422 results about "Field tests" patented technology

The invention discloses a spherical crown dome horizontal circumference drilling and blasting parameter model optimization construction method, and the method comprises the steps: collecting geological, crustal stress, hydrological and structural plane data, building a three-dimensional geological information model, carrying out the working condition partitioning based on a surrounding rock quality evaluation index, and constructing a parameter probability distribution model and an uncertainty boundary of each partition. Therefore, precise space description and parameter variability quantification of the spherical crown dome construction area are realized. The method comprises the following steps: establishing a three-dimensional numerical model of a cavern group, integrating blasting power, seepage and stress multi-physical field effects by adopting a finite element-discrete element coupling method, introducing a surrounding rock deterioration constitutive model considering cumulative damage and unloading aging, calibrating key parameters through an indoor test and field trial explosion, and establishing a three-dimensional model of the cavern group. And the numerical model can truly reflect the mechanical property degradation track of the surrounding rock under repeated blasting disturbance.

The invention discloses a follow-up PIV boundary layer flow field test system and test method based on electrolytic hydrogen bubbles. The follow-up PIV boundary layer flow field test system comprises an integrated optical measurement module and a tracer particle generation module, the optical measurement module is arranged in the UUV and comprises a laser transmitter assembly, a sapphire prism and two imaging cameras which are symmetrically arranged, and laser sheet light forms a sheet light area on the outer surface of the UUV after being refracted by the sapphire prism; the tracer particle generation module comprises a cathode, an anode and a power supply unit, the cathode is a platinum wire array composed of a plurality of platinum wires arranged in the axial direction of the UUV, and the platinum wires are located at different heights away from the wall face of the UUV; the power supply unit selectively electrifies the platinum wire, independently adjusts the voltage, controls the number and frequency of generated hydrogen bubbles, and achieves the synchronous measurement of flow field information at different thickness positions of a boundary layer. According to the invention, boundary layer flow field in-situ follow-up measurement and synchronous fine measurement of different thickness positions under the condition of not changing the UUV shape are realized, and the device has the advantages of high integration level, small flow field disturbance, high measurement efficiency and the like.

The invention discloses a wind turbine fairing optimization design method, which relates to the technical field of fluid machinery and engineering, and comprises the following steps: a basic parameter acquisition and working condition defining step: collecting wind turbine model parameters, and measuring the wind condition of an operation area; the flow guide cover is divided into a windward section, a middle section and a wake flow section; a multi-objective optimization system construction step: determining aerodynamic resistance, structural strength, weight and wake flow influence optimization objectives; an optimization algorithm iteration solving step, wherein an improved non-dominated sorting genetic algorithm is adopted; a simulation verification and parameter correction step: selecting a scheme to perform CFD and finite element simulation; and a physical prototype manufacturing and performance testing step: manufacturing a prototype, and carrying out wind tunnel and field testing. The design efficiency of the air guide sleeve is improved, systematicness is optimized, pneumatic, structure and weight multi-target balance is achieved, cross-model universality is improved, and the problems that traditional design is dependent on experience and unbalanced in performance are solved.

A memory built-in self-test (BIST) controller, corresponding to a partition BIST controller, is configured to control memory testing in one or more corresponding static random access memories (RAMs) and has a first corresponding register configured to store a failure indicator for each of the one or more corresponding RAMs and a second corresponding register configured to store an uncorrectable failure indicator for each of the one or more corresponding RAMs. The partition BIST controller is configured to generate, based on the first and second registers of the MBIST controller, a first in-field test status indicator which indicates whether a failure occurred during memory testing of any RAM corresponding to the partition BIST controller and a second in-field test status indicator which indicates whether an uncorrectable failure occurred during the memory testing of any RAM corresponding to the partition BIST controller.

The invention relates to the technical field of dredging engineering, in particular to a trailing suction dredger fine particle loading efficiency optimization method, which comprises the following steps: through numerical simulation and field test, determining the influence rule of factors such as sediment particle size, cabin entering concentration, cabin entering flow, cabin entering height, mud cabin structure, overflow cylinder and energy dissipation box arrangement and the like on fine particle sediment loading efficiency; according to a numerical simulation result, parameter sensitive factors are defined, meanwhile, sensitive factors of all influence factors are calculated and sorted, main factors influencing the loading efficiency are determined, and a corresponding optimization design scheme is provided based on an analysis result of the influence factors, so that the loading efficiency of the fine-particle sediment is effectively improved, and the loading efficiency of the fine-particle sediment is improved. According to the technical scheme, quantitative control over the loading overflow time is achieved, the loading earthwork volume is increased, and overflow losses are reduced.

The invention relates to the technical field of soil physical parameter in-situ measurement, and discloses a soil layer natural water content portable intelligent measuring instrument based on multi-source sensing fusion, which comprises a composite probe assembly and an intelligent measurement and control host which are physically connected, the composite probe assembly is configured to be inserted into a soil layer to be tested to construct a multi-physical field test environment, and an electrical transceiving unit and an acoustic transceiving unit are integrated in the composite probe assembly. By constructing a cross physical field excitation and multiphase parameter collaborative decoupling mechanism, a multidimensional dynamic correlation model is established by using the thermosensitive drift characteristic of the sound velocity of a mixed medium during thermal disturbance and the transient step response of a dielectric constant under an acoustic radiation force field; the problems that the coupling influence of the water content and the volume weight cannot be distinguished and the conductivity of bound water and the conductivity of free water are difficult to separate in a traditional means are effectively solved, and four independent physical quantities including the volumetric water content, the in-situ dry volume weight, the bound water content and the actual conductivity of pore water are synchronously inverted through a single probe. And the decoupling precision of the equipment on complex multi-phase soil medium parameters is improved.

The invention discloses a water turbine local turbulence field prediction method, and relates to the technical field of water turbines. The method comprises the following steps: S1, data acquisition and preprocessing; s2, sparse measurement point feature extraction; s3, low-dimensional representation of the turbulent flow field; s4, carrying out double-model joint training; and S5, performing real-time prediction. According to the method, the global turbulent flow field prediction can be realized only by using the pressure / speed time sequence data of a small number of sparse measuring points in the water turbine runner, and an expensive full flow field experiment table does not need to be built or a dense sensor array does not need to be deployed. Compared with the traditional experimental measurement (the equipment cost is more than ten million yuan), the total investment of the sensor and the computing equipment is only ten thousand yuan, and the cost is reduced by more than 99%; meanwhile, the installation difficulty of the sensor in a high-flow-speed and high-pressure area is avoided, the existing monitoring point layout of a hydropower station can be directly adapted, the technology landing feasibility is remarkably improved, and the model architecture does not depend on a specific water turbine type and can be adapted to different types such as a mixed-flow type and an axial-flow type by adjusting grid parameters and training data.

The invention discloses a damage safety assessment method and system for a building service glass curtain wall, and the method comprises the steps: setting a plurality of damage conditions based on a glass curtain wall standard test piece, and building a function relation between the maximum panel deflection and the inherent frequency through a regression analysis method; calculating the maximum theoretical panel deflection according to specifications, substituting the maximum theoretical panel deflection into the function relationship to obtain a critical inherent frequency, and constructing a safety evaluation model according to the critical inherent frequency; and acquiring the actual inherent frequency of the curtain wall to be tested, and evaluating the damage safety state of the curtain wall according to the model. According to the invention, rapid and efficient safety assessment can be carried out on the active glass curtain wall without damaging the rubber material body, and large-area screening and regular inspection can be realized; field test provides real data, finite element simulation supplements multiple working conditions, and data accuracy and model universality are guaranteed; the obtained inherent frequency reflects the essential attributes of the structure, and the damage detection and evaluation sensitivity is high; according to the constructed evaluation model, the result is direct and reliable through comparison between a safety threshold value and actual measurement.

The invention discloses a self-adaptive test question generation method and device, a medium and equipment, and belongs to the field of test question generation. Multi-source learning data of a user is obtained and input into a user intention recognition model, and the learning intention category of the user is accurately determined. And according to the category, screening a matching template from a structured Prompt template library, and filling a slot in combination with user portrait data to generate a natural language Prompt. Then, knowledge fragments in the relay protection field knowledge base are retrieved and spliced through an RAG knowledge enhancement mechanism, an input sequence is formed, finally, a large language model is input to generate personalized relay protection field test questions, and the learning efficiency and experience are improved. The problem that the relay protection test questions cannot be accurately and efficiently generated in the prior art is effectively solved.

The invention discloses a salt mine sediment void petroleum and brine migration simulation and parameter optimization evaluation method, which comprises the following steps: obtaining physical characteristic parameters of salt mine sediment, petroleum and brine, the sediment parameters at least comprising void ratio and pore connectivity obtained through CT scanning; calculating an evaluation index based on a simulation result, and performing quantitative evaluation and feasibility screening on the migration process; if the optimal potential exists, parameter optimization and scheme iteration are further executed, and a simulation-evaluation-optimization closed loop is formed; and finally, checking the model through field test data. The method solves the problem that in the prior art, no means for simulating and evaluating the two-phase migration of the petroleum brine in the salt mine sediment gaps exist, the process can be quantitatively simulated, evaluated and optimized, and scientific, accurate and systematic technical support is provided for petroleum storage through the high-impurity salt mine sediment gaps.

The invention discloses an aerospace field test case generation method based on a knowledge graph. The method comprises the following steps: establishing a test field knowledge graph model comprising four layers of entities, namely a test item, a test case, a test process and a problem list; identifying test entities from a historical test document, and establishing inclusion, execution, generation and association relationships among the entities; filling the identified entities and relationships into the knowledge graph model to construct a knowledge graph, and optimizing the constructed knowledge graph; based on an input test item of a to-be-tested item, recommending a most relevant test case entity and a relevant test process and question list information thereof in the constructed and optimized knowledge graph; and inputting the recommended test case, test process and question list information into the large model to generate a structured test case text conforming to a project language style and a test environment. The invention aims to solve the problems of insufficient structuralization, weak reasoning ability and poor dynamic adaptability of the existing test case generation.

The invention provides a roadway surrounding rock stability judgment method and a classified supporting method, and relates to the technical field of soil layer or rock drilling and mine safety. The method comprises the following steps: S1, determining roadway surrounding rock stability influence factors; s2, dividing a rock mass strength index, a surrounding rock stress index, a surrounding rock integrity index, a roadway size index, a coal pillar ruler habit index, a water spraying index and the like; s3, determining a roof strength stress coefficient, a roof integrity coefficient and a side loosening coefficient; s4, performing field investigation or testing to obtain a classification index value, and determining an index threshold value through a fuzzy clustering method; s5, determining classification of non-impact roadways and impact dangerous roadways according to the roadway impact dangerousness and the impact danger index; and S6, determining a roadway support mode according to the roadway surrounding rock stability classification. According to the method, more comprehensive influence factors are considered, parameters are more convenient to obtain, values of factors required by field test classification indexes are facilitated, and scientific support of roadway surrounding rocks is achieved.

The invention provides a logging data preprocessing system and a logging data preprocessing method. The logging data preprocessing system comprises a data standardization module, a rock core homing module, a lithology identification module, a mineral composition identification module, a porosity calculation module and a fracturing performance evaluation module. A continental facies shale gas logging comprehensive evaluation technical system is innovatively constructed through the technical means of logging curve standardization processing, core depth homing, multi-parameter lithology identification, nonlinear mineral component fitting, porosity model establishment, rock mechanical brittleness evaluation and the like. According to the method, the well logging interpretation coincidence rate is remarkably increased, shale gas exploration and development are effectively guided, key technical support is provided for well drilling fracturing and gas testing operation of a field test well, and remarkable economic benefits and application value are achieved.

The invention provides arthrobacter HJ1 for preventing and treating fungal root rot of polygonatum sibiricum and application of the arthrobacter HJ1, and belongs to the technical field of disease prevention and treatment. The preservation number of the arthrobacterium HJ1 is CCTCC (China Center For Type Culture Collection) NO: M20251843 The arthrobacter HJ1 has a remarkable inhibition effect on the pathogenic bacterium fusarium oxysporum of the rhizoma polygonati root rot. The arthrobacter HJ1 has a remarkable inhibition effect on the rhizoma polygonati root rot under an in-vitro condition, and can remarkably reduce scab expansion of the rhizoma polygonati root rot caused by fusarium oxysporum. In a field test, by using the arthrobacter HJ1, the morbidity of the rhizoma polygonati root rot can be remarkably reduced, and the control effect on the rhizoma polygonati root rot is improved. A safety test shows that the arthrobacter HJ1 has no adverse effect on the growth of the polygonatum sibiricum and can be safely used for preventing and controlling root rot fungal diseases of the polygonatum sibiricum. The arthrobacter HJ1, as a beneficial biocontrol bacterium for polygonatum sibiricum root rot fungal diseases, is of great significance to healthy and green development of the polygonatum sibiricum industry.

The invention discloses an in-situ detection device and method integrating an electrochemical impedance spectroscopy technology and static sounding, and aims to realize synchronous in-situ detection of macromechanical parameters and microcosmic electrochemical properties of a soil body so as to improve the comprehensiveness and accuracy of geotechnical engineering field test. The device comprises an electrochemical test probe rod, a static sounding annular probe and a test analyzer, and the electrochemical test probe rod is provided with a linearly arranged three-electrode system and is integrally installed through an insulation module; the static sounding annular probe is provided with a plurality of sensors; the test method comprises the steps of connection of the test analyzer and the probe rod, penetration of the probe into the soil body, electrochemical test parameter setting, impedance spectrum acquisition, data fitting analysis and the like. Compared with a traditional drilling collection method, the method has the advantages that the original state of the soil body can be effectively kept, and meanwhile, the stratum structure identification, the moisture distribution prediction and the unfrozen water content analysis are realized in combination with the microscopic information obtained by the electrochemical impedance spectroscopy and the static sounding mechanical indexes, so that the macroscopic and microscopic properties of the soil layer are comprehensively reflected.

The invention relates to the technical field of coal mine hydrogeology and environmental engineering, and discloses a coal mine groundwater flow-water quality coupling simulation method under mining disturbance condition, which comprises the following steps: step 1, mining disturbance area hydrogeology basic data acquisition: field investigation, drilling sampling, field test and long-term monitoring are carried out to obtain mining disturbance area hydrogeology basic data; the method comprises the following steps: acquiring landform, stratum lithology, geological structure, initial hydraulic gradient, porosity, initial permeability, initial pollutant concentration and hydrogeochemical parameters of a research area, and collecting a coal mining scheme, rock stratum movement observation data and fracture development characteristic parameters; according to the method, the dynamic hydrogeological parameter model is constructed, the water flow-water quality coupling control equation is established, numerical solution and accurate calibration are combined, and accurate simulation of the underground water flow field and the water quality migration process under the mining disturbance condition can be achieved.

The application belongs to the technical field of model test equipment, and discloses a model pile calibration tank testing device and a testing method thereof, which comprises a loading frame, a calibration tank, a model pile and an actuator. The calibration tank is placed on the lower side of the loading frame, the inner side of the calibration tank is provided with a top plate, the middle of the upper end of the top plate is connected with the loading frame through a load transmission rod, the actuator is arranged on one end of the upper side of the calibration tank, the model pile is arranged on the side of the actuator, the model pile is driven to move up and down by the actuator, and the bottom of the calibration tank and the top plate are respectively provided with openings corresponding to the model pile. The indoor calibration tank model pile test has good parallel test effect and good consistency with the field test result.

The application discloses a kind of consistency construction and multi-dimensional parameter joint setting method and system of space field of course beacon, it is related to aviation technology field, comprising: constructing the three-dimensional electromagnetic simulation model of course beacon antenna array, the radiation directivity diagram of antenna array and channel field type characteristics are analyzed;Antenna array is installed and checked and precision is reviewed;Determine that the radio frequency performance of full transmission link meets the requirements;According to correct transmission link, adopt the method of phase matching to carry out channel antenna pair phase matching and clearance antenna pair phase matching in turn, so that the phase of the radiation signal of each antenna pair is the same, and the spatial consistency of antenna pair is constructed;Near-field-far-field signal joint test setting is carried out, near-field test data and far-field test data are obtained, channel line, displacement sensitivity and clearance signal are evaluated, combined with simulation model and actual environment, complete multi-dimensional parameter joint setting.The method significantly improves the consistency and excellence of the final combined field pattern of the space field of the course beacon, and reduces the trial-and-error cost and rework times of flight verification.

The invention belongs to the technical field of hydrogen-fired aero-engine outfield tests, and provides a hydrogen energy engine mobile test system and method, and the method comprises the steps: carrying out the replacement through employing replacement gas and hydrogen in sequence before starting; carrying out first unsealing by using replacement gas and carrying out second unsealing by using hydrogen, providing hydrogen for the detected hydrogen energy engine to carry out false start detection, and carrying out false start inspection; starting performance debugging is divided into a plurality of debugging sections, the hydrogen supply amount of each debugging section is adjusted, and the tested hydrogen energy engine is subjected to running-in operation from a slow state until the maximum rotating speed is reached; steady-state performance debugging and acceleration and deceleration performance debugging are carried out under the designed working condition, and shutdown is carried out. According to the system and the method, the reliability and the safety of a hydrogen-fired aero-engine debugging test based on the mobile test bed can be guaranteed, and compared with a traditional aero-engine test system, the system and the method have more pertinence on safety protection and method flow design of hydrogen fuel.

The application discloses a bucket type cultivation method for overcoming continuous cropping obstacles of bamboo shoots. Through the bucket type inoculation, the mycelium is effectively isolated from the miscellaneous bacteria and pathogenic microorganisms in the soil before the mycelium completes the dominant expansion, the mycelium expansion stability is obviously improved, and the mycelium death and yield loss caused by the continuous cropping obstacles are avoided. Field tests show that the yield of the second year can be recovered to more than 90% of the yield of the first year by using the method, and the yield of the second year is less than 10% of the yield of the traditional reseeding mode, and almost no yield is obtained, so the method has good stability and generalizability.

The invention discloses a high-pressure water jet ground breaking depth time history prediction method, and aims to solve the problem that the change of the ground breaking depth along with time cannot be accurately reflected in the prior art. The method comprises the following steps: firstly, obtaining corresponding data of ground breaking depth and time under different conditions through a jet flow ground breaking test, and further performing inversion analysis and constructing a dynamic erosion coefficient function changing along with a dimensionless stress ratio; and then the function is embedded into an ordinary differential equation representing ground breaking dynamics, and a prediction model is established. For a new construction scene, on the premise that jet flow working parameters and soil inherent attributes are known, the model is solved through numerical calculation, and a complete prediction curve that the ground breaking depth develops along with time can be simulated. According to the method, field test requirements can be remarkably reduced, a reliable basis is provided for scheme comparison and selection and parameter optimization in the early stage of construction, and accurate prediction of the ground breaking process is achieved.

The utility model provides a red clay bearing capacity field testing device, which relates to the technical field of bearing capacity testing devices and comprises a box body, a leading-in device arranged on the back of the box body, a balance plate arranged at the bottom of the box body, supporting legs arranged at the bottom of the balance plate, universal wheels arranged at the bottoms of the supporting legs and a box door arranged on the front of the box body. A hydraulic servo system is arranged at the top end of the interior of the box body, a shaping mold is arranged at the bottom of the hydraulic servo system, an electric injection system is arranged on the front face of the shaping mold, a buttress is arranged at the bottom of the electric injection system, and a material receiving box is arranged at the bottom of the buttress. The guiding-in device can guide red clay to the shaping mold through the guiding-in channel, then the red clay enters the box body, the cold air system is arranged in the box body, and the red clay can be tested after standing for a moment after entering the box body, so that the time for testing after waiting for shaping of a shaping machine or manual shaping is shortened, and the testing efficiency is improved.

The invention relates to the field of spectrum external field testing, and discloses a rocket engine fuel gas measuring device which comprises a support and a hollow probe assembly installed on the support. In order to solve the problems of high-temperature and high-pressure impact and thermal ablation of the tail flame of the rocket, the support and the probe assembly are both designed to be of a wedge-shaped structure, internal circulating water paths are arranged on the support and the probe assembly for forced cooling, the probe assembly is of a U-shaped structure, and an optical measurement light path is arranged in the probe assembly. According to the optical measurement light path, gas parameters are measured through a light refraction principle by using a lighting tube, a prism and a collimating lens connector which are inserted into a probe, so that a measurement component is far away from a high-temperature area. According to the invention, the wedge-shaped structure, active water cooling and high-temperature-resistant materials are combined, so that the effects of good cooling performance, stable structure and ablation resistance are realized, and the measurement precision in a harsh environment can be ensured.

The invention relates to the technical field of road intelligent drainage, and discloses a pavement drainage structure optimization method and system based on hydrodynamic simulation, and the method comprises the steps: constructing a pavement refined three-dimensional digital model through the oblique photography of an unmanned aerial vehicle; historical rainfall data are obtained to generate rainfall boundary conditions, a two-dimensional shallow water wave equation is adopted to perform hydrodynamic simulation to obtain drainage performance indexes, a neural network agent model and an improved genetic algorithm are adopted to perform multi-objective optimization to obtain a drainage structure parameter scheme, and a field test is adopted to perform parameter calibration. And the effect is verified through engineering implementation and online monitoring. According to the method, refined optimization design of pavement drainage structure parameters can be realized, and the drainage performance of road engineering is improved.

The invention provides a mechanical obstacle removing method and system for a shield crossing section steel joint underground diaphragm wall. The method comprises the following steps: firstly, determining a wall section to be subjected to obstacle removing and a section steel joint in a shield crossing range; then, a vertical drill hole is formed in the position, away from one side of the foundation pit, of the underground diaphragm wall, an all-casing full-slewing drilling machine is adopted for conducting segmented drilling on wall concrete and profile steel joints in the wall concrete, segmented cutting and taking out are conducted, and the vertical obstacle removing hole is backfilled; a horizontal or nearly horizontal drill hole is formed in the position, close to one side of the foundation pit, of the underground diaphragm wall, a horizontal diamond drilling machine is adopted for cutting and taking out the profile steel connector within the range of the shield tunnel portal, and a horizontal obstacle removing hole is blocked or backfilled; and finally, shield tunneling machine crossing construction is implemented. According to the method, the obstacle removing target is clear, side-by-side mechanical obstacle removing of the underground diaphragm wall with the section steel joints can be achieved under the conditions that a large-diameter obstacle removing well is not constructed and underground excavation manual obstacle removing is not carried out, and the method is verified through indoor and field tests and is suitable for being used in subway station crossing projects with limited fields.

The application discloses a method for improving the recovery ratio of low-permeability oil reservoirs by using microbial composite pressure flooding, and comprises the following steps: S1, test block screening; S2, microbial system screening and performance evaluation; S3, pressure flooding injection process optimization; and S4, field application. The application is suitable for the technical field of oil reservoir development, and the recovery ratio of low-permeability oil reservoirs can be effectively improved by using the microbial composite pressure flooding mode. The injected microbial system can reduce the viscosity of crude oil, reduce the injection pressure, increase the injection amount, and reduce the oil-water interfacial tension. The pressure flooding injection mode can not only rapidly supplement the formation energy, but also form micro cracks and expand the sweep range of the microorganisms. The injected microbial system is non-toxic and harmless, has no influence on the subsequent sewage treatment, and can avoid the problem of environmental pollution caused by the injection of chemical reagents. The application has the advantages of simple construction process, simple operation, high input-output ratio, and good field test effect.

The present application relates to coal mining technical field, provide a kind of method for determining the effective influence radius of hydraulic fracturing, comprising the following steps: S1, drilling fracturing borehole in target rock formation;S2, respectively drilling first observation borehole and second observation borehole on the two sides of the fracturing borehole, the interval D1 between the first observation borehole and the fracturing borehole is less than the interval D2 between the second observation borehole and the fracturing borehole;S3, the original water quantity of the first observation borehole and the second observation borehole is determined, then the fracturing borehole is subjected to hydraulic fracturing;S4, according to the water quantity change of the first observation borehole and the second observation borehole, determine the effective influence radius R of hydraulic fracturing.The method greatly reduces the initial workload and material cost of drilling construction, hole sealing and instrument installation, so that the field test work can be quickly started and completed, and the time for determining the radius of hydraulic fracturing is greatly reduced.

The invention discloses a solid propellant high-pressure combustion flow field testing device and method based on a particle image velocity measurement technology. The solid propellant high-pressure combustion flow field testing device comprises a visual high-pressure combustion chamber, a solid propellant placement platform, an ignition system, a smoke purging and filtering system, a double-frame high-frequency shooting system and a high-frequency laser system. AlO particles generated by combustion of a solid propellant are used as tracer particles, so that the problem that the tracer particles are difficult to accurately inject in a combustion flow field in a high-pressure environment is solved; strong background radiation caused by combustion of the solid propellant is filtered through a narrow-band filter, and a movement track image of the tracer particles is obtained; by using the smoke purging and filtering system, the removal of AlOparticles during combustion of the solid propellant is realized, and the influence on the observation view and the sheet light source is avoided. The device is convenient to adjust, good in repeatability, low in manufacturing cost and convenient to disassemble and maintain, has high engineering applicability and experiment reliability, and can be suitable for any aluminum-containing solid propellant high-pressure combustion flow field testing experiment.

The invention provides a hydraulic performance testing system and method for a three-layer axial-flow stirrer, and belongs to the technical field of three-layer axial-flow stirrers. The system comprises a power monitoring module which collects output torque of a stirrer, motor input power and rotating speed of a stirring shaft; the flow field test module analyzes and tests flow field speed distribution; the data processing unit constructs a hydraulic performance evaluation model, extracts hydraulic performance characteristics as input, and outputs hydraulic performance grades; the multi-objective optimization analysis module establishes a multi-objective optimization model and solves the multi-objective optimization model to obtain an optimal parameter combination; and the control output module converts the optimal parameter combination into a control instruction and adjusts the control instruction. According to the invention, by constructing a closed-loop integrated test process, the accuracy of test data and the reliability of performance evaluation are improved. The stirring efficiency, the energy consumption and the flow field uniformity are considered by adopting multi-objective optimization logic, so that the hydraulic performance is stable and reaches the standard, the energy consumption is reduced, the requirements of multiple scenes are met, and a practical technical support is provided for optimization of stirring equipment.

The utility model provides a maglev train air spring control unit (LST) test device comprising an air source used for supplying air to a tested LST; the adaptive plate is used for installing a tested LST, and the adaptive plate is communicated with or cut off from an air source through an air inlet ball valve; the gas storage tank is communicated with the output end of the tested LST on the adapter plate; the control box is used for controlling the tested LST and collecting pressure signals of the tested LST, and the control box further controls opening and closing of the air inlet ball valve; the first pressure measuring device is connected to the air source; and the second pressure measuring device is connected to the gas storage tank and is used for detecting the pressure change of the gas storage tank. Through the independent air source, the adaptive plate, the control box and the pressure measuring device, the LST testing device can be separated from a train to independently test the LST, so that the inconvenience of train field testing is avoided, and the testing efficiency and flexibility are improved.