3222results about "Shock testing" patented technology

The invention discloses a valve vibration impact test method and system based on digital twinning, and belongs to the technical field of industrial equipment test and evaluation. The method comprises the following steps: firstly, deploying a multi-source sensor network, constructing a physical entity layer of a valve vibration impact test, collecting and preprocessing various physical monitoring data, and constructing a digital twinborn body layer; secondly, real-time data assimilation with a physical test bed is realized through parameter calibration and updating of a digital twinborn model based on various physical monitoring data and the digital twinborn layer; and finally, executing a virtual vibration impact test, realizing prediction and evaluation of global response and key part information of the physical entity according to a test result, and finally realizing interaction and performance prediction. And the valve vibration impact test is realized through the valve vibration impact test system. According to the method, the fault diagnosis capability, the early damage identification capability and the valve state prediction and evaluation capability can be remarkably improved, and the defect of insufficient field monitoring information is overcome.

The invention relates to the technical field of protection door testing, in particular to a method, a system and equipment for testing explosion shock wave resistance of a protection door and a medium. The method comprises the following steps: firstly, receiving position information of a to-be-tested protective door and a chemical explosive, confirming a test preparation state, and activating and verifying a connection state of a plurality of sensors arranged on the to-be-tested protective door when confirmation is completed; after the connection of all the sensors is verified to be correct, a detonation signal is sent to the chemical explosive, and chemical explosion shock waves are triggered; processing the original measurement data by using a preset abnormal value screening model, and filling data vacancy by adopting an interpolation method; finally, converting the processed chemical explosion shock wave load data into equivalent nuclear explosion shock wave load data by applying a preset conversion algorithm; the data quality is improved, and equivalent conversion from chemical explosion to nuclear explosion is realized, so that the nuclear explosion resistance of the protective door can be accurately evaluated under the condition that an actual nuclear explosion test is not carried out.

The chest structure of the simulation dummy for the bursting test comprises a thoracic vertebra assembly, and the thoracic vertebra assembly comprises an upper thoracic vertebra section, a thoracic vertebra elastic assembly and a lower thoracic vertebra section which are sequentially connected from top to bottom; the thoracic vertebra elastic assembly can generate elastic deformation when being vertically extruded, and the upper thoracic vertebra section or / and the lower thoracic vertebra section is / are provided with a thoracic vertebra acceleration sensor set used for collecting vertical acceleration information. The invention further discloses the simulation dummy for the bursting test, the dummy comprises the chest structure of the simulation dummy for the bursting test and further comprises a hip assembly arranged at the lower end of the chest structure, and the hip assembly comprises an abdomen structure and a lumbar vertebra assembly arranged on the rear side of the abdomen structure and connected with the lower end of the thoracic vertebra assembly. The abdomen structure is provided with a limiting step matched with the lower end structure of the thoracic vertebra assembly. The simulation dummy can serve as a real human body substitute to undertake a test task in places such as a bursting test and a protective lifesaving equipment test.

The invention discloses a high-temperature and high-pressure multifunctional integrated shock tube test system, belongs to the technical field of explosion and impact dynamics tests, and aims at solving the problem that an existing shock tube is usually single in function and is only used for a simulation test of a certain function. The high-pressure section and the low-pressure section of the shock tube are both made of high-temperature-resistant nickel-based alloy, an induction heater is adopted for heating, high-pressure inert gas is filled into the high-pressure section through pressure gradients of diaphragm sets with different layers of diaphragm clamping sections, high temperature and high pressure of the high-pressure section at the temperature of 20-900 DEG C and the pressure of 0.1-50 MPa are obtained, and the high-pressure shock tube has the advantages that the high-pressure shock tube is compact in structure and low in cost. The multifunctional integrated shock tube test system can be used for researching the crushing characteristics of rock materials under the conditions of different pressures, temperatures, water contents and the like, the damage characteristics of explosion shock waves in the air to a target piece and the impact damage characteristics of a high-speed projectile body. Effective methods and means are provided for related research, and the shock tube test technology and engineering application capability are expanded. The test system is easy to implement, low in cost and multipurpose.

The invention relates to the technical field of battery detection equipment, and discloses external force resistance detection equipment for a new energy battery, which comprises a detection room as a basic component of the whole device, and a detection cavity is arranged in the detection room and is used for assembling and bearing each processing mechanism and a lower structural member to which the processing mechanism belongs; and the toughened glass door is arranged at the middle upper part of the front side of the detection room, and is used for workers to go in and out of the detection room and observe the new energy battery when the new energy battery is detected. By adding and arranging the impact test mechanism, when the new energy battery is subjected to an external force resistance test, on one hand, the mechanism can accurately simulate a complex scene that a new energy automobile suffers from impact at different angles in a driving process, so that a test result and data are highly close to reality and are more authentic and representative, and on the other hand, the impact test mechanism can accurately test the external force resistance of the new energy battery. The mechanism can also truly simulate the extreme situation that the new energy battery is impacted by shock waves when the new energy automobile turns over and falls during driving, so that the battery performance can be comprehensively evaluated.

Provided in the present invention application is a test identification method and apparatus for vibration-involved dynamic parameters of a bearing pedestal and using additional masses. The method comprises: simplifying a dynamic model of a bearing pedestal into a single-degree-of-freedom system; applying an excitation force to the bearing pedestal, testing a response, plotting a frequency spectrogram, and obtaining a resonance frequency; adding additional masses to the bearing pedestal, and testing inherent frequencies under different additional masses; calculating vibration-involved masses on the basis of test results; plotting a curve of the vibration-involved masses changing with the additional masses, performing fitting by using the least-squares method, and performing extrapolation, so as to obtain a vibration-involved mass for when the additional mass is 0 and use same as a vibration-involved mass of the bearing pedestal; adding additional masses to the bearing pedestal, and testing damped vibration responses under different additional masses, so as to obtain logarithmic decrements and damping factors; plotting a curve of the damping factors changing with the additional masses, obtaining a damping factor in the same manner to use as a damping factor of the bearing pedestal, and performing calculation on the basis of the damping factor and the mass to obtain a vibration-involved stiffness coefficient of the bearing pedestal. The present invention using the solution can realize accurate identification of vibration-involved dynamic parameters of a bearing pedestal.

The invention relates to the technical field of bumper detection, in particular to an automobile bumper detection method and system, and the system comprises a rigid test bench, a multi-point adjustable impact loading module, a bumper surface deformation monitoring module, and a control and processing module. The to-be-tested automobile bumper is fixed on the test bench according to a preset mode, and the plurality of sensors are arranged based on a preset position; carrying out dynamic and static balance test on the to-be-tested automobile bumper according to the received control instruction, and carrying out corresponding index calculation; on the basis of static and dynamic test indexes, a quantitative report is generated, whether the balance of the bumper structure reaches the standard or not is automatically judged, complex static supporting and dynamic impact working conditions possibly encountered by the bumper on a vehicle can be effectively simulated in an integrated process, the static stability of the overall structure and the coordination under power impact of the bumper can be quantitatively evaluated, and the reliability of the bumper structure is improved. Therefore, the structural safety performance of the bumper can be reflected more truly.

The present invention belongs to the technical field of impact tests, and particularly relates to a catapult take-off and arrested impact test apparatus, comprising a supporting frame, an auxiliary supporting and guiding apparatus above the supporting frame, a mounting base below the supporting frame, a servo actuator, an oil circuit system, and a control and measurement system. The oil circuit system comprises an oil source, a low-pressure accumulator group, a high-pressure accumulator group, an oil inlet valve block, an oil return valve block, a servo valve block, an oil source low-pressure oil return pipe, an oil source high-pressure oil outlet pipe, and necessary tubes among components. The control and measurement system comprises a vibration and impact loading upper computer, a vibration impact controller, a static loading upper computer, a hydraulic servo controller, a servo valve, and an accelerometer. The servo actuator is internally provided with a displacement sensor. The present invention can be widely applied to conventional vibration and impact tests of various suspension launch apparatuses in a suspension-mounted state, as well as arrested impact tests under composite waveforms.

The invention relates to the technical field of engine testing, and discloses a reliability test method and system for a small general engine, and the method comprises the steps: collecting an engine vibration signal through a superconducting quantum interferometer, and collecting a temperature distribution parameter through a quantum dot temperature sensor; performing combined testing of cold and hot shock, high-load operation and random working conditions, and synchronously monitoring dynamic response characteristic data; constructing a Weibull probability model, and determining key influence factors through a global sensitivity analysis method; acquiring a surface roughness parameter by adopting a field emission scanning electron microscope, obtaining a material component parameter through energy spectrum analysis, and establishing a parameter mapping relation; establishing a vibration and temperature early warning system, executing a graded sweep frequency excitation and abrasive particle acceleration test, and recording a parameter degradation process; and generating a three-dimensional parameter cloud picture, and outputting a reliability test report. According to the method, the reliability of the small general engine can be comprehensively and efficiently evaluated, and a scientific basis is provided for design, maintenance and improvement of the engine.

The invention provides a multi-physical-field collaborative generation experiment method for a floating tunnel truncation model, and belongs to the technical field of floating tunnel tests, and the method can efficiently and accurately simulate the multi-field coupling effect of waves, ocean currents and earthquakes. And a reliable experiment means is provided for researching the dynamic response and the safety performance of the floating tunnel structure under the complex environmental load. The experimental method comprises the steps of truncation design of a full-scale ultra-long floating tunnel prototype, design of a reduced scale floating tunnel truncation model, construction of a wave-flow-earthquake multi-field input system and collection of dynamic response of the reduced scale floating tunnel truncation model. According to the invention, stable lateral earthquake input can be realized based on the existing wave-flow water channel, the influence of the earthquake effect transmitted from the cable to the tension leg type suspension tunnel pipe body on the dynamic response can be simulated, and the coupling effect of wave, flow and earthquake can be reproduced; and a wave-flow-earthquake multi-field collaborative generation experiment scheme is provided for the ultra-long tension leg type floating tunnel truncation model.

The embodiment of the invention provides a power distribution cabinet detection device, and relates to the field of power distribution cabinet detection. A power distribution cabinet detection device comprises a base, the upper end of the base is connected with a top plate, the upper end of the top plate is rotatably provided with a rotary table, a vibration detection mechanism is installed between the top plate and the base, one side of the top plate is provided with an adjusting frame, an impact detection mechanism is slidably installed in the adjusting frame, and the impact detection mechanism adjusts the detection position through sliding in the adjusting frame. The detection height is adjusted through sliding of the moving seat in the adjusting frame, the pressure block is pushed by the third air cylinder to impact the power distribution cabinet, the safety of the power distribution cabinet when the power distribution cabinet is suddenly impacted is detected, meanwhile, the second air cylinder pushes the fixing plate to move, the fixing plate is made to be away from the moving seat, the third air cylinder and the pressure block are made to be vertically downward in combination with rotation of the rotating rod, and the safety of the power distribution cabinet is improved. The top of the power distribution cabinet can be conveniently subjected to impact detection, and whether the power distribution cabinet and internal elements can be kept intact or not is judged.

The invention relates to a collision dummy thoracic structure capable of reflecting thoracic motion characteristics of a human body. Comprising a chest spine module, a costal vertebra joint module, a rib module and a sternum, a neck connecting block is arranged at the upper end of the chest spine module, the costal vertebra joint module is used for connecting a thoracic vertebra of the chest spine module with a rib of the rib module, and the sternum is connected with the rib module; the chest spine module has the freedom degrees of torsion, bending, stretching and lateral bending; ribs and thoracic vertebrae have rotational degrees of freedom through the costal vertebra joint module; the rib module further comprises costal cartilages made of elastic high polymer materials, and the costal cartilages are connected between the ribs and the sternum. According to the method, human anatomy and human kinematics are combined, the influence of thoracic motion response on chest injury in the collision process is fully considered, the biological fidelity of the dummy model is improved, and then the reliability of dummy chest injury parameters in the automobile collision test is guaranteed.

The utility model relates to an omni-directional impact performance test device for a backrest and a headrest of an automobile seat, which belongs to the technical field of automobile seat test devices and comprises a test board, an impact head, a height adjusting mechanism and an angle adjusting mechanism. The impact head exerts impact force on a backrest and a headrest of an automobile seat, the height adjusting mechanism drives the impact head to move up and down in a vertical plane so as to adjust the installation height of the impact head, the angle adjusting mechanism drives the impact head to rotate in the horizontal plane and the vertical plane, and all-directional impact resistance testing is conducted on the backrest and the headrest of the automobile seat. According to the utility model, the technical problems in the prior art that the application range of seat backrests at different inclination angles is limited, the test positions of the seat backrests and headrests are not comprehensive, and rapid and continuous tests cannot be carried out can be solved.

The invention provides a multi-vision fusion mining explosion-proof equipment explosion-proof performance evaluation method, and relates to the technical field of intelligent detection, and the method comprises the steps: 1, obtaining flame images of visible light and infrared light; the method specifically comprises the steps that flame images are captured at the same time through an industrial camera and a thermal imager, the images of the industrial camera are stored as a visible light image sequence, the images of the thermal imager are stored as an infrared image sequence, and a time label is bound with each frame of image; step 2, data processing of visible light and infrared images; step 3, optimizing the single-vision image data; the method specifically comprises the following steps: optimizing the features of a visible light image; a feature optimization step of the infrared image; standardizing the feature representation; step 4, feature level fusion of visible light and infrared vision; comprising a feature matrix construction step and a feature level fusion step. And step 5, quantitative evaluation of the explosion-proof performance is carried out based on the visual features.

The invention relates to the technical field of insertion and extraction force testing, and discloses a detection device and method for automobile exterior trimming part assembling, and the device comprises a bottom frame, a tension testing assembly, a vibration mechanism, and an extrusion mechanism, the vibration mechanism comprises a gear-missing column, a moving plate, a first electric push rod, a placing plate, and a vibration spring, and the bottom frame is provided with a sliding groove. The moving plate is slidably connected into the sliding groove, the first electric push rod is fixedly installed in the sliding groove, the output end of the first electric push rod is fixedly connected with the side wall of one end of the moving plate, one end of the vibration spring is fixedly connected to the bottom frame, the placing plate is fixedly connected to the other end of the vibration spring, and a mounting block is arranged on the bottom frame. According to the device, the vibration mechanism and the extrusion mechanism are matched, so that the bumper support on the placement plate continuously shakes, various road surface vibrations borne by an automobile in the driving process are simulated, and the reliability of the buckle under long-term vibration is accurately evaluated.

The invention relates to the technical field of new energy automobile battery pack detection, in particular to a new energy automobile battery pack collision test device which comprises a transverse moving mechanism arranged on the upper side of a bottom plate, a lifting mechanism arranged on the outer side of the transverse moving mechanism, and a holding mechanism arranged on the lifting mechanism. According to the invention, targeted impact can be applied to a single area of the battery pack or composite impact can be synchronously applied to different areas of the battery pack, and extrusion acting force continuously applied to the battery pack by the pile body under the influence of self weight of a vehicle can be simulated in collision impact; according to the invention, the battery pack can be synchronously driven to transversely move in the process that the battery pack is vertically impacted, so that the composite stress state of the battery pack under the influence of vehicle inertia during actual collision can be simulated; the device can accurately simulate the vertical extrusion force applied to the battery pack by the pile body under the self-weight effect of a vehicle, and drives the battery pack to move transversely to test the influence of transverse extrusion friction on the overall structural stability of the battery pack in a non-impact or weak-impact state.

The embodiment of the invention provides an airplane windshield glass service reliability test method and system and a medium, and the method comprises the steps: carrying out the coupling simulation of a test environment based on a plurality of environmental factors, and building a plurality of environmental factor cooperative control test modes; performing an impact test on the aircraft windshield based on the collaborative test mode to generate damage monitoring data; analyzing the damage monitoring data based on the damage mechanical model, and generating damage acceleration state data; inputting the damage monitoring data and the damage acceleration state data into a life prediction model, and outputting residual life prediction data; analyzing the damage acceleration state data and the residual life prediction data based on the reliability standard information to obtain a reliability test result, and transmitting the reliability test result to the terminal in real time; the mode testing environment is carried out through multiple environmental factors, so that impact testing of different environments is carried out on the aircraft windshield glass, the testing diversity is improved, damage monitoring is carried out on the glass, and the reliability testing precision of the glass is improved.

The invention discloses a sliding bearing-rotor system stability test system and method under a complex alternating load, and relates to the field of rotating machinery test in mechanical engineering. According to the technical key points, a multi-direction and multi-frequency dynamic load is applied through a six-degree-of-freedom platform, and a complex vibration and stress environment in an actual working condition is simulated. In the testing process, a high-precision sensor and a multi-channel acquisition board card are used for monitoring the vibration characteristic and the rotating speed of the system in real time, it is guaranteed that signals of different positions and types can be synchronously acquired, and comprehensive system state information is provided. Then, in combination with time domain and frequency domain analysis technologies, key features are extracted from mass data by applying an advanced Fourier transform algorithm, the resonant frequency, modal characteristics and potential fault modes of the system are identified, and accurate evaluation of the stability of the system is realized. Experimental results show that the real-time monitoring and analyzing method can effectively improve the stability testing precision of the sliding bearing-rotor system under the complex alternating load, and powerful technical support is provided for engineering application. The method is used for evaluating the stability of the sliding bearing-rotor system under the complex alternating load.

The invention relates to automobile part testing, and relates to the technical field of an automobile door limiter durability testing device, and the device comprises an adjusting mechanism which comprises a first motor, a first rotating disc, a first sliding groove, a threaded rod, a first piston rod, a first sliding block, a second rotating disc, a second sliding groove and a sliding rod. Through cooperation of structures such as the second rotating disc and the arc-shaped plate, simulation testing of the vehicle door limiter is facilitated, the first motor is started to enable the second rotating disc to rotate continuously through transmission, the arc-shaped plate drives the cantilever to swing in a reciprocating mode, and the state of the limiter during door opening and closing is simulated; the durability cycle test, the motion precision verification and the instantaneous impact load evaluation of the vehicle door limiter are realized, the test automation degree and the simulation precision are improved, the negative pressure generates variable damping force, simulates air resistance, spring pre-tightening force and door closing impact, the durability of the limiter under real stress is tested, and the test effect of the device is improved.

The invention relates to the technical field of electronic tag performance testing, in particular to an anti-damage testing device for an electronic tag. The invention provides an anti-damage testing device for an electronic tag, which can test the performance of the electronic tag under various conditions and ensure the reliability of the electronic tag in different use environments. An electronic tag damage resistance testing device comprises a front base and a rear base, a material table and the like, and the material table is connected between the upper sides of the bases. When the connecting shaft rotates, the rotating shaft is driven to rotate through belt transmission, so that the bracket drives the wheel blades to rotate, the wheel blades are meshed with the rack, the rack moves upwards, the compression spring is stretched, and after the wheel blades are separated from the rack, the compression spring rebounds to reset the rack, so that the lifting frame drives the impact plate to move up and down; and the effect of impacting the electronic tag so as to test the impact resistance of the electronic tag is achieved.

The invention discloses a method for reducing the loss of an automatic driving vehicle collision test device, and the method comprises the following steps: obtaining preset test vehicle parameters which comprise the maximum deceleration amax of an automatic emergency braking system, the test vehicle speed vtest and the communication system delay time t delay; when an emergency braking system of the test vehicle is triggered, emergency avoidance triggering time t triggering is calculated through a formula t triggering = v test / amax + t delay; after position data of the test vehicle and the background target object are collected in real time, the real-time relative distance D is calculated, and the collision time t collision is calculated through a formula t collision = D / v test; and when t collision is less than or equal to t trigger, driving the background target object to move away from the collision direction through the mechanical execution mechanism. Before collision, the target object is actively driven to be away from the collision direction, and structural damage caused by direct collision can be avoided.

The invention relates to the technical field of battery safety testing, in particular to a new energy lithium battery impact testing device which comprises a testing table and a supporting column, the supporting column is fixedly connected to the lower surface of the testing table, a shell is fixedly connected to the upper surface of the testing table, and speed adjusting mechanisms are arranged on the two opposite outer walls of the shell. Butt joint mechanisms are arranged on the two opposite sides of the upper surface of the test board, a firing pin and a collision block are arranged on the two sides of the top of an inner cavity of the shell, a rotating cover is slidably connected to one end of the upper surface of the test board, and a linkage mechanism is arranged in the test board. According to the new energy lithium battery impact test device, tested batteries can be divided into columnar lithium batteries and cuboid lithium batteries, the columnar lithium batteries and the cuboid lithium batteries can be clamped, if impact test types need to be replaced, the impact test types can be replaced through a linkage mechanism, the automation degree is high, and the test efficiency is high. Technicians do not need to manually replace collision objects, and manpower and time are saved.

This invention belongs to the technical field of photovoltaic panel testing equipment, specifically a photovoltaic panel impact resistance testing device, including multiple testing frames. Each testing frame has an internal flipping mechanism and a displacement mechanism. A top cover is provided on the top of each testing frame, and an operating box is installed between the outer walls of the testing frames. A puck storage box is installed on the outer wall of the top cover, and a limiting component is provided on the inner wall of the testing frame. By changing the rotational speed of the longitudinal gear, the movement trajectory of the puck launcher is altered. The teeth of the second gear mesh with those of the first gear, and their circumferences differ significantly. Therefore, the rotational speeds of the first and second gears are different. When the first gear rotates one revolution, the second gear has already rotated many revolutions. When the puck launcher is controlled to move, the lateral and longitudinal movement speeds differ, and its movement trajectory changes accordingly, thus increasing the randomness of the puck launch position.

The invention relates to the technical field of slope simulation tests, in particular to a high and steep embankment slope soil engineering simulation test device and method.The high and steep embankment slope soil engineering simulation test device comprises a multi-degree-of-freedom vibration table, a slope assembly, an airflow assembly and a driving assembly, the slope assembly is installed on the multi-degree-of-freedom vibration table, and the airflow assembly is installed on the driving assembly; the airflow assembly is located above the side slope assembly, and the driving assembly is connected with the multi-degree-of-freedom vibration table, the side slope assembly and the airflow assembly; the shifting piece is connected with the frame unit and is used for driving the inclination of the frame unit to change; the data acquisition system is used for monitoring the motion characteristics and collapse deformation of the slope model in the simulation process in real time and collecting data information generated in the test process; the problems that a traditional slope test device cannot dynamically simulate gradient gradual change caused by earthquake collapse, and the multi-disaster coupling effect of rockfall impact and hydrological airflow disturbance is difficult to reproduce are solved.

The invention relates to the technical field of explosion-proof performance detection, and discloses an explosion-proof performance evaluation method and system for explosion-proof equipment. The method comprises the steps that a geometric model of the explosion-proof equipment is established, stress distribution of the surface of a shell in the explosion-proof equipment test process is obtained through a finite element analysis method, a finite element reduced-order model and a stress distribution agent model are constructed based on finite element analysis results, and the two models are fused to construct an optimization model. And inputting a data-level fusion result of the multi-source heterogeneous data into the optimization model, and predicting the stress distribution condition of the explosion-proof equipment shell. And inputting the measured data and the calculated data into the multi-modal fusion evaluation model to obtain the safety level of the explosion-proof equipment. And finally, realizing visual display of the explosion-proof equipment performance detection test in the digital twin system by adopting a three-dimensional visual modeling method. According to the invention, the comprehensiveness and reliability of the performance evaluation of the explosion-proof equipment are improved.

The invention relates to a hydroelectric main shaft all-condition simulation test system and method, and the system comprises a fixed rack, one side of the fixed rack is provided with a tripping starting detection device, the fixed rack is provided with a hollow three-axis platform, a three-axis excitation system and a rotation driving part, the moving end of the three-axis platform is connected with a hollow floating rack, and a bearing is disposed in the floating rack. The rotation driving part comprises a power part and a main shaft connected to the torque output end of the power part, the main shaft is in transmission connection with the rotating disc, a hydroelectric large shaft used for a simulation test is installed on the rotating disc, and the three-shaft excitation system is used for applying X-direction, Y-direction and Z-direction high-frequency sine excitation loads to the hydroelectric large shaft of the rotating disc. The device is used for overcoming the defects that an existing testing device mainly focuses on vibration loading of a static mechanical device, simulation and performance testing cannot be carried out on dynamic behaviors under the composite working conditions of rotation, vibration and impact of a hydroelectric large shaft, and safety testing and rating cannot be carried out on a hydroelectric generating set sensor and a tripper overspeed protection device.

The invention belongs to the field of unmanned aerial vehicle safety, and particularly relates to an unmanned aerial vehicle high-speed collision body safety evaluation test device, which comprises a collision protection cabin, a speed measurement device, a sabot separation mechanism, a special-shaped gun barrel, a rapid bomb loading device and a gas storage tank, the special-shaped gun barrel is cylindrical and horizontally arranged, the impact protection cabins are arranged on the outer side of the output end of the special-shaped gun barrel at intervals, and the speed measuring device is arranged between the impact protection cabins and the output end of the special-shaped gun barrel. The high-speed impact test of the unmanned aerial vehicle is realized by adopting the special-shaped gun barrel and the integrated sabot separation mechanism and adopting the 400mm large-diameter gas gun impact test device to accelerate the unmanned aerial vehicle to a specified speed, so that the reliability of a test result is ensured, and the test cost and the test difficulty are also remarkably reduced. Meanwhile, the method has wide applicability, can be used for the unmanned aerial vehicle, and is also suitable for impact damage evaluation of an object of 2 kg or above at the speed of 150 m / s.

The invention provides a collision simulation test method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining collision simulation information, generating a collision simulation signal corresponding to the collision simulation information, and transmitting the collision simulation signal to a to-be-tested controller, the collision simulation signal being used for enabling the to-be-tested controller to execute a preset control function, switching off at least one switching device in a control loop corresponding to the controller to be detected based on the collision simulation information to obtain a loop to be detected, the switching device being a plug-in device connected in series in the control loop, and performing execution detection on a preset control function of the loop to be detected according to the collision simulation signal to obtain a function execution result; through the switching device, the actual execution result of executing the preset control function in the control loop during the collision test can be simulated, the driving safety is improved, and the test cost is reduced.

The invention relates to the technical field of equipment testing, and particularly discloses buffer performance testing equipment which comprises a top plate and a bottom plate, a plurality of supporting rods are arranged between the top plate and the bottom plate, a box body which moves in the length direction of the supporting rods and is provided with an opening in the bottom is arranged among the supporting rods, and a first sliding block is installed on the side wall of the box body; a movable plate is arranged at an opening in the bottom of the box body, and a flexible sealing piece is arranged between the edge of the movable plate and the inner side wall of the box body, so that the interior of the box body is a sealed cavity; at least two telescopic mechanisms are installed between the top face of the movable plate and the top face of the box body, and the telescopic ends of the telescopic mechanisms are rotationally connected with the movable plate. A connecting cylinder communicated with the interior of the box body is mounted at the top of the box body; and a fixed cylinder is mounted at the bottom of the top plate. According to the device, the incompressibility principle of liquid is utilized, linear adjustment of the impact force angle of the buffer is achieved, and linear adjustment of the impact force of the buffer can be conducted very linearly and conveniently.

The invention belongs to the technical field of batteries, and particularly relates to an instrument and method for evaluating expansion of a battery pack, and the method comprises the following steps: 1, placing a gas probe of a miniaturized gas pressure and temperature sensor into an internal gas cavity of the battery pack, and connecting the gas probe to an external gas pressure and temperature recorder; step 2, acquiring pressure and temperature of gas in the battery pack and gaps of the battery cell monomers through a gas pressure and temperature sensor, and acquiring and storing changes of the gas pressure and temperature by adopting a gas pressure and temperature recorder; 3, constructing a multi-environment coupling test system which comprises a charging and discharging module, a temperature control box, a vibration table and an impact testing machine; and 4, establishing a pressure-temperature-deformation coupling model, and separating an environmental interference signal based on wavelet transform. According to the invention, the pressure and temperature changes of the inner cavity of the battery pack in various environments can be accurately collected, and the expansion characteristics of the battery are obtained by using the pressure and temperature changes, so that the state of the battery pack is pre-warned and protected.