verification is carried out, the test environment is highly consistent with the actual working conditions, and the accuracy, the reliability and the dynamic response capability of the test results are improved.

The utility model discloses a standard test block for calibrating a depth measurement dynamic error of a hamburger rut testing machine, belongs to geometric quantity measurement testing equipment, and aims to solve the technical problem of how to effectively calibrate the dynamic error of a depth measurement system of the hamburger rut testing machine. According to the technical scheme, the test block comprises a test block body, an arc groove part is formed in the center of the upper side face of the test block body, a zero reference plane is arranged on one side of the arc groove part, and identification scale marks are arranged on the other side of the arc groove part; spiral adjusting knobs are respectively arranged at the central positions of two end parts of the test block main body, and handles are respectively arranged at the central positions of two side surfaces of the test block main body.

The invention belongs to the technical field of digital reliability evaluation research, and particularly relates to a multi-source test data fusion calculation method based on simulation credibility. The method comprises the specific steps that simulation test data and real installation test data are collected, and compatibility analysis is conducted on the data based on the mean value and the variance of the simulation test data and the real installation test data; respectively extracting variance credibility and mean value credibility from the compatibility analysis result, and calculating simulation credibility; counting test success times in the simulation test data, and constructing success times service binomial distribution; carrying out statistics on the number of successful tests in the real installation test data, and constructing successful number service binomial distribution; obtaining posterior distribution of the simulation data through a Bayesian method and the simulation test data; calculating mixed prior distribution by using simulation credibility and simulation data posterior distribution; and based on the mixed prior distribution, the posterior weight and posterior distribution of the real installation test data are calculated, and the posterior distribution is a fused test result.

This invention discloses a test device and method for testing the bearing capacity of profiled steel sheet group nails. The test device includes a top frame and a bottom frame for supporting the profiled steel sheet. A temporary fixing device is provided between the top and bottom frames. Loading equipment connection devices are provided on the upper side of the top frame and the lower side of the bottom frame. A data acquisition device connected to the profiled steel sheet is provided on one side of the top / bottom frame. This invention can effectively prevent the adverse effects on the profiled steel sheet caused by the relative displacement of the frame during the installation of the test device, avoid the additional load generated by direct clamping of the loading end, and improve the accuracy and reliability of the test results. In addition, the test equipment is easy to install, simple to operate, and reusable, which greatly reduces the test cost, improves resource utilization, and has a broad application market and good development prospects.

The application provides a ship model resistance test result evaluation method based on time series random truncation, and specifically comprises the following steps: S1: collecting a time series TS0 in a ship model resistance experiment to obtain a corresponding resistance-time curve; S2: obtaining a time series TS1 by using a resistance mean value R0 of the time series TS0; S3: obtaining a sample time series TSi by periodically truncating the time series TS1; S4: judging whether the sample time series in S3 is a valid sample time series; S5: performing convergence evaluation on the valid sample time series obtained in S4; and S6: outputting a class A uncertainty UF corresponding to RF. The application not only improves the richness of the sample time series, but also greatly improves the accuracy of the test result of the ship model resistance experiment under the collection of a limited length time series.

The application belongs to the technical field of penetration test, and discloses a non-normal penetration test device for a multilayer structure and a use method thereof, which comprises a test table body, a plurality of target body fixing clamps and a plurality of target bodies. The test table body is horizontally arranged, the plurality of target body fixing clamps are sequentially and spacedly arranged along the long axis center line of the test table body, and the plurality of target bodies are respectively installed at the top ends of the target body fixing clamps. The target body fixing clamps are used for clamping and fixing the target bodies and can adjust the horizontal angle and the pitch angle of the target bodies. The long axis center line of the test table body is sequentially provided with the plurality of target body fixing clamps, and the horizontal angle and the pitch angle of the target bodies are adjusted by the target body fixing clamps, so that the actual target angle of the projectile body can be truly simulated, and the authenticity and accuracy of the penetration test result are ensured.

The application relates to the technical field of nuclear power, in particular to a model optimization method and device, computer equipment and a storage medium. The method comprises the following steps: obtaining a to-be-nested model and test data corresponding to the to-be-nested model; wherein the test data comprises a test working condition, data labels and a test result; updating an initial model in initial analysis software based on the to-be-nested model; updating a model enabling condition corresponding to the initial model in the initial analysis software based on the data labels; obtaining an analysis result of the updated initial analysis software under the test working condition; and optimizing the to-be-nested model based on the analysis result and the test result. The application can optimize the model in the analysis software, so as to improve the calculation accuracy of the analysis software.

The invention provides an initiating explosive device impact sensitivity test method and system. The method comprises the following steps: carrying out an impact sensitivity test on an initiating explosive device and obtaining test data; when the number of tests reaches a preset activation threshold value and the impact sensitivity test enters a mixed result area, executing a kernel function dynamic selection process; training a Gaussian process regression model by using the selected optimal kernel function to obtain an ignition probability distribution fitting curve of the initiating explosive device in the current test period; calculating an estimated value of a stimulus logarithm corresponding to a group of preset key ignition probability points through a piecewise linear interpolation method, and obtaining a corresponding stimulus estimated value; and calculating the relative change rate of the estimated value of each key ignition probability point. The impact sensitivity test device has the beneficial effects that test parameters are dynamically adjusted through real-time feedback of an impact sensitivity test process and intelligent monitoring of a test result, so that the test frequency is remarkably reduced, the sample consumption is reduced, and the precision and reliability of the test result are improved.

The application discloses a kind of test result analysis systems of flexible direct current control protection system, it is related to power management technical field, including intelligent fault diagnosis and classification module, dynamic simulation and prediction module, abnormal event link tracking module, fault recovery path optimization module and system robustness evaluation module.The test result analysis system of flexible direct current control protection system, by introducing fault classification model, nonlinear state space model and link tracking model, not only effectively overcome the deficiency of traditional system in fault diagnosis, simulation prediction and abnormal event tracking, also significantly improve the intelligent level and dynamic response capability of system.Make the system show higher accuracy and stability when responding to complex power failure and variable dynamic operating environment, provide solid guarantee for improving the reliability and security of power grid.

The present invention discloses a method and device for a foundation bearing capacity test based on physical modeling, which belongs to the field of foundation bearing capacity tests. The method comprises: S1, taking foundation soil materials and a measurer; S2, preparing a foundation structure in the model box and fixing the measurer in a predetermined position; S3, providing a strip base on the surface or inside of the foundation structure; S4, providing a load applying device in the model box and rigidly connecting the same to the strip base so as to apply a load; S5, hoisting and fixing the model box in the centrifuge, applying a centrifugal force according to a predetermined flow, and collecting the measurement results of each measurer; after reaching a preset condition, applying a load on the foundation structure until a target termination condition is reached, and collecting relevant data; and S6, ending the test. The present invention can achieve the similarity of the mechanical characteristics of the reduced-scale physical model by means of physical modeling test, providing a unique and effective foundation bearing capacity model test method, and thus effectively improving the reliability of the results of the foundation bearing capacity model test.

The application relates to the technical field of oil product performance testing, in particular to a small portable detection tester control method, device and equipment and a storage medium, which comprises the following steps: obtaining a detection instruction; acquiring the spectral characteristics of a test product in real time; outputting a rapid cooling signal based on the detection instruction; judging whether the test product appears to be solidified based on the spectral characteristics in real time; if the test product appears to be solidified, stopping the output of the rapid cooling signal and outputting a first slow cooling signal. The application has the effects of improving the automation degree, improving the accuracy of test results and reducing the waste of time.

The invention relates to the technical field of fatigue testing machines, in particular to an automatic dynamic force correction method for a fatigue testing machine, which comprises the following steps of: fixing an accelerometer between an inner ring of a force sensor and a tested sample and close to the sample; the accelerometer is used for collecting an acceleration signal a (t) of a tested sample in real time, the acceleration signal a (t) is transmitted to the control and operation module through the collection module with the sampling frequency of 1 kHz to 100 kHz, the total mass m participating in acceleration motion is determined, and inertia force calculation and test force correction are carried out. Dynamic force automatic compensation is directly carried out by measuring acceleration, complex calculation is omitted, time and labor are saved, sample stress is closer to a true value, accuracy of material test analysis and research and development is improved, the application range and precision of equipment are improved, the equipment adapts to test conditions of different frequencies, tool quality and amplitudes, equipment consistency after metering is higher, and the test efficiency is improved. And the difference of test results of different manufacturers is reduced.

The utility model relates to the technical field of quality detection, in particular to a drop hammer impact test platform which is characterized in that when the drop hammer impact test platform is used, a pipe body is placed on a supporting seat assembly, a drop hammer assembly is lifted to a certain height through a supporting frame assembly, the drop hammer assembly freely falls, and the drop hammer assembly penetrates through a round hole to carry out an impact test on the pipe body; when the drop hammer assembly rebounds and rises after impacting the pipe body, the locking assembly locks the drop hammer assembly, so that the drop hammer assembly is prevented from causing secondary impact on the pipe body, and the accuracy of a test result is improved; comprising a test bed, a box door and a controller, the box door is arranged at the front end of the test bed, the controller is arranged at the right end of the test bed, the test bed further comprises a drop hammer assembly, a locking assembly, a supporting frame assembly and a supporting seat assembly, the supporting seat assembly is arranged in the test bed, the supporting frame assembly is arranged at the top end of the test bed, and the drop hammer assembly is arranged on the supporting frame assembly. The locking assembly is installed on the test bench, and a round hole is formed in the top end of the test bench.

The invention belongs to the technical field of environmental stress tests, and discloses a digital twinning-based multi-dimensional environmental stress comprehensive test system and a control method, and the system comprises a physical test module, a digital twinning modeling module, a data interaction and fusion module, a control and scheduling module, an analysis and evaluation module, and an experiment display module. The system can simultaneously control various environmental stress generating devices, realizes synchronous and collaborative change of various environmental stress such as temperature, humidity, vibration, radiation and the like, accurately simulates a multi-dimensional complex environment faced by a product in actual use, and improves authenticity and reliability of a test result. The comprehensive test of various environmental stresses can be completed through one test, the tedious process of multiple independent tests is avoided, the test period is greatly shortened, and the test cost is reduced.

The invention provides a reliability test design method combined with a working section. The reliability test design method comprises the following steps: step 1, determining the number of samples; 2, determining a test temperature; 3, determining an application temperature; 4, determining activation energy; 5, determining an acceleration factor; step 6, determining test duration; 7, summarizing test results; according to the reliability test design method combined with the working section, the number of reliability test samples for the working section is determined on the basis of a mathematical model and a statistical theory according to the specific working section and reliability index requirements, the test duration and the number of the samples are accurately controlled, and finally time is saved and cost is reduced.

This utility model relates to the field of temperature shock testing technology and discloses a multifunctional temperature shock test chamber with a protective structure. The chamber includes a main body, a lifting assembly fixedly connected to the top surface of the main body, and a basket fixedly connected to the bottom end of the lifting assembly. Several limiting strips are provided on both sides of the inner wall of the basket. This multifunctional temperature shock test chamber with a protective structure, through the arrangement of the basket, limiting strips, and placement assembly, allows for the placement of test samples according to their size on the placement rack during use. The adjusting rod is turned to fix the test sample in place by the limiting components, and the placement rack is inserted into the limiting strips to limit the position of the test sample. This prevents the sample from changing position or falling during multiple tests or comparisons of multiple samples under thermal shock, thus maintaining the stability of the sample.