3980 results about "Test bench" patented technology

The invention relates to an AI server cooling water pump vibration quantity self-adaptive calibration test method and system, an intelligent test platform integrates a six-dimensional force sensor and a temperature compensation vibration exciter, the platform rigidity is automatically calibrated, a water pump-pipeline system transfer function is obtained, and a rotating speed-lift-modal frequency three-dimensional mathematical model is established; a three-axis MEMS accelerometer array is arranged at sensitive parts such as a water pump bearing seat and a motor shell, and vibration, current and pressure signals are synchronously collected; carrying out time-frequency domain signal processing by adopting variational mode decomposition in combination with self-adaptive S transformation, and extracting a 128-dimensional full-frequency domain feature vector containing a modulation side frequency band; effective values of vibration acceleration, speed and displacement are calculated through a frequency domain integration algorithm, and current harmonic interference is corrected through an electromagnetic vibration compensation model; and finally, a vibration health degree evaluation model containing 18 characteristic parameters is established based on a support vector machine, the test system comprises an intelligent test platform unit, a multi-source sensing unit, an edge calculation unit and a data management unit, and microsecond-level synchronous acquisition and GB-level data throughput are realized through a time sensitive network. And online incremental learning and automatic generation of a test report are supported. The method has the effect of improving the water pump vibration quantity test precision.

The invention relates to the technical field of test bed operation monitoring, in particular to a fuel pump test bed operation monitoring method and system. The method comprises the following steps: acquiring monitoring time sequence data of operation of a fuel pump test bed, performing feature extraction, constructing a coupling prediction model of a space-time diagram attention network-unscented Kalman filter, and predicting a process noise covariance matrix and a measurement noise covariance matrix according to the coupling prediction model, and performing state estimation by using an unscented Kalman filter to obtain vector posterior probability distribution, constructing a fault evolution trajectory manifold, calculating a mahalanobis distance between the vector posterior probability distribution and the fault evolution trajectory manifold, and taking the mahalanobis distance as a monitoring index. According to the scheme of the invention, the deep features which can better reflect the inherent nonlinear and complex dynamic characteristics of the system can be extracted from the multi-source data, the estimation accuracy of the filter on the potential health state of the system is improved, and the defects that model parameters are fixed and gradual change faults are difficult to capture in a traditional method are overcome.

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 invention specifically discloses a method for evaluating the health state of a cigarette comprehensive test board, and the method comprises the steps: obtaining the fault type of the cigarette comprehensive test board, and carrying out the analysis of the fault type, so as to obtain the self degradation of equipment and the influence factors of the fault; carrying out fault influence factor analysis on influence factors of equipment degradation and faults, and carrying out numeralization on the influence factors; carrying out fault data acquisition and processing on the cigarette comprehensive test bench, structuring data of equipment faults, and further carrying out fault data expansion through a generative model GAN network; and a DNN deep neural network is constructed, training is performed by using the expanded fault data, and then fault probability evaluation is performed on the cigarette comprehensive test bench through the DNN deep neural network. According to the invention, the convenience and accuracy of health assessment of the cigarette comprehensive test board can be improved.

The invention discloses an aircraft landing gear shimmy test bed and a test method, the aircraft landing gear shimmy test bed comprises a main body rack, a hanging basket system, a large flywheel, a flywheel driving system, an excitation device and a follow-up displacement measurement system.The aircraft landing gear shimmy test bed can simulate the shimmy of an aircraft after undercarriages of different design configurations are subjected to interference excitation force or interference torque in the process of takeoff, taxiing, landing and the like of the aircraft; the control effect of the shimmy damping system on the stability of the undercarriage has short excitation time so as to simulate real working conditions, the shimmy stability performance of the undercarriage can be accurately detected, excitation is continuously carried out under the condition that the test state is continuously changed, and the working efficiency is greatly improved. The follow-up displacement measuring system designed by the invention can enable the exciting force and the center of the axle to be always kept on the same horizontal plane, can apply torque control and torque excitation control, is suitable for undercarriage shimmy tests with different axle heights, different tire diameters and different excitation modes, and has certain universality.

The invention discloses a combined sealing device frictional wear and external leakage test bed and a test method thereof, and aims to solve the problem that the existing device cannot accurately know the sealing wear. The test bench comprises a rack, a test piece, a stay wire sensor, an oil pipe and a hydraulic system, wherein an oil tank is arranged in the rack. The test piece comprises a test sealing assembly and a plunger, and the stay wire sensor is connected with a sealing combination structure. During testing, the hydraulic system drives the plunger and the sealing assembly to move relatively, the pull wire sensor measures displacement, friction force is calculated by combining pressure data to reflect abrasion, and the oil groove collects leaked oil. According to the invention, comprehensive testing of friction, wear and leakage is realized, sealing performance and wear rules under multiple working conditions can be analyzed, the structure is convenient to observe and operate, and optimization of the sealing structure is facilitated.

The invention relates to the technical field of hydrogen storage system testing, and discloses a one-way valve combined hydrogen storage system durability test bench and a test method. A main control computer of the rack is used for configuring test task parameters, coordinating operation of subsystems and processing test data; the high-pressure hydrogen supply subsystem comprises a pressure-adjustable hydrogen source and a pressure closed-loop control module, and can apply accurate and controllable hydrogen pressure to the inlet end of the tested system according to test task parameters; the multi-channel valve state acquisition subsystem acquires the inlet and outlet pressure of the valve, the surface temperature of the valve body and vibration spectrum data in real time through pressure, temperature and vibration sensor arrays arranged at the valves, and transmits the data to the main control computer; the valve action driving subsystem comprises a high-speed electromagnetic actuator array and a displacement feedback module and can drive all valves to execute a preset opening degree sequence and opening and closing frequency. And the durability evaluation subsystem is embedded into the main control computer, calculates the accumulated damage degree of the valve and predicts the residual life cycle.

The invention relates to the technical field of electric field measurement, in particular to a non-contact electric field sensor design method and system, and the method comprises the steps: carrying out the electromagnetic analysis and shielding structure topological optimization based on the environment characteristics of a transformer substation, and generating mechanical design parameters; shielding structure parameters are formed through material selection and electrode optimization, a three-dimensional electromagnetic field simulation model is established, and multi-scene interference simulation and sensitivity verification are carried out; and configuring a temperature compensation circuit and optimizing circuit parameters, performing dynamic response analysis and material matching degree evaluation through a high-frequency material test platform, and finally generating sensor specification parameters. According to the method, the anti-interference performance, the measurement precision and the stability of the sensor are remarkably improved, and the method is suitable for high-precision electric field measurement in a complex electromagnetic environment.

The utility model belongs to the technical field of marine shafting transmission device couplings, and particularly relates to a marine coupler static balance test bench, which comprises a hydraulic bearing and a static balance tool, and is characterized in that the hydraulic bearing is composed of a bearing seat and a bearing bush in the bearing seat; the two ends of the static balance tool are of columnar structures and are in clearance fit with bearing bushes of the hydraulic bearings respectively, stable rotation is achieved through supporting of the hydraulic bearings, the static balance tool is of a sectional structure and comprises a first supporting shaft, a second supporting shaft and a plurality of stepped shafts, the first supporting shaft and the second supporting shaft are connected with the hydraulic bearings on the two sides, and the stepped shafts are located between the first supporting shaft and the second supporting shaft. The coupler is arranged on the static balance tool in a sleeving mode, located between the two hydraulic bearings and coaxially rotates with the static balance tool. The problems that an existing test bench is insufficient in test precision, poor in structural adaptability and low in stability are solved, and the detection precision of static balance test, the capability of adapting to diversified structures, the vibration resistance and the stability are improved.

The invention provides a vibration test bench, and relates to a vibration test device, and the vibration test bench comprises a pedestal, and a plurality of vibration frames which are arranged on the pedestal in parallel at intervals and are sequentially arranged on the pedestal from top to bottom; each sliding guide rail is arranged between every two adjacent vibration frames and between the vibration frame on the lowermost layer and the base, and the guide directions of the sliding guide rails are different from one another; each driving mechanism is fixedly connected to the vibration frame located on the lower layer or the base and drives the vibration frame located on the upper layer to do reciprocating rectilinear motion along the corresponding sliding guide rail. Each locking mechanism is arranged between every two adjacent vibrating frames and between the vibrating frames and the base, and each locking mechanism can selectively lock the reciprocating motion of the vibrating frame located on the upper layer; the control unit is in communication connection with all the driving mechanisms and independently controls operation of all the driving mechanisms. The vibration test bench can realize multi-degree-of-freedom movement, and has a broadband vibration frequency / amplitude adjusting function.

The present invention relates to the technical field of testing equipment, and specifically discloses a prestressed steel strand performance testing device, comprising a machine body and an adjustable test bench mounted on the top of the machine body via an inclination adjustment unit. The top of the adjustable test bench is also provided with a continuous impact unit, a guide unit, and two left-right symmetrical multi-stage clamping units, wherein the multi-stage clamping units include a primary bending clamping assembly, a bending control assembly, and a secondary circumferential clamping assembly. The present invention can perform tensile strength testing and fatigue strength performance testing on the steel strand in a horizontal state, and can also perform tensile strength testing and fatigue strength performance testing on the steel strand in an inclined state; the present invention performs multi-stage clamping and fixing of the steel strand by cooperating with the primary bending clamping assembly and the secondary circumferential clamping assembly, thereby achieving multi-point and multi-directional clamping, ensuring that the steel strand is subjected to uniform clamping force in multiple directions, and preventing the steel strand from sliding during the tensile strength test.

The invention discloses a downhole casing pipe external windowing experiment device and method, and belongs to the technical field of downhole casing pipe windowing, the downhole casing pipe external windowing experiment device comprises an experiment bench, an angle control mechanism, a drilling mechanism and a drill column mechanism, the angle control mechanism is arranged on the experiment bench and used for adjusting the position of a casing pipe, and the drilling mechanism is arranged on the experiment bench and used for controlling the drilling mechanism; a first driving assembly of the drilling mechanism is used for driving a working plate to move in the direction close to the outer wall of the casing pipe, and a first pressure sensor is used for detecting thrust of the first driving assembly. A first servo motor of the drill string mechanism can drive a drill rod to drive a milling shoe to rotate so as to open a window from the outer wall of the casing pipe, a torque sensor is arranged between an output shaft of the first servo motor and the drill rod and used for detecting the cutting torque of the milling shoe, and a second pressure sensor is arranged on a working plate and used for detecting the cutting pressure of the milling shoe on the casing pipe. The underground casing pipe external windowing experiment method adopts the underground casing pipe external windowing experiment device. According to the method, data support is provided for an actual casing pipe external windowing process, and the windowing quality is improved.

The invention relates to the technical field of friction coefficient measuring devices, and discloses a device for testing the friction coefficient of an anti-skid coating of a cultivation work ship deck. Comprising a testing platform, a friction coefficient testing mechanism arranged below the testing platform, a driving mechanism arranged on the testing platform and used for driving the friction coefficient testing mechanism to horizontally move, and a partition assembly and a water spraying assembly arranged in the middle of the lower surface of the testing platform; through the arrangement of the high-pressure nozzles, in the moving process of the testing platform, high-pressure gas can automatically clean a deck testing area through the high-pressure nozzles, dust attached to the surface of a deck is effectively removed, manual pre-cleaning is not needed, the testing efficiency is remarkably improved, meanwhile, seawater is sprayed to the designated testing area through the water spraying assembly, and the testing efficiency is improved. The environment of the residual seawater on the deck in the actual operation of the cultivation work ship is accurately simulated, and the technical problems that an existing portable sliding friction instrument needs to be manually cleaned and cannot simulate the residual seawater environment are solved.

The invention discloses a multi-station parallel test automation device for a high-voltage mutual inductor, and relates to the technical field of mutual inductor testing, the multi-station parallel test automation device comprises a test base, a high-voltage test board and an annular station, the upper end of the test base is provided with a test frame, the upper end of the test frame is provided with a first electric push rod, and the rear end of the test frame is provided with a tester; a moving plate is arranged at the upper end of the high-voltage testing table and arranged at the lower side output end of the first electric push rod, a testing groove is formed in the lower end of the high-voltage testing table, a plurality of high-voltage conductive contact fingers distributed in an annular array are arranged in the testing groove in a sliding mode, and a plurality of electromagnetic adjusting assemblies corresponding to the high-voltage conductive contact fingers are arranged on the side wall of the testing groove. The electromagnetic adjusting assembly is used for driving the high-voltage conductive contact finger to slide, and a plurality of uniformly distributed guide rods are arranged between the moving plate and the test base; the annular station is rotationally arranged on the upper side of the test base, the annular station is located on the lower side of the high-pressure test board, and at least two sets of clamp assemblies are arranged on the annular station.

The invention belongs to the technical field of asphalt mixed material experiments, and particularly relates to test equipment for measuring the high-temperature stability performance of an asphalt mixed material, the test equipment comprises a test platform, an environment control module and a data acquisition module, the test platform comprises a test bracket, samples to be tested are uniformly arranged on an inclined adjusting plate on the test bracket, and the environment control module is connected with the data acquisition module; the data acquisition module comprises a laser displacement sensor, and the laser displacement sensor is arranged at the position, corresponding to the to-be-tested sample, of the adjusting plate; according to the invention, the laser displacement sensor located in the protection box is started at regular time, and the relative displacement change between the laser displacement sensor and the to-be-tested sample is calculated according to the change of the reflected laser, so that the actual deformation displacement of the to-be-tested sample is accurately measured and recorded and is transmitted to external computer equipment; and real-time and accurate data acquisition of the deformation degree of the to-be-tested sample is realized.

The invention discloses a land-based virtual-real symbiosis experiment system for traveling cable swing, which comprises a land-based cable experiment table carrying a driving and loading module, and a mapping module for collecting real parameters of a traveling cable based on the driving and loading module to establish a mechanical model, the driving and loading module comprises driving equipment arranged on the land-based cable experiment table, the mapping module defines boundary conditions of the mapping module in a fixing mode of the land-based cable experiment table, and the boundary conditions serve as constraints of a dynamic model in the mapping module. By establishing real-time data transmission between the physical experiment table and the digital twin model, the problem of mapping lag is solved on the basis of real parameters collected by the driving and loading module, a simulation result can be fed back to the physical experiment table, parameter adjustment is guided, a digital research platform is provided for trailing cable reliability research in a land-based environment, and the reliability of a trailing cable is improved. And an effective guarantee is provided for ensuring absolute safety of cable running.

The utility model discloses an exoskeleton robot testing frame, which belongs to the technical field of exoskeleton robot testing, aims at solving the problems of poor stability and inconvenience in height adjustment of exoskeleton robot testing, and comprises a bottom frame and a support frame, the support frame is fixed on the side wall of the top end of the bottom frame, and a plurality of mounting plates are fixed on the side wall of the bottom end of the bottom frame. Universal wheels are fixed on the side wall of the bottom end of the mounting plate; the top frame is fixed to the side wall of one side of the supporting frame, a lifting frame is arranged under the top frame, and a lifting assembly is arranged on one side of the supporting frame; through the arrangement of the lifting assembly, the height position of the exoskeleton can be adjusted according to field application requirements, so that a worker can conveniently mount and dismount the exoskeleton, the working efficiency of the work at the earlier stage of exoskeleton testing is greatly improved, the motion flexibility of the exoskeleton and the use performance of the testing frame are improved, and the testing frame is suitable for popularization and application. And the device is suitable for exoskeletons with different heights, and the adaptability is high.

The invention discloses a hydraulic system sealing test bench and a sealing performance test method, and belongs to the technical field of sealing performance detection, the test bench comprises a vibration device, a pressure control system, a sealing element installation device, a flow adjusting system and a micro leakage detection unit; a to-be-tested sealing element is installed in the sealing element installation device to form a sealing cavity, and the sealing cavity is communicated with the pressure control system, the flow adjusting system and the hydraulic oil tank through pipelines to form a closed hydraulic loop. The vibration device is arranged on the outer side of the sealing element mounting device and used for applying vibration loads, the pressure control system is used for providing and adjusting hydraulic pressure in the sealing cavity, the flow adjusting system is used for controlling the flowing speed and flow of a hydraulic medium, and the micro-leakage detection unit is arranged below the sealing element mounting device and used for detecting leakage of the sealing cavity. The method has the advantages of being high in test condition controllability, high in leakage detection sensitivity, wide in adaptability and high in test result engineering guidance.

The invention belongs to the technical field of integrated circuit testing, and particularly relates to an FPGA software and hardware cooperation testing platform based on a BFM. The test platform is formed by connecting a BFM with a Testbench, an AXI bus, an off-chip DDR and a DUT. The test process comprises the steps that the Testbench issues parameters through a transaction function interface, the BFM reads an excitation vector from the off-chip DDR / on-chip BRAM through an Avalon main interface, adaptive transmission of a system bus clock domain and a DUT clock domain is completed through double asynchronous FIFO (SNDfifo / RECfifo), and signal level interaction with the DUT is achieved through a pin protocol interface; the state machine dynamically switches long and short simulation modes according to the vector length, and drives the output vector to be written back and stored; the error monitoring unit monitors data flow faults in the whole process and outputs seven types of error reporting codes. The simulation equivalent frequency reaches a 10 megahertz level, and the method is suitable for efficient verification of the digital IC.

The invention relates to the technical field of generator test equipment, and particularly discloses a comprehensive test platform for a generator. The bearing assembly, the hoisting assembly and the testing instrument are installed on the vehicle body, the bearing assembly comprises two bearing arms and a driving mechanism, and weighing sensors are installed on the bearing arms and can be far away from and close to each other; the test instrument can obtain related test data based on weighing data fed back by the weighing sensor. The comprehensive test platform for the generator can move, can automatically complete loading and unloading of the diesel generator, does not need assistance of other equipment, and remarkably reduces the requirements for site conditions; data such as the whole machine weight, the fuel consumption rate and the operation stability can be measured, the test items are rich, and the functions are complete; and the transfer frequency in the comprehensive test process can be effectively reduced. After the test is completed, the diesel generator can be transferred and loaded to another test device, which is efficient and fast; and meanwhile, the method has the technical advantages of good applicability, easiness in implementation, relatively low cost and the like.

The invention relates to the field of metal material testing, in particular to equipment for testing material performance, which comprises a testing platform, the testing platform is provided with a detection mechanism, a supporting mechanism, an extrusion mechanism and a power mechanism, the extrusion mechanism and the power mechanism are arranged on the supporting mechanism, and the extrusion mechanism comprises an extrusion block and a reversing unit for adjusting the orientation change of the extrusion block. At least one end of the extrusion block is open, the extrusion block is used for shearing and crushing a to-be-tested substrate, and a rotating handle is arranged on the extrusion block; and the power mechanism comprises a shearing driving unit and a pressure driving unit which are used for driving the extrusion block to move. By implementing the scheme, the test efficiency of the magnesium alloy material under various test conditions is improved.

The invention provides a vibration measurement device for motor equipment, and relates to the field of vibration measurement, and the device comprises a main body support frame, and the left and right sides of the top of the main body support frame are provided with self-locking worm gears A; a mounting angle adjusting shaft is rotationally mounted on the inner side of the main body supporting frame; self-locking worms A are arranged on the left side and the right side of the mounting angle adjusting shaft; the self-locking worm A is matched and connected with the self-locking worm gear A; guide pieces are arranged on the left side and the right side of the main body supporting frame. A mounting angle adjusting part is arranged in the middle of the mounting angle adjusting shaft; the vibration testing device can test vibration of motor equipment at different installation angles and output angles, the universality and accuracy of the vibration testing result of the device are improved, and the problem that the vibration amplitude of the motor equipment is affected to a certain extent due to installation modes at different angles is solved. And a vibration measurement result obtained by only testing plane installation does not have universality.

The invention belongs to the technical field of piezoelectric element testing, and particularly relates to a high-temperature piezoelectric sensitive element sensitivity calibration device which comprises a frame, a plurality of test benches vertically arranged in the height direction of the frame at equal intervals, a heating unit in the frame, a measuring circuit, a processing unit and prompt units on the test benches. Each test board is provided with a piezoelectric element fixing seat and a force applying device, the measuring circuit is connected with the fixing seat to collect output signals, the processing unit calculates sensitivity deviation and temperature deviation and obtains a reminding coefficient by establishing a unified reference and calibrating the measuring circuit, periodically collecting the output signals and temperature data, and when the coefficient meets a preset condition, the force applying device is started. And the control prompt unit gives an adjustment instruction, and after adjustment, resetting and data recording are performed. The device realizes multi-element synchronous calibration through parallel layout of multiple test benches and independent temperature control, combines temperature and attitude real-time compensation, not only improves calibration efficiency, but also guarantees calibration precision, and is suitable for sensitivity calibration of piezoelectric sensitive elements in a high-temperature environment.

The application relates to the field of detection devices and discloses a high-precision gas bearing static characteristic test table, which comprises an optical base, a detection table arranged on the optical base, a suspension support arranged on the optical base, a detection cylinder arranged on the suspension support and located directly above the detection table, a gas floating ball hinge arranged at the driving end of the detection cylinder, a pressure sensor arranged at the bottom of the gas floating ball hinge, and an upper floating bearing plate arranged at the bottom of the pressure sensor and used for being pressed on the detection table. A laser interference measurement assembly is arranged between the lower surface of the upper floating bearing plate and the upper surface of the optical base and used for measuring the displacement and inclination of the lower surface of the upper floating bearing plate. The application can accurately evaluate the partial static characteristics of the gas bearing.

The invention discloses a robot joint transparency testing method and device, and belongs to the technical field of robot joint testing. According to the method, the transmission transparency is evaluated by testing three indexes including the ratio of joint reverse drive torque to the maximum output torque, the torque control bandwidth and the correlation between motor current and output torque; the device comprises a driving mechanism, a loading mechanism and a test platform with a sliding assembly, the driving mechanism is connected with a joint input end through a coupling, and the loading mechanism is connected with an output end. According to the invention, a quantitative evaluation system of transmission transparency is established, a modular device capable of separably testing joint motor reverse drive torque (distinguishing charged / uncharged states) and speed reducer forward / reverse drive efficiency is designed, and accurate data support is provided for joint performance optimization.

The invention discloses a motor test bench system, which comprises a hardware system architecture and a software system architecture, wherein the hardware system architecture comprises a mechanical load and sensing unit, a centralized power supply and excitation unit, a data acquisition and control center and an upper computer system; the software system architecture comprises a unified data layer, an automatic control layer, a dynamic load regulation layer, a full-automatic test sequence layer, a man-machine interaction layer, a data analysis and report layer and a collaborative development interface; the problems that an existing test bench is single in signal collection, incomplete in information collection and poor in data synchronism; the load cannot be dynamically changed in real time; and high-order test data results are poor in visualization and cannot be directly converted into test reports.

The utility model discloses a device used for detecting parameters of a mowing robot, comprising a workbench and a mowing robot, the workbench is provided with a test platform, the mowing robot is installed on the test platform, the device also comprises three-axis electrical parameter modules, the two sides of the test platform are both provided with the three-axis electrical parameter modules, and the three-axis electrical parameter modules are connected with the test platform. The three-axis electrical parameter module is used for detecting information of a wheel set and a cutter head of the mowing robot. The wheel set information of the mowing robot can be collected through the self-resetting wheel speed measurement module, the cutter information of the mowing robot can be collected through the photoelectric sensor, and the information can be collected through the PCB main control board.

The invention discloses an optical lens weather resistance test system, and belongs to the technical field of weather resistance detection, the optical lens weather resistance test system comprises a test bench, the test bench is composed of an upper mobile station and a lower fixed seat, the upper mobile station and the lower fixed seat are connected through a lifting control device, and the upper mobile station and the lower fixed seat are both provided with a plurality of optical lens test units; a plurality of storage lifting push rods are arranged on the upper moving table, the output ends of the storage lifting push rods are connected with storage inner rings, the storage inner rings are connected with storage outer rings through connecting rods, and the storage outer rings and the storage inner rings are provided with storage clamping pieces which are matched with each other to position and clamp optical lenses. According to the invention, the optical lens is divided into regions through the isolation cover ring body, and tests of bacterial erosion are carried out for plating types in different regions, so that interference among bacteria is avoided, the accuracy of test data is ensured, various strain erosion tests can be carried out at the same time, and the efficiency of weather resistance detection of the optical lens is remarkably improved.

The invention discloses a self-adaptive test system and method for a hydraulic power unit, and the system comprises a test bench which is provided with a fixing tool for fixing the tested hydraulic power unit; the oil tank unit is arranged in the test bed and is used for supplying oil to and pumping oil from the tested hydraulic power unit; and the counterweight test unit is arranged in the test bench, the counterweight test unit comprises a counterweight module, and the counterweight module is connected with a working oil port of a tested hydraulic power unit through a first oil path. The device is simple in structure, directly simulates the real gravity load borne by the hydraulic execution mechanism through the counterweight module, and can accurately test the lifting and descending dynamic performance and the pressure maintaining internal leakage characteristic of the power unit under the load condition. The problems that a traditional back pressure method cannot truly simulate the gravity load, and descending speed control and energy recovery performance are difficult to evaluate are effectively solved.

The invention discloses a Y-axis knife rest reliability test bed with hybrid loading and precision testing integrated and a test method, and belongs to the technical field of reliability testing of key components of numerical control machine tools. The test bench comprises a test bench base, an automatic rotary table, a torque loading device, a loading device base, a dynamic force loading device, an analog loading rod, a Y-axis positioning precision testing device, a tested Y-axis tool rest, a transposition precision testing device and a console. A tool rest bottom plate of the test bench base is controlled by a console to move left and right and up and down, and a tested Y-axis tool rest is installed on the tool rest bottom plate. The automatic turntable comprises a turntable driven by a motor; the torque loading device comprises a generator fixed on the rotary table, and the output end of the generator is fixedly connected with a magnetic gear; the analog loading rod comprises a vertical shaft and a horizontal shaft which are in vertical transmission; the lower end of the vertical shaft is in electromagnetic induction non-contact connection with the magnetic gear; the tail end of the horizontal shaft is connected with the output end of the tested Y-axis tool rest. And the dynamic force loading device can apply a load to the analog loading rod shell.