47 results about "Dynamic load testing" patented technology

The invention relates to the technical field of data processing, and provides a dynamic load test method and device for a chiplet, and the method comprises the steps: collecting transient heat flux data generated by the chiplet in a multi-frequency load switching process to generate a thermal dynamic behavior map, calculating a thermal coupling interference index map according to the thermal dynamic behavior map, and carrying out the testing of the dynamic load of the chiplet according to the thermal coupling interference index map. And inputting the thermal coupling interference index diagram into a preset thermal stability mapping matrix, and generating a small chip dynamic load behavior evaluation parameter group. By inputting the transient heat flux data into the preset thermal stability mapping matrix to generate the small chip dynamic load behavior evaluation parameter group, the thermal stability and the overall performance of the small chip are improved, and the problem that in practical application, the prior art depends on single thermal monitoring data, and thus the reliability of the small chip is improved is solved. And when the load switching frequency is relatively high or the load disturbance is relatively large, the potential thermal coupling interference and the influence of the potential thermal coupling interference on the system performance cannot be accurately identified.

The invention relates to the technical field of direct-current deicing device tests, and provides a dynamic load test method and system for a direct-current deicing device. Comprising the following steps: generating a load sudden change sequence comprising ice layer falling positions, ice layer falling thicknesses and load impedance fluctuation time sequence data corresponding to a plurality of load sudden change time periods according to operation state data of a direct current ice melting device in an ice layer non-uniform melting scene; according to a preset dynamic load response mechanism comprising an adaptive adjustment power protection trigger threshold value and a control system time delay threshold value, bus voltage response simulation is carried out on each load abrupt change time period in the load abrupt change sequence in sequence to obtain a direct current bus response time sequence data set; and carrying out anti-disturbance capability analysis on the direct-current ice melting device by combining a preset anti-disturbance capability evaluation threshold value to obtain an anti-disturbance capability evaluation result. Based on dynamic simulation of load mutation caused by uneven melting of an ice layer and influence of the load mutation on bus voltage response, comprehensiveness and reliability of disturbance rejection evaluation of the direct-current ice melting device are improved.

The invention discloses a dynamic load test method and system for a short message communication system, and relates to a data processing technology, and the method comprises the steps: dividing a data message into a plurality of priority categories in advance; acquiring data messages in a plurality of historical emergency scenes, and classifying the data messages according to priority categories; performing clock alignment on the classified data messages of each secondary node, and selecting a data message sample of a typical time period; extracting the message characteristics of each data message in any typical time period, endowing the corresponding message characteristics with weights according to the priorities of the data messages, and constructing a dynamic load generator by using LSTM (Long Short Term Memory); extracting message features in the current emergency scene and inputting the message features into the dynamic load generator; and performing comparison based on the output of the dynamic load generator and the load condition of the current communication system so as to complete the dynamic load test. The method is used for dynamically allocating the channel resources according to the dynamic load test result and exposing the potential resource bottleneck of the system in advance.

The invention provides a dual-redundancy R-EPS steering system electronic power unit performance detection device, and relates to the technical field of steering system testing. The control unit is in communication connection with the upper computer; the actuating mechanism comprises a programmable load motor, the control end of the actuating mechanism is connected with the control unit, and the output end of the actuating mechanism is connected with a motor output shaft of the tested electronic power unit; the sensing feedback module comprises a plurality of sensors used for collecting operation parameters of the tested electronic power unit, and each sensor is connected with the control unit; the fault simulation module is integrated in the control unit, and the output end of the fault simulation module is used for connecting a fault injection node of the tested electronic power unit; wherein the programmable load motor, the sensing feedback module and the fault simulation module form an integrated test system for performing dynamic load test and active fault injection test on the tested electronic power unit under the coordination of the control unit. High integration and automation of the detection process can be realized, and the test efficiency and consistency are improved.

This invention relates to the field of wind tunnel aerodynamic measurement technology for hypersonic vehicles, and discloses a method for evaluating and optimizing the dynamic load testing accuracy of a wind tunnel force measurement system. The evaluation method involves: equating the force measurement system to a multi-degree-of-freedom spring and mass model; constructing a dynamic differential equation and performing a Laplace transform; then, combining the dynamic stiffness matrix to construct a frequency response function matrix; defining the output of the force measurement channel of a rod-type strain balance and solving for the transfer function from the excitation point to the force measurement channel; combining the reference transfer function and the actual load, calculating the identified load and performing a Fourier transform to obtain the relative identification error of the force measurement system at the excitation point; finally, calculating the power spectrum weighted average identification error at the excitation point and comparing it with the engineering allowable error to determine whether the system has undergone stiffness optimization. This invention not only accurately identifies the dynamic load of the force measurement system but also achieves stiffness optimization, improving the accuracy of unsteady aerodynamic force measurement.

The invention provides a dynamic load testing method and device, electronic equipment, a medium and a program product, and can be widely applied to the technical field of testing. According to the method, the access state of the tested object is simulated through the test tool according to the target test parameter, and after the first performance index in the access process is received and collected, the target test parameter and the first performance index are input into the preset machine learning model to perform load test analysis on the tested object; therefore, the test process of all the load parameters needing to be tested can be completed without continuously manually adjusting the tested load parameters, the workload of manual adjustment and interference factors introduced in the manual adjustment process are reduced, and the test accuracy is effectively improved.

An aircraft structure dynamic loading testing device, including a nozzle, an attachment mechanism with a first portion attached to the nozzle such that a nozzle force direction is constrained at a set orientation and a second portion for attaching to the aircraft structure and configured to be constrained at a given orientation with respect to the aircraft structure, and a length of conduit. In use, fluid is supplied along the length of conduit to the nozzle and ejected from the nozzle such that the nozzle exerts a dynamic force on the aircraft structure in the direction of the nozzle force direction. A dynamic loading testing device, a kit of parts and methods of dynamic load testing of a structure are disclosed.

The present invention provides an underwater vehicle model pulsating load testing device and a testing method, belonging to the field of ship and ocean engineering testing. It includes an underwater vehicle model, a circulating water channel, connecting components, supporting components and fixing components. The connecting components include a head connecting rod and a tail connecting rod, which are respectively arranged on the head and tail sides of the top of the underwater vehicle model. Both the head connecting rod and the tail connecting rod are connected to the supporting components, and the supporting components are connected to the side wall of the circulating water channel through the fixing components. The head of the underwater vehicle model faces the oncoming flow direction of the circulating water channel, the sail of the underwater vehicle is arranged vertically upward, and the sail is located between the head connecting rod and the tail connecting rod. A fairing is sleeved outside the sail. An acceleration sensor and a pressure sensor are arranged on the underwater vehicle model. It is mainly used for pulsating load testing of the underwater vehicle model under different working conditions.

The invention belongs to the technical field of bearing detection, and provides a bearing detection table dynamic load test device for vehicle production, which comprises a detection table, the detection table is fixedly connected with a support frame, the upper end surface of the support frame is fixedly connected with a motor, and an elastic assembly for damping the motor is arranged between the motor and the support frame. An output shaft of the motor is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with a sleeve, and a limiting mechanism used for positioning the electric telescopic rod is arranged outside the electric telescopic rod. According to the invention, the regulation and control system can position and adjust the motor by controlling the elastic assembly, the limiting mechanism, the positioning assembly, the suction assembly and the water circulation system, and meanwhile, the regulation and control system adjusts the connection stability between the electric telescopic rod and the thin-wall bearing.

The present invention provides a multi-degree-of-freedom underwater vehicle hull area pulsating load test device and test method, belonging to the field of marine ship testing technology. The problem that the existing device cannot realize the pulsating load test of the hull area of ​​the underwater vehicle is solved. It includes a circulating water tank, an underwater vehicle model, a fairing, a connecting rod, a supporting rod and a positioning iron block. The underwater vehicle model is arranged inside the circulating water tank and the head of the model faces the incoming flow direction of the circulating water tank. The underwater vehicle model is flipped so that the hull of the underwater vehicle model faces downward; the fairing is installed on the underwater vehicle model, and the hull is completely immersed in water. The immersion depth and pitch angle of the underwater vehicle model are adjusted by adjusting the position of the supporting rod passing through the circular hole on the connecting rod, and the flow angle of the underwater vehicle model is adjusted by changing the angle between the supporting rod and the side wall of the circulating water tank. The present invention can complete the pulsating pressure and vibration acceleration test of the hull area of ​​the underwater vehicle under different working conditions.

The application discloses a multi-axle rock dynamic and static load testing machine, relates to basalt fiber new material rock detection, and comprises a testing machine body and a testing platform fixedly installed at the middle part of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applicator; wherein the dynamic pressure applicator carries out dynamic load testing on the fiber new material rock of the testing platform surface through adjustable speed impact and vibration; static load assemblies are arranged on the front and back sides of the testing machine body, and the static load assemblies comprise static pressure applicators; wherein the static pressure applicators move at a uniform speed. The multi-axle rock dynamic and static load testing machine processes multiple testing surfaces of new material rocks through a positioning mechanism and a dust removal mechanism, avoids damage of rock particles to stress points, simultaneously carries out testing and detection on new material rocks through dynamic and static load testing in a staggered distribution mode, and improves data accuracy and testing efficiency.

The utility model discloses a dead pet carcass sealing bag bearing strength inspection device, which comprises a detector main body, the bottom of the detector main body is provided with a bag shaking mechanism, the detector main body comprises a base, a support rod, an equipment box, a tension sensor, a hook and a controller, the support rod is fixedly arranged on the upper end face of the base, and the equipment box is arranged on the upper end face of the base. The equipment box is fixedly installed at the top of the supporting rod, the tension sensor is installed at the lower end of the equipment box, the hook is fixedly installed at the lower end of the tension sensor, and the controller is installed on the equipment box; the rotating shaft is fixedly installed on an output shaft of the gear motor. The device has the advantages of static and dynamic load testing and multiple safety protection, and solves the problems that only static testing can be carried out, operation is inconvenient and safety protection measures are lacked in a traditional detection method.

This invention relates to the field of coal mine roadway support technology, and provides a laboratory dynamic load evaluation method for the rock control effect of sprayed support materials in coal mines. The method includes: acquiring a first set of mechanical response data and a second set of mechanical response data under dynamic load testing, wherein the first set of mechanical response data originates from rock samples treated with sprayed support materials, and the second set of mechanical response data originates from rock samples not treated with sprayed support materials; calculating multiple physical and mechanical evaluation indices based on the first and second sets of mechanical response data; and determining a comprehensive evaluation level to characterize the rock control effect of sprayed support materials in coal mines based on the multiple physical and mechanical evaluation indices and a trained comprehensive evaluation model. This invention solves the problem that existing static testing methods are insufficient to effectively evaluate the rock control effect of sprayed support structures under dynamic loads, thus achieving a scientific evaluation of the rock control effect of sprayed support materials.

This invention relates to the technical field of inverter testing systems, and particularly to a full-scenario energy feedback inverter testing system, comprising a scenario simulation unit, an energy feedback inverter testing platform unit, a data acquisition unit, a control unit, a data analysis unit, and a comparison unit. The scenario simulation unit includes a load simulation module, an environment simulation module, and a power grid simulation module. The load simulation module uses mechanical equipment to simulate various loads of different sizes on a motor under different operating conditions, enabling dynamic load testing of the inverter. The environment simulation module, through the setting of an environmental simulation chamber, precisely controls environmental parameters such as temperature, air pressure, and vibration intensity within the chamber to test the inverter's starting performance and the reliability of its components. It comprehensively simulates various complex operating conditions, accurately tests the inverter's performance under different conditions, provides rich data for subsequent analysis, and provides a strong basis for product optimization and selection, thereby comprehensively improving the level of inverter R&D, production, and application.

The invention discloses a multi-axis rock dynamic and static load testing machine, and relates to basalt fiber new material rock detection, the multi-axis rock dynamic and static load testing machine comprises a testing machine body and a testing platform fixedly mounted in the middle of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applying device; wherein the dynamic pressure applying device is used for carrying out a dynamic load test on the fiber new material rock on the surface of the test platform through speed-adjustable impact and vibration needles; static load assemblies are arranged on the front side and the rear side of the testing machine body, and each static load assembly comprises a static pressure applying device; wherein the static pressure exerting device moves oppositely at a constant speed. According to the multi-axis rock dynamic and static load testing machine, a plurality of test surfaces of new material rocks are treated through the positioning mechanism and the dust removal mechanism, the situation that stress points are damaged by rock particles is avoided, meanwhile, test detection is conducted on the new material rocks through staggered dynamic and static load tests, and the data accuracy and the test efficiency are improved.

The utility model discloses an oil cylinder dynamic load testing device which is characterized in that the oil cylinder dynamic load testing device comprises a controller and a testing assembly which is controlled by the controller and used for oil cylinder dynamic load testing, and the testing assembly comprises a testing frame used for bearing an oil cylinder and a detecting portion which is installed above the testing frame and exerts pressure on the oil cylinder. The detection part comprises a guide column, a first actuator which is arranged on the guide column and is controlled by the controller, and a loading frame which is arranged on the guide column and is connected with the first actuator; through the arrangement of the device, the steps of manual operation are replaced by controller control, the dynamic load test on the oil cylinder can be rapidly carried out, the labor intensity is reduced, the automation efficiency is high, and the oil cylinder test efficiency is improved.

The invention relates to a large-span bridge ballastless track deformation rule test method adopting load replacement simulation, which comprises the following steps of: after finishing static load by using a water bag, mounting a simulator with a hydraulic cylinder and a push plate on one side of the water bag; the simulators are gradually started through the controller, so that the hydraulic cylinders stretch out until the push plates abut against the water bags till all the push plates on the simulators abut against the water bags; a controller controls a hydraulic pump to push out hydraulic cylinders on all the simulators at the same speed, then the hydraulic cylinders rapidly contract, and after the water bag deviates towards the simulators and makes contact with a push plate, the controller is started to push out the hydraulic cylinders; when the water bag swings according to the set frequency, the dynamic load is measured, after measurement is completed, the hydraulic cylinder is started to enable the push plate and the water bag to make contact with each other and move together, the telescopic speed of the hydraulic cylinder is reduced to enable the water bag to completely stop swinging, and the water bag static load testing device has the advantage that the water bag can be used for static load testing and dynamic load testing.

The invention relates to a rock climbing plate dynamic load detection device based on impact, and the device comprises an impact hammer which is configured to be a metal cylinder, and the front end of the impact hammer is provided with a hemispherical silica gel pressure head; the rock plate to be tested is used for receiving the impact of the impact hammer; the rigid calibration block is configured as a rigid cushion block with certain rigidity and uniform and flat thickness and is used for receiving the impact of the impact hammer; the pressure sensor is fixedly mounted in the impact hammer, is mounted between the silica gel pressure head and the metal cylinder and is used for acquiring a force value signal of the silica gel pressure head during impact; and the handheld terminal is in communication connection with the pressure sensor through the transmission module so as to display the peak force of the impact in real time. According to the invention, only the same impact hammer is needed to complete two times of impact at the same height, and the true force which can be borne by the corrected rock plate to be measured can be directly calculated through the two measured values. Real-time measurement of the impact force is realized, and a standardized device is provided for safety acceptance and regular inspection in a manual rock climbing place.

The invention belongs to the technical field of intelligent manufacturing, and relates to a seamless integrated forming method for silica gel nodes and soles, which comprises the following steps: extracting data of a joint interface of the nodes and the soles from a sole prototype, evaluating the continuity of the joint interface by adopting an image analysis technology, judging a bonding strength index; if the bonding strength index is lower than a preset threshold value, the structure of the sole prototype is corrected through a hot-pressing fusion technology, and an enhanced sole assembly is obtained; performing a dynamic load test according to the enhanced sole assembly, simulating a motion scene by the test to obtain a stress distribution data set, and determining the overall stability level of the sole assembly; the overall stability level is compared with a preset standard, if the overall stability level meets the requirement, a final product is manufactured through a batch production process, and the sneaker sole meeting the precise layout is obtained.

The utility model provides a dynamic load test device and a static load test device of a wind power cabin cover safety member, comprising a support tool, a test product, a dynamic load test assembly and a static load test assembly, the test product is fixed on the support tool, and the dynamic load test assembly and the static load test assembly are arranged on the support tool. The weight or the traction equipment is connected with the safety piece through the steel wire rope to simulate and load dynamic tension or static tension, the tension sensor or the tension meter is used for adjusting loading force to ensure that the tension borne by the safety piece reaches a preset value, the pulley block is used for adjusting the direction of the force so as to load the force, and meanwhile, the test result is not influenced. Real and accurate simulation test can be realized in a limited field, the operation is simple, the safety is high, and whether the product and the internal and external structures and material states of the safety piece meet the safety standard is judged by detecting and detecting the product and the internal and external structures and material states of the safety piece under the action of certain static or dynamic tension, so that the optimal structure size of the product is determined.

The utility model relates to the technical field of load testing, and discloses a dynamic load testing device, which comprises a fixed bottom plate, the top of the fixed bottom plate is fixedly connected with a mounting frame, the top of the fixed bottom plate is provided with a protection assembly, the top of the fixed bottom plate is fixedly connected with a limiting column, and the limiting column is provided with a clamping groove. A hydraulic rod is fixedly connected to the top of the inner wall of the mounting frame, an extrusion plate is fixedly connected to the output end of the hydraulic rod, a pressure sensor is fixedly connected to the inner wall of the fixed bottom plate, and a placement plate is fixedly connected to the top of the pressure sensor. The motor drives the driven gear to rotate, so that the driving gear rotates, the lead screw is driven to rotate, the threaded seat moves downwards, the sleeve and the fixed block are driven to move, the transparent protective cover moves downwards to shield a test area, and a closed test environment is formed. The dangerous conditions such as fragment splashing caused by extrusion damage of an object in the testing process are avoided, and the safety in use is improved.

The invention relates to a hard alloy friction and wear testing machine, and relates to the technical field of hard alloy materials, the hard alloy friction and wear testing machine comprises a friction mechanism, a detection mechanism is arranged in the friction mechanism, a temperature control mechanism is arranged in the friction mechanism, and the left side of the detection mechanism and the friction mechanism are mounted; the bottom of the temperature control mechanism is fixedly connected with the friction mechanism; the friction mechanism comprises a bottom plate, a top plate is arranged at the top of the bottom plate, a servo motor is fixedly connected to the top of the top plate, a ball screw is fixedly connected to an output shaft of the servo motor, a sliding block is fixedly connected to the outer side of the ball screw, and an upper machine shell is fixedly connected to the front face of the sliding block. And an upper sample is mounted at the bottom of the upper shell. The device has the advantages that the testing precision and stability in the high-pressure and high-temperature environment are improved, the loading system is high in response speed, the dynamic load testing requirement can be met, the measuring efficiency is improved, and the device adapts to the rapid testing requirement of large-batch samples.

The present invention discloses a method and device for dynamic load simulation testing of a mooring winch, which relates to the technical field of mooring winch simulation testing. The method comprises: retrieving historical working condition data associated with the target working scenario of the mooring winch, analyzing and constructing a typical load working condition set; obtaining design working condition information, and constructing a design load intensity sequence based on mapping rules; traversing the intensity sequence, matching and generating an initial test sequence in the typical working condition set; applying random perturbations to N typical load working condition segments, and iteratively optimizing through an optimization algorithm to obtain an iterative test sequence; smoothing the load switching points of the sequence, and inputting them into a simulation test device to perform dynamic load testing. This achieves the technical effects of diversifying test scenarios, simplifying parameter settings, improving matching with actual working conditions, and enhancing test accuracy.

The invention discloses a high-precision dynamic load testing device for a power management chip, relates to the technical field of chip testing, and solves the problems that a traditional testing device is difficult to completely capture voltage change details in a full period of load jump and cannot provide accurate data support for chip design optimization. According to the invention, through a timeline integration strategy of ''a reference time period + a front and back extension time period'', a complete period of current jump and voltage response is completely covered; the time delay confirmation center locks the most accurate voltage valley value point through valley value traceability verification, and calculates the time delay in combination with the end moment of the reference time period, thereby breaking through the problem of fuzzy time node judgment in the traditional test, accurately screening out the chip with the delay exceeding the standard, and guaranteeing the response timeliness of the chip in a rapid load switching scene.

The utility model belongs to children's article safety detection equipment field especially relates to a baby carrier dynamic load testing testing machine, including support platform, support shell, connecting seat, manikin and screw rod etc.

The invention discloses an assembling process and a production method of a bamboo chip tray, and relates to the technical field of bamboo wood processing. The process comprises the steps of bamboo chip preparation (cutting, green and yellow removal and chamfering and polishing), bamboo chip treatment (drying or nitrogen protection carbonization), connection and fixation (code nail, straight nail and screw synergistic reinforcement) and structure optimization (double-layer cross lamination and metal reinforcing plate pre-embedding). According to the production method, the quality is ensured through X-ray flaw detection and dynamic load testing. The bamboo chip tray has the high-strength characteristic that the static bearing capacity is larger than or equal to 2000 kg, and the dynamic bearing capacity is larger than or equal to 800 kg, and due to the 0.1-0.3 mm compact layer formed through nitrogen carbonization, the mildew-proof grade of the bamboo chip tray reaches the GB / T 18261-2013 II grade. By adopting the bamboo-plastic composite material, the plastic consumption can be reduced by 30%, the production period is shortened by 50%, and the yield is greater than or equal to 95%. The modular design is suitable for multi-scene application of industrial logistics, cold-chain transportation and the like, and the maintenance cost is reduced by 40%. The problems that a traditional bamboo tray is low in strength, prone to mildew and the like are solved, and the bamboo tray is environmentally friendly and economical.

The invention discloses a motor bearing dynamic load testing device based on double-shaft coupling, relates to the technical field of bearing testing, and is obviously different from a conventional bearing load testing mode in that a semi-linkage structure is formed by a power output shaft, a joint shaft and a power detection shaft, so that the acquisition process of subsequent rotation parameters is facilitated; through cooperative work of the first sliding table, the second sliding table and the third sliding table, the dynamic load of the motor bearing is accurately tested, power output and detection are more flexible through the design of a semi-linkage structure, response characteristics of the motor bearing under different load conditions are accurately captured, and through arrangement of multiple detection assemblies and an axial polarization detection assembly, the detection accuracy is improved. The test comprehensiveness and accuracy are further improved, the working states of the motor bearing in different action environments are simulated through active interference of the pulse action assembly on the ball head rod, powerful support is provided for performance evaluation and optimization of the motor bearing, and the accuracy of test data in the test process is improved.

The utility model discloses bridge column pile critical dynamic load test equipment, which relates to the technical field of bridge construction, and comprises a device main body, a first inhaul cable, a second inhaul cable, a connecting block and a sliding block, the bottom of the device main body is provided with rollers, and the top of the device main body is provided with a first winch; the first winch is connected with the connecting block through a first inhaul cable, a testing ball is arranged at the bottom of the connecting block, the second winch drives the second inhaul cable to be wound, then the second inhaul cable can pull the testing ball to move backwards, the testing ball is attracted and fixed by the electromagnet, and the testing ball is clamped and fixed by disconnecting a buckle for connecting the testing ball with the second inhaul cable. The electromagnet power supply is switched off, the test ball loses magnetism and is fixed and swings through the two first inhaul cables, so that the surface of the column pile is impacted for testing, the distance between the two sides of the test ball is controlled through the two first inhaul cables with the same length in the swinging process of the test ball, and the test ball is prevented from deviating from a test point in the swinging process.

The invention discloses a gas turbine-power generation system dynamic load testing device and a control method, and belongs to the technical field of power equipment testing. The device adopts a modular design, comprises a gas turbine, a power generation load module, a compressed air load system and a sensor monitoring system, and can realize continuous dynamic response in a wide power range of 0-200kW. The control method comprises the stages of starting, normal operation, load switching and safety protection, exhaust cooling control and the like, and various operation modes can be simulated. The device solves the problems that a traditional device is lagged in dynamic response, high in energy consumption, lack of multi-energy cooperative control and the like, has the advantages of being high in energy utilization rate, fast in dynamic response (the adjusting time is smaller than or equal to 20 seconds), safe, reliable and the like, and can be applied to power system testing in the fields of aerospace, ship power, distributed power generation and the like.