51results about How to "Accurately established" patented technology

The invention relates to the technical field of steel bridge deck system disease detection, in particular to a steel bridge deck system disease detection method and system and a construction method of the steel bridge deck system disease detection method and system. Attributes of a steel bridge deck system entity are mapped into a digital twinborn model of a virtual space by using a digital means, so that steel bridge deck system disease data are analyzed more comprehensively; the virtual service state analysis of the current steel bridge deck system entity and the prediction of the formation and development degree of the steel bridge deck system diseases are realized through the Internet of Things technology and big data processing. In the process of predicting the formation and development degrees of steel bridge deck system diseases, steel bridge deck system entity monitoring data are updated in a digital twinborn model and a steel bridge deck system twinborn database in real time by using the Internet of Things technology, so that accurate establishment of the digital twinborn model and accurate mapping of total data are realized; meanwhile, the virtual test model accurately simulates the service state of the steel bridge deck system, and it is ensured that the steel bridge deck system disease development model has credibility and reference in predicting the formation and development degree of the steel bridge deck system diseases.

The invention relates to the technical field of database establishment, in particular to an establishment method and system based on an aircraft aerodynamic model database. The method comprises the following steps: obtaining an aircraft pneumatic data storage demand and an aircraft pneumatic data query demand, and carrying out multi-level storage architecture design to obtain a basic data layer, a processing data layer and a high-level model data layer; the method comprises the following steps: collecting aircraft original aerodynamic data sets of wind tunnel experiments, flight tests and CFD numerical simulation, and transmitting and storing the aircraft original aerodynamic data sets to a basic data layer; carrying out aerodynamic load, flow field parameter and aerodynamic pressure distribution analysis on the original aerodynamic data set of the aircraft in the basic data layer, and transmitting and storing the aerodynamic load, flow field parameter and aerodynamic pressure distribution to the processing data layer; and carrying out aircraft aerodynamic model construction on the data in the processing data layer, transmitting and storing the data to a high-level model data layer, and carrying out R-tree multi-dimensional index connection to obtain an aircraft aerodynamic model multi-level storage database. According to the invention, an efficient and intelligent aerodynamic model database can be established.

The invention provides a conveying system and a medical instrument. The delivery system includes a handle body, a branch channel establishment assembly, and a bundle diameter adjustment assembly. And the bending degree of the deformable part in the second state is greater than that of the deformable part in the first state. The compression degree of the intravascular stent in the fourth state is smaller than that of the intravascular stent in the third state. The deformable part can move in the axial direction of the handle body so that the far end of the deformable part can move to the open window of the intravascular stent, and the deformable part in the second state can stretch out of the open window. According to the intravascular stent, the branch channel establishing assembly and the beam diameter adjusting assembly are matched with each other, when the intravascular stent is in the fourth state, the deformable part in the second state extends out of the open window, and the branch channel is accurately established, so that the accuracy of the branch channel is improved, and the treatment effect is improved.

The invention discloses a dynamic digital twinborn modeling method applied to energy efficiency optimization of a ground source heat pump, and belongs to the technical field of digital modeling, and the method comprises the steps: obtaining a CAD drawing of ground source heat pump equipment installed in a target area, and constructing a ground source heat pump simulation model based on the CAD drawing; real-time operation data and equipment state parameters corresponding to the ground source heat pump equipment and environment data corresponding to the target area are received based on the Internet of Things technology, and the ground source heat pump simulation model is driven based on the real-time operation data to generate a digital twinborn model; generating real-time monitoring data, updating the digital twinborn model based on the real-time monitoring data, and generating a dynamic digital twinborn model; and the dynamic digital twin model outputs a performance prediction result of the ground source heat pump equipment, and a multi-objective optimization algorithm dynamically adjusts equipment state parameters based on the performance prediction result to complete energy efficiency optimization of the ground source heat pump equipment. According to the invention, the precision and practicability of the dynamic digital twin model can be improved.

The invention relates to a method for rapidly calculating the RCS of a coated unmanned aerial vehicle under a complex background, and belongs to the field of stealth target electromagnetic scattering calculation. Comprising the following steps: determining reflection coefficients of a single-layer wave-absorbing material with a PEC substrate at different incident angles according to an equivalent transmission line theory; calculating induced current generated by incident electromagnetic waves on the surface of the target coated with the single-layer wave-absorbing material according to the reflection coefficient; based on the induced current, utilizing physical optics and physical diffraction theories to calculate scattered fields of all the illuminated surface elements, and superposing all the calculated scattered fields; the scattering field of each surface element on the sea surface model at a fixed angle is obtained through vector superposition of the scattering fields obtained through an EPO'field and a TSM; and finally, superposing all the scattered fields, and calculating the total field RCS of the complex sea background and unmanned aerial vehicle composite model based on the superposed total scattered field. According to the method, the RCS of the coating unmanned aerial vehicle under the complex background can be quickly calculated.

The invention discloses a surgical robot master-slave mapping reconstruction method, device and equipment and a medium, and the method comprises the steps: obtaining a historical mechanical arm joint angle and a historical surgical instrument joint angle in response to a surgical instrument replacement operation, and determining a to-be-selected mechanical arm compensation angle corresponding to a mechanical arm; the safety angle range of the mechanical arm is determined, and posture compensation is conducted on the mechanical arm based on the to-be-selected mechanical arm compensation angle and the safety angle range; zeroing operation is conducted on the replaced current surgical instrument hung on the tail end joint of the mechanical arm, an instrument rotation joint moves to a memory angle after zeroing, and the current surgical instrument joint angle is determined; and based on the current mechanical arm joint angle and the current surgical instrument joint angle, master-slave mapping between the master manipulator and the slave manipulator is established. According to the technical scheme, master-slave mapping reconstruction of the surgical robot is achieved, the posture of a master manipulator and the posture of a surgical instrument do not need to be changed, and the surgical safety of a patient is improved.

The invention belongs to the technical field of edible oil production quality detection, and particularly relates to a rapid detection method and system for sesame oil quality evaluation. A sampling data preprocessing mode in combination with dielectric constant data of sesame oil samples is provided in a spectral data sampling stage, so that sampling data errors are reduced, and a data foundation is laid for subsequent accurate evaluation of sesame oil quality; meanwhile, when the standard relational expression is established, firstly, eight standard points for establishing the standard relational expression are obtained through solution preparation, then one standard point is abandoned for the eight standard points to establish an initial standard relational expression, and different numbers of standard points are generated by considering the concentration difference value obtained through calculation of the abandoned points and the standard relational expression; in this way, the influence of inaccurate standard points is weakened, and then the standard relational expression is established according to all the standard points, so that the standard relational expression is established more accurately.

The invention belongs to the field of digital engraving, and particularly relates to a method for establishing a spatial relationship between an array clamping system and an engraving system, which comprises the following steps of: adjusting the geometric accuracy of each axis of the engraving system to be within a required range; adjusting the geometric accuracy of each shaft in the array clamping system; setting a zero point position of the array clamping system; fitting the X-axis direction and the Y-axis direction of the engraving system; preparing a measuring tool; constructing a coordinate system in the array clamping system; the initial position of each lifting column in the first row is controlled; the initial positions of the second row of lifting columns and other lifting columns are controlled; preparing a scribing tool and a scribing observation tool; determining X, Y and Z zero coordinates of a coordinate system of the engraving system; the spatial relationship between the array clamping system (2) and the engraving system (1) is established; according to the method, the spatial relationship between the array clamping system and the engraving system can be quickly established, the workload of technicians and operators is reduced, the precision of skin engraving machining is improved, and the machining cost is saved.

The invention provides a satellite-ground laser communication broken link reconstruction method and device based on downlink light spot miss distance, and the method comprises the steps: controlling a ground station to start a coarse tracking closed-loop process when a downlink signal light spot appears in a coarse tracking view field; determining the light spot miss distance of the downlink signal light spot, correcting the servo direction based on the light spot miss distance, and recording the light spot miss distance; when the downlink signal light spot in the coarse tracking view field disappears, closing a coarse tracking closed loop; on the basis of the recorded light spot miss distance, predicting the predicted correction of servo pointing at each moment after the downlink signal light spot disappears; based on the predicted correction amount of each moment, correcting the servo direction to obtain a predicted correction direction of each moment of the servo; when the downlink signal light spot appears in the coarse tracking view field, searching a prediction correction direction corresponding to the moment when the downlink signal light spot appears; and on the basis of the corresponding prediction correction direction, a coarse tracking closed loop is opened to reconstruct the satellite-ground laser communication link, so that rapid link reconstruction is realized, and the relink efficiency is improved.

The invention discloses a virtual training live-action three-dimensional model generation system and method based on digital twinning. The system comprises a data acquisition module, a digital twinning model establishment module, a live-action three-dimensional model establishment module, a model fusion module, a display module, a preliminary use module, a feedback suggestion module, a model optimization module and a model export module. The data acquisition module is used for collecting physical entity data related to a training scene, namely entity physical data; the digital twinborn model building module is used for building a digital twinborn model of a physical entity in a virtual space by utilizing the collected entity physical data; and the live-action three-dimensional model establishing module is used for establishing a three-dimensional model of a real scene by utilizing a live-action three-dimensional technology, namely obtaining a live-action three-dimensional model. According to the invention, the live-action three-dimensional model with higher accuracy can be generated, so that the training effect is better improved.

The invention relates to a shopping center shop recommendation method and device, equipment and a medium, and the method comprises the steps: predicting interested shops of a target old user in a current time period through employing a long and short-term memory network model trained by user behavior time sequence data, adopting a preset collaborative filtering algorithm to calculate and determine a second similarity between the target old user and other users according to the interested shops of the target old user in the current time period, so as to determine neighbor users of the target old user; predicting an estimated score value of a target old user for an unscored shop according to the score value of the neighbor user for each shop, and calculating and determining a second recommendation degree corresponding to each shop according to the estimated score value, the actual distance between the target old user and the shop and the comprehensive recommendation value, and displaying each shop to a user interface of the target old user according to the second recommendation degree from high to low so as to complete shop recommendation of the shopping center. According to the invention, the traffic and user stickiness of a shopping center can be improved.

The invention provides an output voltage determination method and device, electronic equipment and a storage medium, and relates to the technical field of laser, and the method comprises the steps: transmitting a plurality of emission laser pulse signals to a target object, each emission laser pulse signal in the plurality of emission laser pulse signals being generated according to different output voltages; receiving a plurality of reflected laser pulse signals reflected by the target object; processing the plurality of reflected laser pulse signals to obtain a target pulse signal; determining a target distance value corresponding to the target pulse peak value according to the target pulse signal; and determining a target output voltage corresponding to the target distance value according to a preset corresponding relation. By implementing the technical scheme provided by the invention, the effect of improving the determination efficiency of the output voltage is achieved.

A noise data artificial intelligence learning method for identifying the source of problem noise may include a noise data preprocessing method for identifying the source of problem noise, the method comprising: selecting a unit frame of problem noise from noise sampled over time; dividing the unit frame into N segments; analyzing the frequency characteristics of each of the N segments, and extracting the frequency components of each segment through a logarithmic Mel filter; and outputting feature parameters as a representative frame by averaging information of the N segments, wherein artificial intelligence learning is performed by applying a bidirectional RNN based on the feature parameters extracted according to time changes according to the noise data preprocessing method.

The present application belongs to the technical field of oil and gas field exploration and development, and discloses a method, device and method for establishing a strike-slip fault activity prediction model. The method for establishing the prediction model comprises: extracting the horizontal maximum principal stress, the minimum horizontal principal stress and the vertical stress in a present-day stress model based on a fracture-vug three-dimensional carving model; calculating a normal stress model and a shear stress model from the horizontal maximum principal stress, the minimum horizontal principal stress and the vertical stress; calculating a criterion internal friction angle model from the normal stress model, the shear stress model and a roughness model; and subtracting the data in the criterion internal friction angle model from the data in the shear stress model to obtain the strike-slip fault activity prediction model. The present application can more accurately establish a complex strike-slip fault activity prediction model that meets the needs of exploration and development production.

The present invention provides a radio frequency filter switching device, system and method, the device comprising: a first end of a first module is connected to a sine wave signal source, a second end of the first module is connected to a first end of a first power divider; a first end of a second module is connected to a second end of the first power divider, a second end of the second module is connected to a modulated signal source; a first end of the second power divider is connected to a first end of a third module, a second end of the second power divider is connected to a spectrum analyzer, a third end of the second power divider is connected to a second end of the third module; a first end of a third power divider is connected to a first end of a third module, a second end of the third power divider is connected to a third end of the first power divider, a third end of the third power divider is connected to a second end of the third module; a third end of the third module is connected to a base station simulator, and a fourth end of the third module is connected to a device under test. The present invention has high testing efficiency and accuracy.

This application relates to a method, apparatus, and measurement system for dynamic measurement of assembly data. The measurement system includes a moving crossbeam and multiple calibration targets, with a 3D scanner and a laser tracker mounted on the moving crossbeam. The method includes: controlling the moving crossbeam to move to a measurement pose; positioning multiple calibration targets using the laser tracker to construct a geodetic coordinate system and tracking and determining the real-time pose of the 3D scanner in the geodetic coordinate system; controlling the 3D scanner to move and scan to obtain reference point cloud data and key area point cloud data of the assembly workpiece, and establishing the point cloud correlation between the two, establishing a workpiece coordinate system based on the reference point cloud data; based on the workpiece coordinate system, real-time pose, and point cloud correlation, mapping the key area point cloud data to the geodetic coordinate system and performing error correction; and generating an assembly deviation map based on the deviation between the corrected actual measurement data and the expected measurement data. This method can improve the cycle time efficiency and assembly accuracy pass rate of a pulsed assembly production line.

The present invention belongs to the technical field of welding materials and is a method for predicting the stress corrosion sensitivity of the welded joints between tubes and tube sheets of shell and tube heat exchangers. The influence of cracks on the redistribution of welding residual stress is taken into account, and the degree of agreement between the finite element simulation results of the stress distribution of the heat exchanger tube head and the actual component stress distribution is improved, thereby accurately obtaining the influence of crack defects on the stress concentration of the tube head. Through corrosion tests on different areas of the welded joints between tubes and tube sheets, the electrochemical corrosion parameters of different areas are obtained. Advantages: Based on the thermodynamic and electrochemical theories of materials, the stress corrosion sensitivity of the welded joints between tubes and tube sheets is predicted, and the stress corrosion sensitivity of different parts is obtained, which has important theoretical guiding significance and engineering application value for ensuring the safe operation of the heat exchanger tube heads.

The invention provides a coupling resonance analysis method for transmitting supercritical high-speed pulsating flow by an aircraft flow transmission pipe under forced excitation, and belongs to the field of aircraft dynamics. According to the method, a coupling resonance model, induced by the supercritical pulsating flow, of the aircraft fluid conveying pipe is established based on a structural model of the aircraft fluid conveying pipe, and the perturbation-increment harmonic balance method for bifurcation analysis is established for the first time according to the strong nonlinear coupling resonance behavior of the aircraft fluid conveying pipe. Furthermore, an amplitude-frequency bifurcation relationship under a certain excitation amplitude is solved by adopting a numerical iteration method, and the stability is evaluated by utilizing a Floquet theory. And finally, constructing a database of excitation parameters, material parameters and coupling resonance characteristics of the airplane fluid conveying pipe. According to the method, the coupling resonance characteristic of the airplane fluid conveying pipe during transmission of the supercritical high-speed pulsating flow under forced excitation can be effectively analyzed, and a reliable analysis method and technical support are provided for design and safe operation of the airplane fluid conveying pipe.

The present invention discloses a full-power variable-speed pumped storage control method, device and system considering electrical losses, belonging to the technical field of pumped storage control, the control method comprising: using each electrical efficiency characteristic curve to correct the hydraulic efficiency characteristic curve under the same operating condition, to obtain the target efficiency characteristic curve under each operating condition; recording the speed corresponding to the highest efficiency point in each target efficiency characteristic curve as the optimal speed, to obtain an optimal speed lookup table recording the optimal speed under each operating condition; finding the corresponding current optimal speed from the optimal speed lookup table according to the current operating condition, so as to perform machine-side control and water-side control. The present invention uses the optimal speed lookup table that takes into account the electrical efficiency in the electric energy conversion process to perform full-power variable-speed pumped storage control, which can make the entire full-power variable-speed pumped storage system operate at the true highest efficiency point, thereby improving the overall operating efficiency of the system.

A method for constructing a slow microcyclic artificial cell niche. A cell niche (62) which is isolated from a flow field is provided in the center of the flow field and the cell niche (62) is in communication with the flow field by means of an opening (61), wherein the opening (61) faces a wake (63) formed by means of the flow field flowing around the cell niche (62).

This invention discloses a method for constructing a digital model of a high-energy beam pre-controlled projectile with random defects. The method includes: establishing a model of the high-energy beam pre-controlled projectile using TrueGrid software; outputting the node and element information of the mesh according to the format requirements of the finite element software; extracting node and element data from the mesh model file, dividing the element data into base element data and pre-controlled zone element data; obtaining element data of the defect-forming locations and the remaining element data in the pre-controlled zone according to a pre-defined ratio of defect formation locations and their volume in the pre-controlled zone; randomly deleting element data from the defect-forming locations; and merging the data to form a mesh model file that meets the requirements, thus obtaining the element data of the high-energy beam pre-controlled projectile with random defects. This construction method can generate controllable random defects in the pre-controlled zone, completing the defect characterization of the high-energy beam pre-controlled projectile.

The application provides a communication channel establishment method and device, a storage medium and an electronic device, and relates to the technical field of communication. The method comprises the following steps: receiving an access request sent by a device to be accessed; wherein the access request comprises identity information of the device to be accessed and transmission data frame length information of the device to be accessed; verifying the identity information; after the identity information is verified, modifying a data frame length parameter in an existing communication interface program based on the transmission data frame length information to obtain a modified data frame length parameter; and establishing a communication channel between the device to be accessed based on the modified data frame length parameter. The technical scheme provided by the application can automatically and accurately establish a communication channel between communication devices without manually modifying a communication interface program, thereby improving communication efficiency.

The invention discloses a household electricity consumption power load prediction and electricity saving method based on classification regression mapping. The method comprises the following steps: carrying out data processing on household electricity consumption by adopting an improved quartile method; establishing an improved short-time load prediction model according to the processed household power consumption data; establishing a constraint formula based on power flow design according to the short-time load prediction model; and according to the constraint formula, establishing an objective function of the household electricity consumption power load. According to the invention, the improved quartile distance method based on outlier detection is adopted to carry out data processing on household power utilization, and a power load prediction model of household power utilization is established more accurately. The feedforward neural network is generated by an automatic self-organization process through data representation formed by an automatic encoder, and the short-time load prediction efficiency can be greatly improved. A plurality of power constraints are incorporated into the constraint formula based on the power flow design, and it can be directly considered that the solving process meets all limiting conditions, so that the solving quality and accuracy are improved.

This application discloses a method, system, device, and medium for acquiring information from power equipment, belonging to the field of power electronics technology. The method includes: power equipment responding to a connection request from a pre-installed device by establishing a communication connection with the pre-installed device via an AP hotspot; receiving an inquiry command sent by the pre-installed device; obtaining the response information corresponding to the inquiry command; and sending the response information back to the pre-installed device. This application, by activating the AP hotspot of the WiFi module after the power equipment is powered on, allows the pre-installed device to establish a communication connection with the power equipment via the AP hotspot, obtain the corresponding response information based on the network relationship within the power equipment cluster, and provide feedback. This eliminates the need for manual scanning of QR codes or manual data entry for each power equipment, simplifying the power equipment information collection process, shortening the information acquisition time cycle, and improving the efficiency of power equipment information acquisition.

The embodiment of the application provides a data transmission system and method between mobile devices, and relates to the technical field of data transmission. The system comprises a quantum key distribution link calibration subsystem and a quantum key distribution subsystem; wherein the quantum key distribution link calibration subsystem is located at a sending end, and is used for automatically completing optical axis calibration at the initial stage of optical link establishment, preparing a low-noise quantum channel for the quantum key distribution subsystem, and comprising: an optical axis alignment module, which is used for realizing accurate alignment of the direction of the sending end emission optical axis and the receiving end receiving optical axis; and a system performance verification module, which is used for monitoring the quantum error rate of the link, and determining that the link calibration is successful when the error rate is reduced to below the threshold value specified in the security protocol. The embodiment provided by the application improves the data transmission security between mobile devices.

The invention discloses a modeling method and system for a magnetic suspension phase change cooling system of a data center, and relates to the technical field of cooling system modeling, and the method comprises the following steps: obtaining basic parameter data of the magnetic suspension phase change cooling system, and marking the basic parameter data as cooling system parameter information; monitoring the operation state of the magnetic suspension phase change cooling system to obtain state information of the cooling system; based on the cooling system parameter information and the cooling system state information, establishing a mathematical model of the magnetic suspension phase change cooling system, and obtaining a cooling system mathematical model after completion; establishing a simulation model of the cooling system based on the cooling system parameter information, the cooling system mathematical model and the cooling system state information; the method is used for solving the problems that an existing cooling system modeling technology only pays attention to the internal operation process of the cooling system, the modeling process is too complex and lengthy, and an accurate mathematical model for describing the cooling system cannot be rapidly established.

This invention discloses a dynamic modeling method for a three-orthogonal magnetic reluctance translational magnetic bearing. Based on the equivalent magnetic circuit method, magnetic circuit analysis is performed. Utilizing Ohm's law for magnetic circuits, a single-pole electromagnetic force model of the three-orthogonal magnetic bearing is obtained. Using the lateral edge of a right-angled regular triangular pyramid as a reference, the magnetic bearing's three magnetic poles are evenly distributed circumferentially to construct an orthogonal model magnetic circuit. By analyzing the geometric characteristics of the three-orthogonal magnetic bearing, a coordinate transformation matrix (direction cosine matrix) for the electromagnetic force coordinate system and the position coordinate system is constructed. When the magnetically levitated mover is subjected to external disturbance, the current flowing through the magnetic bearing coil winding is changed according to the change in mover displacement, thereby achieving mover control. The dynamic modeling method for the three-orthogonal magnetic reluctance translational magnetic bearing described in this invention can realize three-degree-of-freedom translation and preset position levitation of the platform on which the magnetic bearing is mounted, and has broad application prospects in the field of attitude control technology for novel spacecraft.

The application provides a WGAN-based FRP sheet and concrete interface bonding slip model generation method, which can automatically, quickly and accurately obtain the bonding slip model and has a wide application prospect. After the automatic and rapid acquisition of the bonding slip model, the bonding performance between the FRP sheet and the concrete can be accurately reflected, and a safe and reliable reinforcement component design calculation method can be established. The WGAN is used to predict the strain, so that the training process can be simplified and the training can be stable. The WGAN can replace the traditional experimental analysis to quickly and accurately establish a bonding strength model. The LSTM is used as the generator of the WGAN model, so that the gradient disappearance and explosion problems of the RNN are solved, and the strain data related to time can be more accurately predicted. The CNN is used as the discriminator of the WGAN model, so that the quality and convergence speed of the generated samples are improved.

The invention relates to the technical field of geophysical exploration, in particular to an open space well complex geology refined modeling method. The invention provides a brand-new open space well complex geology refined modeling method in a tunnel exploration stage. A point set can be effectively optimized by interpolation according to the perimeter proportion based on the W configuration, the problem of sparsity and winding distribution discretization is solved, meanwhile, the winding difference of adjacent profile contour feature points is remarkably weakened, and a foundation is laid for enhancing the constraint of the feature point set on the profile shape and reconstructing the similarity between triangles in a triangulation network. The three-dimensional physical property model and the geological anomaly model of the research area can be efficiently and accurately established, the crushing and water-rich anomaly interpretation of the area is realized, and data reference is provided for unfavorable geology advanced prediction and tunnel safety construction.

The present invention belongs to the technical field of asteroid modeling, and in particular, relates to a full-process system and method for random asteroid morphology modeling and output. The system includes a morphology modeling module and a model output module. The morphology modeling module is used to simulate a random asteroid matrix through a gridded random shape model, control the surface control points of the random asteroid matrix to offset relative to the surface, customize the number and size of different landforms generated, add craters, hills and stones in turn, and simulate irregular undulating landforms through noise functions to obtain a random asteroid model; the model output module is used to view the operation results and model files of each step of the morphology modeling module in a static and dynamic three-dimensional visualization manner, and is also used to print a random asteroid model through a 3D printing device. The present invention can quickly and accurately establish an asteroid morphology model, and output visualization effects and physical objects, thereby improving modeling efficiency and supporting scientific research needs and popular science education in related fields.