6125 results about "Test bench" patented technology

The invention belongs to the technical field of bearing fault diagnosis, and particularly relates to a transmission casing typical small bearing fault weak vibration signal extraction method, which comprises the following steps: reconstructing a bearing vibration signal to obtain a modulation impact signal, and calculating a weighted kurtosis value based on the modulation impact signal to improve a Protugram algorithm; noise interference is added to a bearing fault signal, and extraction of a small bearing fault weak impact signal is realized by optimizing a filtering frequency band based on a weighted kurtosis value improved Protugram algorithm; bearing impact characteristics can be enhanced based on a simulation sensor resonance enhancement algorithm (SPM); the impact quantification of the bearing can eliminate the influence of different rotating speeds and load working conditions, and realizes the quantitative diagnosis of bearing faults. And finally, the fault data of the rolling body, the inner ring and the outer ring of the flight attachment case small bearing part test bed are verified, and effective extraction and enhancement of bearing fault weak signals can be realized.

The invention discloses a wiring harness dynamic load and electromagnetic interference coupling test method, and relates to the technical field of wiring harness testing, and the method comprises the steps: S1, defining a plurality of environment parameter groups, and constructing a test platform; s2, dynamic current pulse and multi-axis vibration excitation are synchronously loaded; s3, applying broadband electromagnetic interference signals and monitoring signal crosstalk amplitude and bit error rate changes; s4, the sensor nodes are dynamically configured according to the topological structure of the wire harness; s5, generating a feature vector; s6, outputting a wire harness performance index; s7, outputting a wire harness fault probability prediction value; s8, obtaining prediction data; s9, triggering a high-speed data recording mode, and storing original sensor data 60 seconds before the fault; and dynamically adjusting the gradient step length and the loading sequence in the environment parameter group. Performance evaluation, fault prediction and service life management can be carried out on the wire harness under complex working conditions, and the reliability and safety of an automobile electrical system are improved.

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.

A virtual synchronization method for an energy storage system and a radial-flow water turbine generator set, said method comprising: analyzing characteristics of a radial-flow water turbine generator set, and designing a suitable energy storage system so as to smooth the power fluctuation of the radial-flow water turbine generator set (S1); acquiring characteristic parameters of the radial-flow water turbine generator set, on the basis of the characteristic parameters, designing a virtual rotor model, and establishing a machinery dynamics equation (S2); on the basis of the virtual rotor model, designing a virtual synchronization controller, constructing a closed-loop control system, and implementing charging and discharging control for the energy storage system (S3); establishing a simulation model for coupling the energy storage system and the radial-flow water turbine generator set, and optimizing parameters of the controller (S4); and, on a test platform of an actual radial-flow water turbine generator set, implementing a proposed virtual synchronous control policy, and carrying out experiment verification and result analysis (S5).

The invention relates to the technical field of testing, in particular to electric connector joint testing equipment which comprises a testing table and a digital display control panel, a mounting cavity and a testing cavity are formed in the testing table, and two clamping structures are arranged in the testing cavity. A second electric telescopic rod capable of driving one of the clamping structures to move in the test cavity is arranged in the test table, and an eccentric connecting rod driving mechanism capable of driving the other clamping structure to move in the test cavity in a reciprocating manner is arranged in the mounting cavity; the eccentric connecting rod driving mechanism can simulate the plugging action of an electric connector joint through the transmission of a rotating motor, a speed reducer, a turntable, a connecting rod and a driving shaft; the pressure sensor monitors the plugging force in real time, the vibration motor simulates the vibration working condition, the performance of the electric connector joint in actual use can be tested more comprehensively, the deviation adjusting structure can adjust the position of the driving head end of the driving shaft, tests in different deviation states are simulated, and the accuracy and authenticity of the tests are further improved.

The invention discloses an air conditioner efficiency test system and a control method of an air conditioner efficiency test platform. The method comprises the following steps: dynamically adjusting the air dry bulb / wet bulb temperature of a test room of an existing test bed based on a dynamic temperature control adjusting technology; acquiring a real-time building thermal load of the test room through a building thermal load prediction simulator; the dynamic change of the air dry-bulb temperature of the test room is calculated in real time through the indoor air dry-bulb temperature prediction simulator; and the dynamic change of the air wet bulb temperature of the test room is calculated in real time through the indoor air wet bulb temperature prediction simulator. According to the invention, the problem that the dynamic operation energy efficiency and performance parameters of the tested air conditioner cannot be obtained through the enthalpy difference method test bench because the existing enthalpy difference method test bench cannot control the dynamic change process of the building thermal load of the test room along with the refrigeration / heating capability of the tested air conditioner in the prior art is solved; and the actual operation performance level of the air conditioner cannot be reflected.

The invention belongs to the technical field of ship bearings, and particularly relates to a ship bearing radial loading test bench and method for simulating ice load and water immersion working conditions, and the method comprises the steps: installing a to-be-tested intermediate bearing on a test platform, enabling the intermediate bearing to sleeve a test shaft, starting a cooling water circulation system to control the flow, cooling water enters a cooling water coil pipe to establish oil pool cooling circulation; a driving motor is started; a test shaft stably operates through equipment such as a reduction gearbox and the like; a dynamic pressure lubrication state is established, a radial dynamic load or a stable constant load is applied through a hydraulic loading system to simulate an icebreaking load working condition, and a simulated water body is injected into a water tank; the test conditions of the intermediate bearing in a ship immersion environment are constructed through water pressure adjustment, the temperatures of lubricating oil, a bearing bush and cooling water are monitored in real time, the loading force is adjusted through feedback data, and the performance of the intermediate bearing is judged after the test is finished. The problems that ice excitation and soaking environment simulation are insufficient and a loading structure is eccentric in the prior art are solved, and high-precision cooling and thermal stability evaluation are achieved.

The invention relates to the technical field of microcrystalline glass detection, in particular to a microcrystalline glass panel structural strength detection device. Comprising a driving mechanism, an impact head, a test board, a first container and a second container. The test bench is used for installing a to-be-tested microcrystalline glass panel. The driving mechanism is in transmission fit with the impact head, so that the impact head can periodically impact a to-be-tested glass ceramic panel mounted on the test board. The impact head is provided with an internal flow channel. The first container is used for containing hot fluid media, and the second container is used for containing cold fluid media. And the first container and the second container are communicated with the internal flow channel through a switch control mechanism. The switch control mechanism is used for alternately communicating one of the first container and the second container with the internal flow channel so as to adjust the temperature of the impact head. The structural strength of the microcrystalline glass panel can be specifically tested according to the application scene in the actual use process, the integrating degree of the test process and the actual application scene is higher, and the test result has higher reference value.

The invention provides an EMB clamping force estimation method. The method comprises the steps that an EMB clamping process mechanism model is built; the method comprises the following steps: acquiring data of EMB clamping force, a motor rotation angle and a brake disc temperature based on an EMB test bed, and building an EMB clamping force fitting model; acquiring data of motor current, motor voltage, motor rotating speed, motor rotating angle, brake disc temperature, clamping force and driving mileage based on an EMB test bench, and building an EMB clamping force data model; a first clamping force estimation value, a second clamping force estimation value and a third clamping force estimation value are calculated based on real vehicle EMB data, and a clamping force fusion estimation value is calculated in combination with a Kalman filtering algorithm; according to the clamping force estimation error, the weights of the first estimation value, the second estimation value and the third estimation value of the clamping force are adjusted in a self-adaptive mode, and the clamping force estimation precision is optimized. According to the method, the advantages of the mechanism model, the offline data and the online data can be fully combined, the fusion weight is continuously corrected according to the estimation error, and accurate estimation of the clamping force of the EMB without the clamping force sensor is realized.

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 discloses a mechanical property testing method for an inflatable wing, and belongs to the technical field of aerospace testing. The method comprises the following steps: S1, wing installation: clamping an inflatable wing on a test board, and enabling a chord plane of the inflatable wing to be perpendicular to a loading direction; s2, applying a load: driving a loading mechanism to apply a vertical load to the inflatable wing through an external universal tester; s3, data acquisition: synchronously acquiring a deflection curve and stress distribution data by using a displacement measurement unit and a strain detection unit; and S4, failure judgment: when monitoring that the shape of the deflection curve suddenly changes or the strain data exceeds a threshold value, judging that the inflatable wing is subjected to buckling failure, stopping loading and recording the maximum load. The test bench serves as an expansion platform of a universal tester, can be adapted to a large-size inflatable wing, does not need special equipment, reduces the cost, realizes cooperative monitoring of displacement and strain data, realizes closed-loop control of inflation air pressure-deformation-load, and remarkably improves the test precision and the data reliability.

The invention relates to the technical field of vibration test, and discloses a micro-seismic environment simulation vibration test board and a test method thereof, which realize high-fidelity simulation of multiple types of micro-seismic scenes through a multi-source composite signal generation and waveform reconstruction technology. The dynamic adjustment capability of the control strategy is improved by using disturbance compensation and an adaptive control mechanism, real-time analysis and early warning feedback are performed on the response state in the test process based on the vibration characteristic evaluation result, and an auxiliary decision basis is provided for the vibration control strategy. Besides, a hierarchical closed-loop regulation and control mechanism is logically formed based on local output regulation among multiple axes and a global control strategy, and closed-loop linkage of the control strategy, execution response, state evaluation and control correction is realized, so that the overall regulation and control precision, response sensitivity and test precision are remarkably improved; accurate simulation and stable control of a three-dimensional vibration field are realized.

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 discloses a highway bridge expansion joint compression test device, and belongs to the field of expansion joint test devices.The highway bridge expansion joint compression test device comprises a test bed, two sliding rails are symmetrically fixed to the top of the test bed, two limiting mechanisms symmetrically slide on the sliding rails, and an L-shaped supporting seat is fixed to the middle of the back face of the test bed; a hydraulic cylinder is installed in the middle of the top of the L-shaped supporting seat, the output end of the hydraulic cylinder extends to the position over the test bed and is fixedly provided with a pressure testing mechanism, the pressure testing mechanism comprises a fixing plate, the fixing plate is fixedly connected with the output end of the hydraulic cylinder, and three sets of hollow-square-shaped pressing frames are fixed to the bottom face of the fixing plate at equal intervals; the connecting plates are arranged between the two adjacent hollow-square-shaped pressing frames; the fixed frame is fixedly connected to one end of the bottom of the connecting plate. According to the invention, under the stable pressure, the condition that the vehicle performs rolling test on the expansion joint under different conditions is simulated, so that the accuracy of testing the compression resistance of the expansion joint is improved.

The invention belongs to the technical field of coal field fire evolutionary analysis, and particularly provides a visual coal field fire evolutionary process analog simulation test device and method. The test device comprises a test bench, a physical similarity model, a fiber bragg grating temperature and stress integrated monitoring system, a multi-gas monitoring system, an image and video monitoring system and a computer analysis system. A plurality of opening frames are sequentially fixed to form test box bodies, the physical similarity model is arranged in the test box bodies, the inclination angle of the test box bodies is adjusted through an inclination angle adjusting mechanism, and the gas supply system and the ignition system are connected between the test box bodies. The fiber bragg grating temperature and stress integrated monitoring system, the multi-gas monitoring system and the image and video monitoring system are respectively in signal connection with the computer analysis system. According to the invention, visualization of coal field fire evolution processes under different conditions can be realized, and real-time monitoring of change rules of a temperature field, a seepage field and a fracture field in the coal field fire evolution processes under different conditions can be realized.

The invention relates to a tractor clutch test bench cooperative control method based on MPC-BP neural network PID, and belongs to the technical field of tractor clutch performance testing. The method specifically comprises the steps of establishing an enhanced mathematical model of a tractor clutch test bed system; an MPC prediction controller is designed, and an optimal control sequence is generated through rolling optimization of an objective function; a BP neural network PID controller is improved; a multi-unit cooperative control strategy is designed, MPC prediction and BP neural network PID control are combined, and cooperative adjustment of the torque of the loading unit, the rotating speed of the driving unit and the displacement of the clutch separation mechanism unit is achieved; a self-adaptive adjustment and load compensation mechanism is introduced, and the adaptability of the system to different working conditions and clutch models is improved through online model correction, heat fading modeling and fault diagnosis. The control precision, the dynamic response speed and the robustness of the test bed are remarkably improved, and the test bed can be widely applied to research, development and performance testing of the tractor clutch.

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 relates to the technical field of coating testing devices, and particularly discloses an induction cooker glass ceramic functional coating testing device which comprises a base and a detection box located on the base, a detection cavity is formed in the detection box, a testing table is arranged in the detection cavity, and the testing table comprises a testing execution mechanism and a testing placement seat; the test execution mechanism comprises a friction disc, an electromagnetic coil is arranged in the friction disc, and a groove which is spirally distributed is formed in the bottom of the friction disc; the test placement seat comprises a loading table of which the middle of the top is provided with a to-be-tested coating panel in a position corresponding to the friction disc, the periphery of the top of the loading table is provided with a convex check ring, the upper part of the convex check ring is provided with a nozzle corresponding to the to-be-tested coating panel, and the nozzle is communicated with a storage tank arranged at the bottom of the loading table through a pressurizing pipeline; a magnetorheological abrasive is stored in the storage tank; the device has the advantages of high test precision and real test simulation.

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 discloses a packaging device for semiconductor chip production, which comprises a test board, an airflow guide mechanism and a pushing mechanism, and is characterized in that the top of the test board is provided with a mounting groove, the top of the mounting groove is fixedly provided with a packaging mold seat through bolts, and one side of the top of the test board is provided with a moving mechanism; by means of uniform arrangement of the silica gel air suction soft conical heads, air pressure adsorption force is promoted to be dispersed through the silica gel air suction soft conical heads, concentrated adsorption force on fragile chip materials is reduced, concentration of local stress is avoided, the chip materials are indirectly protected, certain deformation is generated in cooperation with the flexible cones of the silica gel air suction soft conical heads, the adsorption stability is guaranteed, and the service life of the chip materials is prolonged. And the flexible fillets do not damage the chip materials, so that the protection effect on packaging operation is improved, the packaging structure can adapt to various chip materials, and the relative stability and safety of the structure are improved.

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 invention belongs to a drilling operation tool, and particularly relates to a rock breaking drilling simulation experiment bench of a drilling tool system. The rock breaking drilling simulation experiment bench of the drilling tool system is mainly composed of a main frame, a bottom frame, a hydraulic cylinder, a power module, a vibration measurement module and a bit pressure-torque measurement module. A certain drilling tool combination can be selected to perform a drilling experiment on a certain rock, a single-drill-bit rock breaking or / and while-drilling reaming rock breaking drilling operation experiment can be realized, and drilling pressure, rotating speed, torque and drilling tool and drill bit vibration and motion trail parameters are acquired in a multi-point manner; the experiment bench is provided with a hydraulic lifting device, so that conditions of a horizontal well, a vertical well, an inclined well and the like can be simulated. According to the invention, different drilling operation modes such as simulation of a horizontal well, a vertical well and different types of boreholes with different inclination angles, single-drill-bit drilling and reaming while drilling can be realized, the universality of the experiment bench is improved, and diversified and perfect experiment conditions are provided for related research.

The invention discloses a safety rope wear resistance detection device which comprises a test board, a reciprocating driving mechanism, a friction mechanism, a counterweight mechanism, a dynamic tension adjusting assembly and two positioning mechanisms, a transverse guide rail is arranged at the top of the test board, a sliding plate is arranged on the transverse guide rail, and the reciprocating driving mechanism is connected with the sliding plate; the counterweight mechanism is arranged on one side of the test board in an up-and-down sliding mode, the friction mechanism is arranged on the test board, the limiting mechanism is connected with the mounting frame in an up-and-down sliding mode, the rotating plate is rotationally arranged on the fixing frame, the rotating plate is driven by the rotating driving mechanism, and the dynamic eccentric distance adjusting mechanism is arranged on the rotating plate and connected with the limiting mechanism through a connecting rod. The vibration mechanism is arranged on the limiting mechanism and connected with the rotation driving mechanism through the linkage mechanism. Therefore, the conditions of continuous change of tension and self vibration of the safety rope in the actual use process can be effectively simulated, so that the comprehensiveness and the accuracy of wear resistance detection indexes of the safety rope are effectively improved.

The invention discloses a steering column performance test bench and a test method thereof, and relates to the technical field of steering column performance test. The steering column performance test bench comprises a detection bench, a servo motor and a driving assembly, and is used for driving the upper surface of the detection bench to rotate. A first hydraulic rod is hinged to the mounting frame, a same connecting plate is hinged to the other end of the first hydraulic rod and the lower position of the outward side of the mounting frame, two clamping pieces are arranged on the upper side and the lower side of the outer side of the connecting plate, and the upper clamping piece and the lower clamping piece on the same side are used in cooperation and used for clamping a steering column; and the moving assembly is used for driving the mounting frame, the first hydraulic rod above the mounting frame, the clamping piece and the steering column to do horizontal reciprocating motion. According to the invention, multiple performance tests can be carried out on the same steering column in sequence, the automation degree is high, the overall test time is shortened, and the test efficiency is improved.

The invention discloses a multifunctional angle module test bench which is composed of a bench base, a load simulation device and a pavement simulation device. The bench base is provided with a lifting sliding column, and the height of a loading platform can be adjusted to adapt to suspension deformation; the load simulation device realizes vertical load adjustment by increasing or decreasing balancing weights; the pavement simulation device integrates a belt pulley shaft, a motor, a magnetic powder brake and a pressure oil cylinder, and simulates pavement resistance through belt rolling; during testing, the angle module body is fixed to a loading platform, tires make contact with a belt to achieve dynamic testing, a magnetic powder brake increases resistance torque for a main belt wheel shaft so as to simulate different road conditions, a motor drives the belt to test regenerative braking performance, and a pressure oil cylinder is matched with a thrust bearing to measure axial loads. The steering resistance and tire mechanical property test is completed by changing the included angle between the wheel and the belt motion direction; according to the invention, driving, braking, steering and suspension system testing functions are integrated, and multi-working-condition comprehensive performance detection is realized.

The invention discloses an experiment table system for an axial flow compressor of an aero-engine, and aims to break through the bottleneck by designing single-stage test and surge simulation, so that the experiment table system can measure experiment parameters such as pressure, flow, temperature and rotating speed of the axial flow compressor. Comprising an axial flow compressor suite, a sensor suite, a PLC, an asynchronous motor, an electric control valve and an exhaust device. A driving shaft of the asynchronous motor is connected with the axial flow compressor suite; the exhaust device is located at the rear end of the axial flow compressor suite, and the electric control valve is arranged on an airflow channel of the axial flow compressor suite and the exhaust device. The sensor suite is used for detecting pressure, temperature and air flow signals of the axial flow compressor and sending the collected signals to the PLC, and the PLC sends the signals to the industrial personal computer; the industrial personal computer controls the opening degree of a throttle valve of the electric control valve through the PLC, and the flow of air flowing through the axial flow air compressor is changed. The industrial personal computer controls the rotating speed of the asynchronous motor through the frequency converter.

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 belongs to the field of shield tunneling machines, and discloses an intelligent posture deviation correction control method and system for a continuous tunneling shield tunneling machine, and the method comprises the steps: carrying out a pushing and splicing synchronous construction experiment to collect data; integrating the BiLSTM and the KAN, and predicting the posture of the continuous tunneling shield tunneling machine; in combination with an MOGWO method, an optimal proportional-integral-differential (PID) parameter is determined, and attitude deviation is minimized. The invention provides a shield attitude intelligent control method integrating deep learning, physical modeling and an intelligent optimization algorithm. The key innovation point is that the KAN model and the BiLSTM model are combined to accurately predict the attitude of the continuous tunneling shield machine in various assembling hydraulic oil cylinder missing scenes. And then combining the improved BiLSTM model with an MOGWO algorithm to optimize the response performance of the propulsion hydraulic system, and finally improving the efficiency and quality of tunnel construction. Verification research is carried out by utilizing actual measurement data of a continuous tunneling shield tunneling machine test bed, and the effectiveness of the method is verified.