126 results about "Cyclic test" patented technology

The invention belongs to the technical field of metal plate processing and testing, and particularly discloses a device and method for testing the bending forming capacity of a metal composite plate. The device comprises a test base, a movable heating mechanism which slides and can be locked on the test base, a bending test mechanism rotationally connected to the test base, a fixed hydraulic mechanism, a first driving motor and a second driving motor, a heating element is arranged in the movable heating mechanism, so that the plates can be uniformly heated on line; the bending test mechanism controls the clamping force and the bending angle of the bearing through a servo motor in a closed-loop manner, and collects pressure and angular displacement data in real time; and the hydraulic telescopic head of the fixed hydraulic mechanism executes reverse pushing after single bending, so that a fatigue cycle test is realized. According to the invention, normal-temperature / thermal-state multi-angle bending and fatigue testing can be carried out on metal composite plates with different specifications, the forming limit and layering failure critical parameters are rapidly obtained, and the process optimization efficiency and the product reliability are improved.

The invention discloses a permanent magnet motor magnet performance degradation evaluation method, belongs to the field of permanent magnet motor tests, and is used for solving the technical problem that reversible demagnetization and irreversible demagnetization are difficult to effectively distinguish in the prior art. The method comprises the following steps: step 1, installing a selected adaptive permanent magnet rotor assembly on a motor installation seat of a test bed; 2, hardware debugging is completed; 3, test parameters are set, and a cooling module is started; 4, starting the to-be-tested permanent magnet motor according to a set rotating speed, gradually applying a load by a loading device according to a test requirement, and monitoring the running state of the motor in real time; step 5, collecting performance data of the permanent magnet motor to be tested according to a preset sampling frequency; step 6, repeating the steps 2-5 to carry out a cyclic test, wherein the cumulative operation time is greater than or equal to 100 hours; sampling is conducted after circulation, and the coercive force change rate delta Hcj and the residual magnetism change rate delta Br of the sample are measured. According to the invention, whether irreversible performance degradation of the magnet occurs can be determined.

The invention provides a plastic pipe service life test method and device, and the method comprises the steps: filling a low-level water tank and a circulation test pipeline communicated with the low-level water tank with a test solution, injecting the test solution into a high-level water tank communicated with the low-level water tank, and enabling the interior of the high-level water tank to have a preset test solution initial volume; wherein the high-level water tank is higher than the low-level water tank by a preset height, and a gas phase space is formed at the top of the high-level water tank; charging compressed gas into the gas-phase space to enable the gas-phase space of the high-level water tank to have preset pressure so as to apply back pressure to the test solution in the low-level water tank; under the back pressure condition, heating the test solution in the low-level water tank to a target test temperature; the backpressure condition and the target test temperature are maintained, and the service life of the plastic pipe sample in the circulation test pipeline is tested. Through the integrated structure and process design, the system is in a stable high-temperature and high-pressure test state, the energy utilization efficiency is improved, the operation cost is reduced, and the test efficiency is improved.

The invention discloses an automatic test method for a co-driver screen of an intelligent cabin, and the main design conception of the method is that the screen ID number of the co-driver screen is added in an ADB instruction, analog simulation test operations such as clicking and sliding of the co-driver screen are realized, whether the response on the interface of the co-driver screen is correct or not is judged in combination with a screenshot recognition mode, and the test accuracy of the co-driver screen is improved. A loop test mechanism is formed by links such as ID acquisition, ID addition and simulation operation screenshot, so that reliable detection is realized for copilot screen functions, especially accidental problems; furthermore, the process related instruction can be packaged into an executable file, so that efficient, convenient and fast automatic testing of the co-driver screen interface is realized. According to the method, the functions of the co-driver screen in the vehicle are tested in a lightweight automatic test mode, the cost investment of test equipment is greatly reduced, the test efficiency of the co-driver screen is improved, and the stability of software is effectively improved.

The utility model relates to the technical field of getter testing, in particular to an automatic cycle testing system for a getter pump. The system comprises a vacuum chamber, a vacuumizing system, a baking temperature control system, an activation power supply, a cooling device and an air supply system, wherein valves, instruments, a heating power supply, a cooling power supply and an activation power supply on a connecting pipeline are connected with a data acquisition system and an automatic control system; besides, the vacuum chamber is divided into a Pm chamber and a Pg chamber by an orifice plate, the Pm chamber is connected with an air supply system, a to-be-detected getter pump is arranged in the Pg chamber, a valve switch in the system is controlled through a data acquisition system and an automatic control system, and circulation of heating activation, low-pressure air chamber pressure adjustment, cooling and air suction test is automatically completed. Meanwhile, the pressure of the Pm chamber and the pressure of the Pg chamber are recorded, and the inspiration rate, the inspiration capacity and corresponding curves are automatically calculated. According to the detection system and method, automatic control of multi-cycle inspiration testing can be realized, and the testing efficiency and the testing accuracy are improved.

This invention discloses a method for testing the anti-coking performance of diesel engine oil in turbochargers. The main design concept of this invention lies in designing a full-process test based on engine operation, including high smoke conditions, low temperature and low load conditions, high temperature and high load conditions, and multiple rounds of cyclic testing to simulate the high and low temperature fluctuations of engine oil. This achieves a comprehensive assessment of the impact of engine oil performance changes on turbocharger coking. Furthermore, engine oil sampling is performed at predetermined stages to monitor relevant physicochemical properties. Further, the turbocharger is disassembled and evaluated after the test procedure, enabling an accurate evaluation of the engine oil's anti-coking performance. This facilitates the matching development of engine oils during engine development and avoids problems such as turbocharger damage and reduced power caused by using unsuitable engine oil. This invention comprehensively covers soot dispersion, high-temperature shear resistance, and temperature oscillation, providing significant guidance for the comprehensive evaluation of engine oil's anti-coking performance.

The utility model discloses a self-adaptive force stabilizing device for characterizing a mechanoluminescence cycle process, and belongs to the technical field of material testing. According to the device, collaborative operation is achieved through a reciprocating testing mechanism and a force loading mechanism which are in linkage design; the reciprocating testing mechanism drives a lead screw transmission assembly through a servo motor to drive a single-axis moving platform, a pressure digital display and a material to achieve reciprocating friction in the y-axis direction; the force loading mechanism pulls a sliding platform to slide on a sliding rail through a spring, a round-bottom quartz tube is arranged at the end of the force loading mechanism and is in point contact with a sample of a pressure digital display accessory, and when the sample is slightly abraded to cause position change, the spring dynamically compensates pressure loss to ensure that force loading in the x-axis direction is constant. An optical fiber is integrated in the round-bottom quartz tube to synchronously collect mechanoluminescence signals. The device solves the problem of force attenuation in the existing cycle test, and is beneficial to systematic research on the cycle characteristics of the mechanoluminescent material.

The invention discloses a Solana chain program transaction sequence dependence defect detection method based on fuzzy testing and symbolic execution, and the method takes an ELF executable file of a Solana chain program as an input, and takes a detected transaction sequence dependence defect report as an output; in order to detect the transaction sequence dependency defect in the program on the Solana chain, the method is based on the thought of fuzzy testing and symbolic execution, the program on the input Solana chain is tested and analyzed, an initial block chain simulation state and a seed transaction are generated from an executable file of the program, and then loop testing is carried out. And when the test is finished, outputting detailed reports of all defects found in the process. The method provided by the invention has the advantages of effectiveness and high efficiency, and can more effectively discover the transaction sequence dependency defect in the Solana chain program.

Disclosed are a method and system for verifying a low-frequency oscillation damping control effect of a governor power system stabilizer (GPSS), relating to the technical field of power systems. The method includes: selecting a wiring working condition for a fault-free disconnection test, and constructing a unit test working condition; performing the fault-free disconnection test on an outgoing line of a power plant, and collecting an electromagnetic power fluctuation recording curve; and comparing low-frequency oscillation damping effects under different GPSS settings, evaluating the effects, and performing a cyclic test. A success rate of the test is increased, safety of the test is improved, and the overall stability and anti-oscillation capacity of the system are improved in the disclosure.

The utility model discloses an AC power cycle test circuit and device, and relates to the technical field of electronics. The circuit comprises an IGBT and a to-be-tested device, one end of the to-be-tested device is electrically connected with an emitter of the IGBT, and a collector of the IGBT and the other end of the to-be-tested device are electrically connected with two ends of a voltage source respectively; wherein the to-be-tested device comprises three to-be-tested units which are connected in parallel, and each to-be-tested unit comprises two switch tubes which are connected in series; the collector and the emitter of the switch tube of the upper bridge arm of one to-be-measured unit are connected with the two ends of the measuring current source; the series connection end of the switch tube of the upper bridge arm and the switch tube of the lower bridge arm of each to-be-tested unit is electrically connected with a load, and the other end of the load is grounded. The aging of the device can be monitored on line, so that the test result for evaluating the to-be-tested device is more accurate.

The invention discloses an aging seat for an aging cycle test, which comprises an upper gland and a base, a placement groove is formed in the upper gland, the base is positioned at the bottom of the upper gland, buffer rods are mounted at four corners of the base, the tops of the buffer rods are connected into the upper gland, a clamping pin group is arranged on the base, and a clamping pin is arranged on the clamping pin group. The top of the clamping needle set abuts against the interior of the upper gland, and side limiting clamps are arranged on the two sides of the upper gland. Through cooperative use of the upper gland, the base and the clamping needle group, a transmission part corresponding to a to-be-tested electronic device is put in, the to-be-tested electronic device can be conveniently and quickly mounted and taken out, through cooperative use of the base, a bottom connecting rod and an inserting rod, and through cooperative use of a side guide clamp, an upper guide clamping rod, a trapezoidal seat and a lower guide clamping rod, the to-be-tested electronic device can be conveniently and quickly mounted and taken out. And the unique accuracy of the upper gland on the base is facilitated, and the problem of low test efficiency of the existing aging test equipment caused by inconvenient installation of the to-be-tested device on the aging seat is solved.

The invention discloses a multi-working-condition low-loss acceleration power cycle testing device and a control method, and belongs to the technical field of power equipment testing. According to the invention, the inductance data of the inductance module, the power device voltage data output by the to-be-tested power device module and the load voltage data output by the load converter module are interacted, and different power device working conditions are combined; on-off control signals of the to-be-tested power device module and on-off control signals of the load converter module can be dynamically generated, so that acceleration power cycle testing under multiple working conditions is realized; through the connection of the load converter module, the to-be-tested power device module and the interactive inductor module, the energy in the acceleration power cycle test process is cyclically exchanged between the load converter module and the to-be-tested power device module, so that the energy loss of the acceleration power cycle test is reduced.

The present invention relates to a test device for testing the performance of a battery and, more specifically, to a cycling test device for testing the performance of a battery by repeatedly charging and discharging the battery within a predetermined temperature for a long time. An embodiment of the present invention may provide a cycling test device comprising: a main line along which a compressor, a condenser, and an evaporator are sequentially connected to circulate a refrigerant; a heater for heating air cooled through the evaporator; a hot gas mixing line bypassed from the main line between the compressor and the condenser and connected to the main line between the condenser and the evaporator, in order to increase the temperature of the evaporator and limit the output of the heater, such that the hot gas discharged from the compressor is mixed with the low-temperature and low-pressure gas supplied from the condenser to the evaporator; and a controller for controlling the amount of hot gas supplied to the evaporator through the hot gas mixing line.

The invention discloses an in-situ thermogravimetric and corrosion thermal cycle testing device, which relates to the technical field of thermal cycle testing devices, and comprises a base, a reaction tube, a placement table and a heating movable furnace, the reaction tube is horizontally arranged, and the axial direction of the reaction tube is parallel to the length extension direction of the base; the object placing table is positioned in the reaction tube and is used for fixing a sample to be tested. The heating movable furnace is arranged on the base in a sliding mode in the axial direction of the reaction tube, the heating movable furnace can enclose or be separated from the reaction tube when sliding in a reciprocating mode, the heating movable furnace is provided with a heating wire, and when the heating movable furnace enclose the reaction tube, the heating wire can heat a sample in the reaction tube. According to the invention, the reaction tube is horizontally arranged, and the heating movable furnace slides along the axial direction of the reaction tube to enclose or separate from the reaction tube, so that a test mode that a sample is static and a temperature field is movable is realized; the position of the sample is always fixed, the switching between the high-temperature heating area and the cooling area is completed only by sliding and heating the movable furnace, and the sample testing precision is high.

The present application relates to the technical field of plate performance testing, and particularly relates to a kind of plate edge durability test method;It comprises the following steps: cutting plate sample into standard size test piece;Using thermal mechanical analyzer respectively test the linear expansion coefficient of test piece edge material and base material;The test piece after processing is placed in environmental test chamber and is subjected to cyclic test;Test piece is fixed on load testing device, and constant load is applied along the direction perpendicular to the edge interface of plate plane;Using flatness tester to measure the overall warping of test piece, compare with the warping data before testing, calculate the warping change, evaluate the actual effect of plate balanced laminating process on preventing warping after edge sealing;Using weighted scoring method to calculate the comprehensive score of edge durability;Realize that the long-term durability of plate edge sealing under complex working conditions can be comprehensively and accurately evaluated, and provide scientific and comprehensive technical support for edge sealing process optimization, material selection and structure design.

A system and method are disclosed to test signal paths within sensor signal channels by providing an additional signal channel having testing means. The additional signal channel has a test signal generator, a test signal evaluator, and a signal path that is provided in parallel to existing signal paths within the sensor. Signal paths between each sensing element and each output are manipulated by input and output path couplers so that sense signals always reach the correct outputs but the intermediary signal path(s) may be changed according to a self-test protocol. In particular, the signal path(s) may be selected for cyclical testing. The signal path under test is subjected to test signals from the test signal generator which are then evaluated by the test signal evaluator for correctness, and faults signaled. The test signals may be selected to test each signal processing function in the signal path.

A cryogenic testing system, method, equipment, and medium for aircraft fuel servo valves are disclosed, relating to the field of testing systems. The aircraft fuel servo valve cryogenic testing system maintains the medium at a preset ambient temperature by setting up an ambient temperature fuel tank. In conjunction with a high-pressure pump group and a cryogenic heat exchanger arranged sequentially along the fuel supply pipeline, only the medium flowing to the test station is pressurized and deeply cooled online. This eliminates the need to cool all the medium in the ambient temperature fuel tank, significantly reducing cooling energy consumption and cooling time. Simultaneously, a temperature return control loop on the return pipeline can raise the temperature of the cryogenic, high-pressure medium flowing out after the test to ambient temperature before returning it to the ambient temperature fuel tank, preventing the backflow of the cryogenic medium from disturbing the temperature field within the tank. This effectively solves the problems of large temperature fluctuations, low testing accuracy, and poor continuous operation efficiency in traditional overall cryogenic cyclic testing. It can stably maintain the extreme low-temperature conditions required for testing for extended periods, improving the accuracy and continuous operational stability of aircraft fuel servo valve cryogenic testing.

The invention provides a dual-temperature-zone test box for predicting battery cycle life failure, which comprises a test box assembly, an explosion door assembly, a test inner box assembly, a dual-temperature-zone door assembly, an electrical assembly and an operation control panel assembly.The dual-temperature-zone test box has the beneficial effects that the equipment is simple to operate, is provided with a touch display screen and an automatic control system, is convenient to use, and is suitable for popularization and application. High temperature and low temperature can be quickly switched, so that the test period is greatly shortened, and the working efficiency is improved; through the high-precision temperature sensor and the controller, the environmental test box can ensure the accuracy of temperature control; the equipment can also store multiple groups of test programs, so that a user can conveniently perform repeated tests, and the test efficiency is improved; long-time loop testing is not needed, so that the time cost is saved; according to the method, a specific battery cycle failure problem point can be locked, and compared with the prediction of the cycle life, the battery design can be optimized aiming at the specific problem point, so that the research and development period is greatly shortened.

This invention discloses a method for rapidly predicting the cycle life of lithium batteries. First, cycle data of lithium batteries with the same system as the lithium battery to be predicted are obtained under the same temperature T. Then, the A and Z values ​​of the lithium battery at different cycle numbers are calculated. The fitting relationships between A and Z and x are obtained. Cyclic tests are performed on the lithium battery to be predicted. The A1 and Z1 values ​​of the lithium battery to be predicted are calculated after m cycles, where m is a positive integer from 50 to 100. Finally, the A1 and m values ​​are substituted into A=ax. 2 In +bx+g; substitute the Z1 and m values ​​into Z=dx 2 +ex+h; Calculate the values ​​of g and h; Step 3: Assume x is n, and n is a positive integer; Substitute n into A=ax 2 In the equation +bx+g, we obtain A2; substituting n into Z=dx 2 In +ex+h, Z2 is obtained; the predicted cycle life relationship of the lithium battery to be predicted is obtained: ln(Qloss) = A2 + Z2ln(x). This method only requires 50-100 cycles of data to quickly and accurately predict the performance change trend of lithium batteries at higher cycle numbers, and is not affected by environmental changes, showing strong adaptability.

The utility model discloses a fire hose water pressure bursting test device, which comprises a box body, a pressurization system, a test mechanism, a recovery mechanism and a control cabinet, the box body is provided with a platform, a funnel and a platform I, and the test mechanism is provided with an adjustable mechanism; the adjustable mechanism comprises two guide rails and two sliding seats, and the testing mechanism comprises two testing assemblies. According to the utility model, the pressurization system composed of the circulating motor and the booster pump is used for pressurization supply of water pressure, and the two test assemblies are combined to realize synchronous and rapid pressurization water injection, so that the pressurization effect and efficiency are improved, the pressure maintaining effect is ensured, and the test effect is improved; the funnel is used for guiding flow, and the recycling mechanism is used for testing collection of water after burst, so that waste of water resources is reduced, the recycled water is recycled for testing, and the testing cost is reduced.

The utility model relates to the technical field of oil pipe hanger testing, in particular to a casing hanger PR2 testing tool which comprises a testing derrick, the testing derrick is in a well shape and used for installing an oil pipe hanger, and when the oil pipe hanger is installed on the testing derrick, a plug is located in an upper pipeline of the oil pipe hanger. The oil pipe assembly is located in a lower pipeline of the oil pipe hanger. The oil pipe hanger and the oil pipe assembly form a sealed pipeline space through the plug; the oil pipe assembly is fixedly connected with the displacement end of the displacement assembly. The stress direction of the oil pipe assembly generated through displacement of the displacement assembly is in the pipeline length direction of the oil pipe hanger. A pressure test opening is formed in the plug, the pressure test opening is used for communicating an external liquid pump with a pipeline space of the tubing hanger, and the external liquid pump introduces liquid into the pipeline space through the pressure test opening. According to the utility model, the technical problems of hanger load cycle test, hanger internal pressure test and hanger temperature and pressure cycle test of the casing hanger according to the PR2 test standard are solved.

The present invention relates to a test apparatus for testing the performance of a battery, and more particularly, to a cyclic test apparatus for testing the performance of the battery by repeatedly charging and discharging the battery for a long period of time within a predetermined temperature. One embodiment of the present invention may provide a loop test apparatus including: a first refrigerator having a cooling capacity for maintaining a temperature in a chamber at a predetermined temperature in consideration of a thermal load in the chamber; a second refrigerator provided separately from the first refrigerator, and having a cooling capacity greater than that of the first refrigerator to reduce a temperature in the chamber; and a control unit that controls the second refrigerator to be selectively driven in a cooling operation for reducing a temperature in the chamber.

The invention relates to a collaborative determination method and system for the initial pre-tightening force and the foam thickness of a battery cell. The collaborative determination method comprises the steps that the expansion thickness of the battery cell under the pressure-free condition and in the full-charge state is obtained; a foam material is screened, the foam material meets a first condition, and the first condition comprises that under the compression strain value corresponding to the expansion thickness, the first physical performance of the foam material meets a first preset standard; performing cell gradient test on the plurality of groups of cells by using a foam material to obtain a pre-tightening force range enabling the cycle performance of the cells to reach a preset cycle performance; within the pre-tightening force range, a foam material is used for carrying out battery cell cycle test on the battery cell to obtain the thickness variation of the battery cell; and according to the stress-strain curve of the foam material and the thickness variation of the battery cell, determining the thickness range of the foam material with the first physical property meeting a second preset standard. According to the method, the cell pre-tightening force and the foam thickness are cooperatively determined, the foam performance is matched with the cell expansion characteristic, and the limitation of paying attention to a single parameter is avoided.

The invention discloses a horizontal well oil pipe corrosion resistance testing device which comprises a testing main body and a weighing mechanism fixedly connected with the upper surface of the testing main body, a stretching mechanism is arranged at the position, close to the upper portion, in the testing main body, a mounting groove is formed in the position, below the stretching mechanism, of the rear side of the testing main body, and a circulating mechanism is arranged in the mounting groove. A motor is arranged on one side of the circulating mechanism, a PLC control module is fixedly installed on the surface of one side of the testing body, the circulating mechanism comprises a circulating bin and a driving wheel arranged in one side of the interior of the circulating bin, the driving wheel is connected with two symmetrically-distributed rotating discs in a meshed mode, and first meshing teeth are fixedly arranged on the opposite inner sides of the two rotating discs; a rotating cylinder is arranged between the two rotating discs, and second meshing teeth are arranged at the two ends of the rotating cylinder. According to the invention, by arranging the circulating mechanism, a circulating corrosion resistance test can be carried out, so that the effects of high test efficiency, circulating test, synchronous test and accurate test are achieved.

This invention relates to the field of building material testing technology, specifically a method for testing the mechanical properties of corn stalk laminated timber. The method includes: planning a grid of testing points on the laminated timber; measuring the elastic modulus and local compressive strength of each testing point in both the longitudinal and transverse directions to form a measurement distribution matrix; based on the differences in values ​​of the measurement distribution matrix in each direction, performing multi-directional feature calibration on the laminated timber to delineate preliminarily identified performance defect areas; based on the performance defect areas under multi-cycle fatigue loading, using the residual elastic modulus under multi-directional cyclic testing, performing residual performance calibration to establish performance distribution weights for each testing point; based on the performance distribution weights configured for the testing points, performing spatial autocorrelation analysis to determine the spatial correlation data of performance defects; and interpreting the spatial correlation data in relation to the distribution of testing points to generate mechanical testing results. This method improves the accuracy and efficiency of laminated timber testing.

The invention relates to the technical field of cosmetic automatic production equipment, and discloses a cosmetic paste production line and a control system, the production line comprises a vacuum emulsification tank, a metering pump and a laminar flow impedance test tube, the test tube is provided with a pressure and temperature sensor, the tail end of the test tube is connected with a pneumatic three-way reversing valve, and the test tube is respectively communicated with a return pipe and a filling buffer tank. A rheology operation unit and a bimodal execution unit are arranged in the control system, and the rheology operation unit calculates the consistency coefficient and the flow behavior index of the paste in real time by utilizing a mapping model according to the rotating speed of the metering pump and the pressure difference of the test pipe. And when the indexes meet the qualified threshold value, the dual-mode execution unit is triggered to be switched from the cycle test state to the filling and discharging state. According to the method, the dynamic shear rate field is constructed on line, so that the hysteresis of off-line detection is eliminated, the self-adaptive closed-loop control based on the rheological property of the material is realized, and the quality consistency and the production safety of a high-viscosity non-Newtonian fluid product are ensured.

The invention discloses an optical fiber compression resistance testing method and a testing device thereof. The optical fiber compression resistance testing method comprises the following steps: providing an optical fiber sample; initial state parameters of the optical fiber sample are obtained in a preset test environment, the initial state parameters comprise a signal initial attenuation value of the optical fiber sample and an initial damage state of a coating layer of the optical fiber sample, and the initial damage state comprises an initial damage degree and an initial damage type; performing a cyclic test on the compression resistance of the optical fiber sample in a preset test environment, and evaluating the compression resistance of the optical fiber sample; and evaluating the elastic deformation range, the permanent deformation rate and the recovery rate of the tested optical fiber sample in the preset test environment. By adopting the technical scheme, multiple tests of the compression resistance of the optical fiber in the preset environment are realized, the test accuracy of the compression resistance of the optical fiber is improved, the comprehensive evaluation of the compression resistance of the optical fiber is realized, and the problem that the mechanical performance and the transmission performance and the compression resistance of the optical fiber cannot be synchronously tested is solved.

This application relates to an aging test system for a drone power sleeve, comprising: a drone fuselage with a mounting position for installing the power sleeve; a damping rod including a cylinder and a piston rod; the piston rod being connected to the drone fuselage; a universal ball joint assembly including a universal ball joint rod and a universal ball socket, the universal ball joint rod and the universal ball socket being movably connected to form a spherical pair; the universal ball joint rod being connected to the cylinder; a round steel plate connected to the universal ball socket; a spring shock absorber connected to the round steel plate; and a fixed base connected to the spring shock absorber. This invention can reproduce outdoor flight conditions as closely as possible, improving the accuracy of aging test results. It can also achieve uninterrupted cyclic testing indoors, improving testing efficiency, reducing labor and time costs, and avoiding various risks associated with outdoor flight operations, such as drone crashes, airspace violations, and weather conditions.

The invention discloses a variable temperature zone temperature impact test box which comprises a rotating device and a plurality of box bodies placed on the rotating device, the box bodies are evenly arranged along a rotating disc of the rotating device, each box body is provided with an air opening, a high-temperature generator and a low-temperature generator are arranged on the two sides of the rotating device, and the box bodies rotate along with the rotating device. The high-temperature generator and the low-temperature generator are selectively and detachably connected with the air openings of the box body through the air pipes, so that a high-temperature-normal-temperature-low-temperature three-temperature area and / or a high-temperature-low-temperature two-temperature area can be constructed, and switching between the three-temperature area and the two-temperature area is achieved. Three-temperature-zone and two-temperature-zone cyclic tests are realized on the same temperature impact test box, and the high-temperature generator and the low-temperature generator can be selectively combined and detachably connected with the box body through the air pipes according to requirements, so that the test requirements of a complex temperature change scene of a test article are met; during testing, synchronous operation of a high-temperature area and a low-temperature area is achieved in second-temperature-area testing and third-temperature-area testing, and the load and energy consumption of equipment are greatly reduced.

The application relates to the micro-electro-mechanical field and discloses a method and device for directly eliminating the damping unevenness of a hemispherical resonator by femtosecond laser, wherein the damping unevenness value and azimuth information of the hemispherical resonator are acquired through a test circuit; the corresponding position to be processed is moved to the focal point of the femtosecond laser according to the azimuth information; the position is processed by rotating etching with the femtosecond laser, so that a periodic micro-nano structure based on the surface plasmon polariton theory is formed on the surface of the resonator; the structure can directly change the local damping distribution and energy dissipation, and the damping unevenness can be eliminated to the required range through cyclic testing and processing. As a direct elimination method, the application has the advantages of non-contact, high precision, high efficiency, strong correlation and the like, the processing process is non-thermal and almost does not generate residual stress, and the key technical bottleneck of the hemispherical resonator manufacturing is effectively solved, thereby laying a foundation for the future batch production of the high-precision hemispherical resonator.