15results about How to "Accurately established" patented technology

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 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.

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 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.

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.

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.

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 present application relates to the field of automatic driving strategy evolution, and in particular to an end-to-end automatic driving strategy evolution method based on supervised-reinforcement joint fine-tuning, wherein the data samples of the user using the automatic driving system are divided into performance defect samples, physiological and psychological feedback samples, partial intervention samples and complete takeover samples according to feedback levels, the end-to-end automatic driving strategy evolution is realized by using a reinforcement learning fine-tuning method for the performance defect samples and the physiological and psychological feedback samples, the end-to-end automatic driving strategy evolution is realized by using a supervised learning fine-tuning method for the partial intervention samples and the complete takeover samples, a dynamic sample library is established, the memory samples are dynamically updated according to the difference degree of the samples, the memory sample loss is weighted and calculated according to the difference degree between the memory samples and the samples currently used for fine-tuning training, and finally the memory sample loss is used to perform soft constraint on the reinforcement learning fine-tuning and the supervised learning fine-tuning. The present application makes full use of multi-scene data sample flow and can continuously learn.

The application relates to the technical field of intelligent facility management, and discloses an intelligent facility management control system based on a 5G Internet of Things, which comprises a facility data acquisition module, a configuration module, a real-time monitoring module, an instruction matching module and an execution module. The facility data acquisition module collects data through a 5G terminal, generates a running characteristic value and a dynamic adjustment threshold parameter; the facility configuration module generates individualized parameters and a dynamic adaptation strategy according to the characteristic value; the real-time monitoring module acquires and screens real-time state data; the instruction matching module compares data to generate a correlation degree and select a target instruction; and the instruction execution module drives facility operation. The system is also provided with a threshold self-optimization module which optimizes threshold parameters through feedback data. The system realizes real-time monitoring, dynamic parameter adjustment, precise instruction matching and self-optimization, and improves the intelligentization, precision and self-adaptation capability of facility management.

This invention provides a method for mine environmental surveying based on unmanned aerial vehicle (UAV) investigation, belonging to the field of mine environmental survey technology. The method involves dividing the mine area and determining UAV routes, using the UAV to acquire mine environmental data and build a 3D model, and further acquiring specific information about the mine environment as it changes. This invention solves the problem that current mine environmental surveys mostly rely on manual investigation, which is time-consuming, labor-intensive, and unsafe, and has the advantage of preventing mine accidents.

The invention relates to the field of material mechanical property testing device development, in particular to a variable ammonia-alcohol-hydrogen environment multi-type corrosion testing device and a variable ammonia-alcohol-hydrogen environment multi-type corrosion testing method.The variable ammonia-alcohol-hydrogen environment multi-type corrosion testing device comprises a first reaction kettle, a second reaction kettle and a third reaction kettle, the second reaction kettle is a constant displacement stress corrosion device, and the third reaction kettle is an electrochemical corrosion test device; the first reaction kettle, the second reaction kettle and the third reaction kettle are respectively connected with a gas distribution device for supplying gas and a tail gas recovery device for recovering tail gas through pipelines; the first reaction kettle, the second reaction kettle and the third reaction kettle are connected with the stepless pressure regulating device through pipelines; and the first reaction kettle, the second reaction kettle and the third reaction kettle are respectively connected with a water bath circulating temperature control device through water jackets. According to the device and the method, actual working conditions can be accurately simulated, and a constant-load tensile stress corrosion test, a constant-displacement stress corrosion test and an electrochemical corrosion test of ammonia-alcohol-hydrogen in different corrosion environments can be synchronously or asynchronously realized.