23results about How to "Verify accuracy" patented technology

A method for constructing a damage constitutive model to analyze the damage evolution of easily argillaceous rocks includes: preparing ore specimens; conducting acoustic emission tests on the ore specimens under uniaxial compression; obtaining the displacement, load, and acoustic emission parameters of each specimen; calculating and analyzing the characteristic stresses of easily argillaceous rocks under uniaxial compression; revealing the evolution characteristics of acoustic emission parameters under uniaxial compression; defining the damage variables at different characteristic stress stages; and constructing a damage constitutive model of the entire stress-strain process of easily argillaceous rocks. This method can accurately and comprehensively quantitatively analyze the strength evolution characteristics of easily argillaceous rocks under uniaxial compression, monitor the damage evolution characteristics and damage degree of easily argillaceous rocks in real time, and provide a reference for maintaining the stability of underground goaf areas in mines.

The application discloses a three-dimensional detection and diagnosis simulation verification method and platform for tunnel apparent diseases and a storage medium. The method comprises the following steps: collecting point cloud data and image data of a tunnel model, performing difference analysis based on the two types of data to obtain an apparent detection result, and positioning a suspicious disease area of the tunnel model according to the apparent detection result. A machine learning model is used to analyze a disease diagnosis result corresponding to the suspicious disease area, and the disease diagnosis result is compared with preset real disease information of the tunnel model, and a comparison result obtained can be used to optimize the machine learning model. The scheme avoids the limitations of real vehicle verification and non-entity verification, and effectively improves the verification effect and verification efficiency of the machine learning model.

The invention discloses an SERS (Surface Enhanced Raman Scattering) flexible sensor based on dual-ion modification as well as a preparation method and application of the SERS flexible sensor, and belongs to the technical field of biomedical detection. A bacterial cellulose membrane (BCM) is used as a base material, cation modification (QBCM) is carried out through glycidyl trimethyl ammonium chloride (EPTMAC), anion modification (TABCM) is carried out through tannic acid (TA), a functional substrate with asymmetric charge distribution and a porous structure is constructed, then Ag NPs are loaded on the modified base material through an in-situ reduction method, the QBCM-coated AgNPs and TABCM-coated AgNPs dual-ion active substrate is formed, and the AgNPs / TABCM-coated AgNPs dual-ion active substrate is used for preparing the composite material. The SERS flexible sensor is integrated through a layer-by-layer self-assembly (LbL) technology; the SERS flexible sensor can realize specific enrichment and synchronous detection of anionic kynurenic acid (KYNA) and cationic spermine (Spm) in urine, and is low in detection limit and good in reproducibility.

The invention discloses an astronomical experimental device for simulating the photometric change of double food stars, and the device comprises a fixing unit which comprises a supporting part located at the lower part, an angle display part disposed at the top end of the supporting part, and a length display part transversely disposed on the angle display part. The limiting component is arranged on the angle display component, and the angle display component and the length display component are connected in series through the limiting component; the limiting unit comprises a fixing part located on the length display part and an adjusting part arranged below the fixing part. The invention provides a device capable of meeting more use requirements, improving the use efficiency of the device, facilitating the smooth proceeding of experimental work, and providing a device capable of recording the luminosity change and simulating the luminosity change conditions of different stages of a food double-star experiment by controlling the movement and the shielding degree of a star, so that the experimental efficiency of the food double-star experiment is improved. And thus, a scientific research scheme in the aspect of eating double stars in astronomy can be better assisted for working personnel.

A reference transfer process method for eccentric part machining relates to the technical field of machining process, comprising: 1, processing initial reference based on first axis; 2, clamping to be processed part to construct initial machining coordinate system; 3, setting auxiliary reference block, so that the auxiliary reference block and the initial machining coordinate system have a determined geometric relationship; 4, processing auxiliary reference plane on the auxiliary reference block, so that the auxiliary reference plane and the preset new machining coordinate system have a determined geometric relationship; 5, rotating the rotary workbench to the corresponding angle, and verifying and correcting the rotation angle by using the auxiliary reference plane; 6, obtaining the new machining coordinate system origin based on the auxiliary reference block, combined with the eccentricity and eccentric angle of the part to be machined; 7, completing the fine machining of the second axis part of the part to be machined based on the new machining coordinate system. The application can solve the technical problems of high machining cost, complicated process and difficult to guarantee precision in the prior art of machining eccentric parts.

The utility model relates to the technical field of battery manufacturing, in particular to a vibration testing device which comprises a vibration testing table, a pressing component, a first fastening component and a positioning component, the vibration testing table is used for placing a to-be-detected object such as a battery pack, the pressing component is used for pressing the to-be-detected object, and the first fastening component is used for fastening the to-be-detected object. The first fastening component is used for fixing the pressing component on the vibration test bench, so that the to-be-detected object is positioned in a first preset direction; the positioning members are connected with the vibration test bench, and at least two opposite sides or at least two opposite vertex angles of the to-be-detected object are provided with the positioning members, so that the to-be-detected object is positioned in a second preset direction and a third preset direction. The battery pack vibration test tool is designed and used for simulating the vibration environment possibly encountered in the transportation process or the actual use process of the battery pack so as to verify the structural stability and the performance reliability of the battery pack, and an important basis is provided for design and improvement of the battery pack.

The embodiment of the invention provides an equipment management method and device, equipment, a storage medium and a program product, relates to the technical field of block chains, and can also be applied to the field of financial science and technology. The method comprises the following steps: receiving encrypted information sent by first communication equipment; wherein the encrypted information is obtained by encrypting the first attribute information and the identifier of the first storage equipment; determining second attribute information of the first warehousing equipment and circulation information of the first warehousing equipment according to the identifier of the first warehousing equipment, a mapping relation between the identifier of the equipment and the attribute information, and a mapping relation between the identifier of the equipment and the circulation information; under the condition that the first attribute information and the second attribute information are the same, performing hash processing on the identifier of the first warehousing equipment, the first attribute information and the circulation information of the first warehousing equipment to obtain a hash value corresponding to the first warehousing equipment; and storing the hash value corresponding to the first warehousing equipment in the block chain. According to the invention, unified management of the information of the first warehousing equipment is realized.

The application relates to a method for verifying an electromechanical transient model of a new energy unit and a control parameter identification method, device and equipment thereof, the method comprising the following steps: acquiring the equipment type of the new energy unit, and acquiring operation data required for electromechanical transient operation according to the equipment type; constructing a measured system for electromechanical transient operation of the new energy unit according to the equipment type, and acquiring first measured data by controlling the measured system to operate according to the operation data; processing the first measured data to obtain sequence component data; acquiring characteristic-related initial data, and constructing a characteristic curve set according to the characteristic-related initial data and the sequence component data of all operation conditions; acquiring the control strategy of the corresponding new energy unit according to the equipment type, and acquiring parameter identification data from the characteristic curve set according to the control strategy; and identifying the parameter identification data by using a least square method to obtain optimal control parameters matched with the first measured data. The method realizes identification of control parameters of model simulation.

The invention discloses a PDC drill bit shaft bottom in-situ rock breaking debris particle size measurement method and system, and relates to the technical field of shaft bottom in-situ rock breaking debris particle size measurement, and the method comprises the steps: constructing a shaft bottom in-situ finite-discrete-infinite element rock model; the in-situ stratum rock at the well bottom is regarded as an infinite boundary, and PDC tooth cutting rock breaking parameter calibration and PDC tooth rock breaking model modeling are carried out; and under the non-bilinear damage criterion, through the interaction of the in-situ finite-discrete-infinite element rock model and the PDC tooth crushing rock model, the in-situ initial rock debris particle size of the well bottom is measured, and the performance of the drilling fluid is adjusted. According to the method, the well bottom in-situ rock debris particle size is measured based on the non-bilinear damage criterion of the typical rock stress-strain curve and the well bottom in-situ finite-discrete-infinite element rock model in a coupling mode, and the reliability and accuracy of well bottom in-situ rock breaking rock debris particle size measurement are improved; and the problem of high calculation cost or sound wave effect of a finite-discrete element model is avoided.

The invention discloses a layered ceramic matrix composite structural strength calculation method considering layering defects, which comprises the following steps of: constructing a ceramic matrix composite three-dimensional finite element model embedded with a zero-thickness cohesion unit in ANSYS finite element software, and combining a progressive damage analysis method; the method can accurately simulate the whole process of damage initiation, evolution and final failure of the ceramic matrix composite material under the load effect, and significantly improves the recognition precision of internal defects (especially layering defects) and the prediction reliability of the structural strength.

The application discloses a network-configuration type SVG optimal configuration method considering transient voltage safety constraints, and comprises the following steps: establishing a low-voltage ride-through equivalent model of a network-configuration type new energy unit and a network-configuration type SVG control equivalent model; quantifying transient overvoltage risks by correcting a node admittance matrix; determining SVG access nodes and capacities by iteration configuration with the constraint that overvoltage does not exceed a preset limit; and establishing a multi-capacity collaborative optimal configuration model with the target of minimizing investment cost. The application can effectively inhibit transient overvoltage, reduce equipment investment cost, and is suitable for engineering planning and optimal configuration of a network-configuration type SVG in a high-proportion new energy station.

The invention is applicable to the technical field of fire scientific experiments, and provides a slit-adjustable and real-time dynamic measurement fire cyclone experiment device which comprises a fire cyclone main frame device, a movable fire cyclone experiment table, an electrical console and a real-time dynamic measurement support system. The fire cyclone main frame device drives movable glass to move along a high-precision linear guide rail through a servo electric cylinder, and dynamic sealing is ensured through an L-shaped metal baffle. The electrical console takes a PLC as a core and has multiple programmable operation modes. The real-time dynamic measurement support system can remotely adjust the spatial position of the sensor, and can be linked with the movable fire cyclone experiment table to realize automatic positioning and resetting. The problems that a traditional device is non-adjustable in slit, single in air inlet mode, poor in sealing performance, inconvenient to operate and the like are solved, and a high-controllability and high-repeatability experiment platform is provided for quantitative research of fire whirlwind.

This disclosure relates to a wheel chock identification method, apparatus, vehicle, and storage medium, relating to the field of autonomous driving. The method includes: determining identification information of a target wheel chock in a first image and storage location information characterizing the location of the target wheel chock, wherein the first image is a frame from an image sequence obtained through image acquisition, and the identification information is obtained by tracking the target wheel chock; acquiring association information indicating the wheel chock identification associated with each storage location; determining whether the identification information of the target wheel chock and the storage location information conform to the association information; and correcting the identification information of the target wheel chock if they do not conform to the association information. Thus, by using the association information between the storage location and the wheel chock as auxiliary information to verify the accuracy of the identification information obtained through initial tracking, and correcting it in a timely manner, the accuracy of wheel chock tracking is improved.

The application discloses a kind of precision calculation method and system of carbon fiber cloth surface acoustic impedance, it is related to the cross field of acoustics engineering and composite material technology, including: obtaining the fiber volume fraction of carbon fiber cloth, warp and weft weaving density, fiber diameter, single layer thickness, layer number, adjacent layer stacking angle, back cavity depth and acoustic angular frequency;According to warp and weft weaving density and fiber volume fraction, anisotropic correction coefficient and equivalent weaving density are calculated;Utilize the anisotropic correction coefficient, equivalent weaving density and other parameters to calculate acoustic resistance;Utilize acoustic angular frequency, fiber volume fraction, single layer thickness, fiber diameter, back cavity depth, layer number and stacking angle to calculate acoustic reactance;Acoustic resistance and acoustic reactance are integrated into the surface acoustic impedance of complex number form.The application can accurately adapt single layer, multi-layer stacking configuration carbon fiber cloth, with small calculation error and high calculation efficiency, and can be widely applied to aerospace acoustic lining, high-end equipment noise reduction and other scenes.

The invention relates to a European standard electric vehicle pile end charging communication controller test system and method, and the system builds a hardware framework for SECC test, can simulate a real charging scene, and provides a hardware basis for the research and development and test of charging equipment. The EVCC simulation board and the EVCC network adapter board are arranged, hardware signals of the EVCC can be simulated and processed, vehicle-pile interaction network communication between SECC and the EVCC can be forwarded to the computer through the EVCC network adapter board, various EVCC network interaction messages are simulated according to test cases through measurement and control software in the computer, the form of automatically executing the test cases is adopted, and the test efficiency is improved. Various charging communication protocols are supported, manual switching and configuration of test conditions are omitted, charging can be automatically completed, test expected result judgment can be automatically carried out, the test efficiency can be improved, and regression testing can be conveniently completed by repeatedly executing test cases.

The application provides a multi-sensor fusion hooking robot operation control method and system, relates to the technical field of traction devices, and comprises the following steps: after triggering a hooking command, controlling a vision sensor and a laser radar to collect scene environment data and reconstruct a static hooking scene; performing scene feature recognition, path fitting of hooking connection, and establishing a target reference path; after executing motion control of the hooking robot, synchronously performing incremental collection of scene data, updating key dynamic information on the static hooking scene; performing path consistency authentication, establishing path following compensation; and after adjusting control parameters, completing hooking connection control of the hooking robot. The application solves the technical problem that the prior art mainly executes hooking and connection operations through a single sensor, the single sensor cannot comprehensively perceive environmental information, thus causing deviation in path planning and action execution, even causing failure or delay, and affecting operation efficiency and safety.

This invention discloses a physiological electrical signal acquisition and verification system, method, and electronic device. The physiological electrical signal acquisition and verification system includes: a human head model, with a first output device inside the human head model for transmitting electroencephalogram (EEG) signals; a signal input module, including a signal generator connected to the first output device, which transmits the EEG signals to the first output device; an electrical stimulation module, including a transcranial electrical stimulation (TCS) device and a second output device for transmitting stimulation electrical signals, the second output device being disposed on the surface or inside the human head model, with the TCS device transmitting the stimulation signals to the second output device; a signal acquisition module for acquiring signals from the human head model; and a signal analysis module, including an analysis device connected to the signal acquisition module for verifying and analyzing the acquired signals. It can verify the accuracy of stimulation artifact processing algorithms based on known EEG signals.

This invention provides a method and system for verifying the accuracy of tidal force estimation. By calculating the tidal force at a given measuring station and the force exerted by the Earth on the station, the total change in gravitational acceleration at that station is calculated and matched with data collected by a gravimeter. Positioning is then performed using a gravitational positioning method. The accuracy of the tidal force calculation is evaluated based on the positioning accuracy, thus verifying the accuracy of the tidal force estimation. Due to error propagation, even small errors in the tidal force calculation will manifest as significant positioning errors in the positioning results. This invention, by verifying the tidal force through the positioning results, can greatly improve the verification accuracy.

The invention provides a multi-channel intelligent acoustic actuation control system and method based on improved LMS filtering, and belongs to the technical field of underwater noise test equipment, and the system comprises an actuation unit, a control unit and a signal processing unit. The actuating unit comprises acceleration sensors and vibration exciters, the multiple vibration exciters are installed in the model and used for simulating mechanical vibration, and the multiple acceleration sensors are arranged nearby the vibration exciters and used for measuring vibration response of the model; the control unit comprises a control computer, a linear power supply module and a signal collector, the control computer is connected with a digital-to-analog converter, and the digital-to-analog converter is connected with a signal conditioner; the signal processing unit comprises an alternating current purification power supply and a power amplifier, and the signal processing unit transmits a collected vibration acceleration signal to the control computer through a signal collector. According to the invention, accurate control and real-time state feedback of the vibration exciter are realized, so that the reliability and accuracy of underwater noise testing are improved.

This invention provides a method and system for evaluating the machining performance of structured grinding wheels used in the grinding of optical components. The method includes: constructing a structured grinding wheel model with multiple groove configurations and an overall geometric model of the grinding system based on the target machining object and machining environment of fused silica optical components; then converting these models into a three-dimensional airflow field simulation model to screen candidate grinding wheel configurations with the highest air barrier weakening strength among the various groove configurations; updating the grinding wheel configurations in the overall geometric model to the candidate configurations; adding a grinding fluid nozzle model to the replaced overall geometric model of the grinding system and converting it into a gas-liquid two-phase flow simulation model; in the gas-liquid two-phase flow simulation model, setting multiple groove size parameters based on the candidate grinding wheel configurations and using a preset grinding fluid injection speed for simulation calculation; selecting the target groove parameter with the largest effective flow rate; and finally, verifying the performance of the grinding wheel with the target groove parameter. This method improves the accuracy of machining performance simulation evaluation.

This invention discloses a feasibility engineering verification method and system for a Sagnac effect time deviation correction model. The method includes the following steps: performing fixed-delay calibration on each device in the optical fiber time transfer system at a preset location to obtain the calibrated devices; acquiring laboratory optical fiber test results and field optical fiber test results respectively; based on the laboratory and field optical fiber test results, obtaining the measured Sagnac time deviation values ​​at each site; acquiring the theoretical Sagnac time deviation values ​​at each site; and comparing the measured Sagnac time deviation values ​​with the theoretical Sagnac time deviation values ​​at the same site to verify the Sagnac effect time deviation correction model. This invention can verify the accuracy of the theoretical model for Sagnac effect time deviation correction in long-distance optical fiber time transfer links.

This invention relates to a method for assessing the operational lifespan loss of a battery energy storage system (BESS) based on the rotating gate algorithm, belonging to the field of power energy storage technology. The technical solution involves: improving the Whale Optimization Algorithm; using the improved Whale Optimization Algorithm to search for the globally optimal gate width of the rotating gate algorithm based on the state-of-charge (SOC) change curve of the battery cells; using the globally optimal gate width again, extracting feature data points from the SOC change curve of the battery cells using the rotating gate algorithm; and using these feature data points to obtain the depth of discharge of each battery cell in each half-cycle, thereby calculating the operational lifespan loss of the BESS. This invention can quickly and accurately assess the operational lifespan loss of a BESS, accelerating the assessment speed and reducing the time required for assessment. It combines accuracy and speed, promoting the better application of BESS in various aspects of the power system, and also providing a reference for BESS investment and control.

This invention relates to a turbine disk verification device and method, addressing the problem that existing technologies struggle to simultaneously simulate centrifugal loads, fluid loads, and high-temperature environments on turbine disks, leading to complex and costly verification devices. The invention provides a turbine disk vibration safety verification device and method, comprising a rotating vibration verification unit, a high-temperature vibration verification unit, and a control unit. The rotating vibration verification unit includes a sealed chamber, a drive device, an airflow disturbance device, and a data acquisition module, used to drive the turbine disk to rotate at room temperature and apply periodic airflow excitation to acquire traveling wave vibration parameters. The high-temperature vibration verification unit includes a heating unit, a vibration unit, a temperature sensor, and an acceleration sensor, used to heat the turbine disk and apply high-frequency vibration excitation to acquire vibration response parameters. The control unit coordinates and controls each module and collects data. This invention comprehensively evaluates turbine disk vibration safety by first measuring traveling waves during rotation at room temperature and then measuring fatigue at high temperature without rotation.