10 results about "Direct test" patented technology

The invention discloses a power distribution device parameter setting system and method based on online learning and digital twinning, which are used for solving the problem of multi-parameter collaborative setting of a direct test loop. The system acquires operation data such as voltage, current and temperature of an actual test loop in real time through the data acquisition module; the real-time data is transmitted to the digital twinning module through the Internet of Things cloud module, the real-time data is compared with the output of the digital twinning module, and parameters are dynamically corrected by adopting a self-adaptive algorithm; the test loop parameters subjected to dimensionless processing serve as optimization variables, differential equations output by a digital twin module serve as constraint conditions, an optimization function with the purpose of minimizing the difference between the TRV characteristic parameters and the standard values is constructed, parameter optimization and simulation verification are carried out, output is carried out through a control terminal, and accurate setting of the test parameters is achieved. According to the invention, electrical, thermodynamic and electromagnetic characteristics under different test conditions can be comprehensively simulated, and the repeated debugging times and time required by a traditional method are greatly reduced.

The invention relates to a method for testing the shear loading rigidity of calibration equipment, which comprises the following steps of: calculating the first shear loading rigidity of the equipment under different cylindrical steel sample loading test conditions by adopting a direct test method; calculating the second shear loading rigidity of the equipment under a rock simulation fault friction test condition by adopting an indirect test method; at the initial stage and the final stage of loading, comparing the first shear loading rigidity of the equipment with the second shear loading rigidity of the equipment in the same tangential force range, and judging whether the second shear loading rigidity of the equipment is a final calibration value of the shear loading rigidity of the equipment or not; if yes, taking the second shear loading rigidity of the equipment as a final calibration value; otherwise, indirect testing is carried out again. A direct test method is introduced as a reference standard, and the shear loading rigidity obtained by an indirect test method under a real friction sliding working condition is verified, so that reliable calibration of the shear loading rigidity of test equipment is realized.

The invention relates to the field of camera testing, and particularly discloses a camera module uniform heating test box, which comprises a bottom plate capable of absorbing heat of a first heater and transmitting the heat into a box body; the shell covers the bottom plate, the shell and the bottom plate define the inner space of the box body, the shell is provided with an interface which is in butt joint with the second heater, and the top of the shell is provided with a light-transmitting plate; and the positioning tool is arranged on one surface, corresponding to the interior of the box body, of the bottom plate, so that the camera module is fixed above the bottom plate, and a gap for air to pass through is reserved between the camera module and the bottom plate. The technical scheme has the beneficial effects that the bottom plate can uniformly conduct heat into the box body, the second heater can introduce hot air into the box body through the interface, the hot air can cover each area of the module when flowing and is matched with an air gap between the module and the bottom plate, local overheating caused by direct contact between the module and the bottom plate is avoided, and the service life of the module is prolonged. The problem that the temperature of the module is not uniform in a traditional test is effectively solved, and direct testing can be carried out in the heating process.

The invention discloses a method for constructing a digital twinning system of a direct test loop of a power distribution device, and belongs to the technical field of high-voltage electric appliance test and digital twinning. The method comprises the following steps: constructing a physical entity and a digital model of the test loop, and determining electrical parameters and physical structures of all elements in the loop; the domain and boundary conditions of the model are solved based on open source finite element software, and the electric field of the circuit breaker is calculated through an adaptive grid; test data are collected and fused with simulation data, and a twinborn database is constructed; key feature parameters are selected from a twinborn database, physical parameter values of all feature points in a certain on-off state are combined into a feature vector, the on-off degree of the circuit breaker corresponding to the state serves as a target value, a complete training sample is formed, a GA-BP neural network model is constructed, and the neural network model is trained. According to the invention, multi-physical field simulation, state prediction and operation optimization of the test loop are realized, and high-fidelity simulation, dynamic optimization and safety controllability of the test process are realized.

The invention relates to the technical field of integrated circuit testing, in particular to a test optimization method for a three-dimensional stacked integrated circuit, which comprises the following steps of: constructing a theoretical total cost model, setting algorithm parameters, initializing a population, executing differential evolution global search and self-adaptive multi-strategy local search. According to the method, the theoretical total cost model for correcting the discarding cost deviation is constructed, and the hybrid enhanced differential evolution algorithm fusing dynamic reverse learning and adaptive multi-strategy local search is designed, so that the direct test cost is reduced, the potential discarding risk caused by manufacturing parameter fluctuation is effectively controlled, and the method is suitable for popularization and application. Therefore, the total cost of the comprehensive theory of the three-dimensional stacked integrated circuit is reduced, the global exploration and local development capabilities of the algorithm are balanced by using a hybrid enhancement strategy, and the search process is effectively prevented from falling into local optimum; and efficient and robust optimization of the three-dimensional integrated circuit test process under complex constraints is realized.

The application discloses a power distribution device parameter setting system and method based on online learning and digital twinning, which is used for solving the problem of direct test loop multi-parameter collaborative setting. The system collects real-time operation data such as voltage, current and temperature of the actual test loop through a data acquisition module; the real-time data are transmitted to a digital twinning module through an Internet of Things cloud module, compared with the output of the digital twinning module, and dynamically corrected by using an adaptive algorithm; the test loop parameters after dimensionless processing are used as optimization variables, the differential equation output by the digital twinning module is used as a constraint condition, an optimization function with the minimum difference between the TRV characteristic parameters and the standard value as the target is constructed, parameter optimization and simulation verification are carried out, and the output through a control terminal realizes accurate setting of test parameters. The application can comprehensively simulate electrical, thermodynamic and electromagnetic characteristics under different test conditions, and greatly reduces the number and time of repeated debugging required by the traditional method.

This invention relates to the field of vehicle testing technology, specifically disclosing an automated method for testing a real vehicle cockpit. This invention achieves closed-loop control throughout the entire process, from action execution and quality assessment to dynamic adjustment, improving the adaptability and accuracy of the testing system while reducing manual intervention costs. Furthermore, this invention offers high testing efficiency; testing can begin immediately after parameter changes and adjustments, and testing time is short, allowing for 24-hour testing. Compared to manual testing, it eliminates the need for a large investment in testing personnel and equipment. After the initial platform-based test cases are developed, only a small amount of manpower is required for adaptation, significantly saving costs. In addition, during the testing process, relevant images and audio files are saved on the computer and can be printed to the test report via CAPL scripts for easy viewing and problem analysis.

The application discloses a load and probe connection positioning system for power amplifier module testing and a calibration method, relates to the technical field of connection positioning, and has the following principle: when the probe moves downward, a camera collects images in real time, the posture of the power amplifier module is judged by analyzing the contact profile, and if the posture is normal, direct testing is completed; if there is only horizontal deviation, testing is performed after realignment; if there is warping, different pressures are repeatedly applied to correct and eliminate the warping, multiple detection and analysis are performed to improve the trend, and continuous circulation optimization is performed until the posture is normal; if the posture cannot still be effectively adjusted, an alarm is sent. The application converts artificial experience judgment into quantitative calculation based on area, position and shape by means of real-time collection of the camera and algorithm analysis, constructs a module posture abnormal coefficient model, and accurately distinguishes various states; a hierarchical intelligent calibration mechanism is adopted to differentially process, closed-loop feedback is formed by combining trend improvement analysis, calibration accuracy is ensured, and test efficiency is significantly improved.

The invention provides a method for determining a proportionality coefficient of a horizontal reaction coefficient of foundation soil, which comprises the following steps of: pouring a test pile to ensure that the perpendicularity deviation of the test pile is less than or equal to 1 percent; a counter-force beam is arranged on one side of the fender post to form a counter-force device; arranging a load applying device between the counter-force device and the test pile; and determining the proportionality coefficient of the horizontal reaction coefficient of the foundation soil by adopting a single multi-cycle loading method. By means of the technical scheme, accurate load data acting on the test pile can be obtained through direct testing, the problem that loading of the horizontal load test is difficult is solved, and the value of the proportionality coefficient m of the horizontal resistance coefficient of foundation soil can be obtained through data recording, curve drawing, analysis and calculation after loading.

This invention discloses a test device for the internal flow characteristics of a cryogenic liquefied natural gas (LNG) storage tank, comprising a vacuum pump, a vacuum pipeline, a test chamber, a test pipeline, and a support skid. The test pipeline is located outside the test chamber and connected to it, and both the test chamber and the test pipeline are mounted on the support skid. The test chamber, from the outside in, includes a vacuum chamber, a liquid nitrogen cooling screen, and an LNG inner chamber. The outer surface of the LNG inner chamber is equipped with an electric heating element, and a temperature sensor is installed inside. The vacuum chamber works together to form a vacuum-insulated environment, the liquid nitrogen cooling screen is used to cool the LNG inner chamber, and the electric heating element is used to heat the LNG inner chamber. The vacuum pump is connected to the vacuum chamber of the test chamber via a vacuum pipeline. This invention enables direct testing of the internal flow characteristics of LNG and other multi-component cryogenic mixed working fluids, solving the problem that existing technologies cannot reproduce real-world operating conditions; it also achieves precise control of boundary heat flux, improving test accuracy; and it can accurately capture flow field characteristic parameters.