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126results about How to "High engineering application value" patented technology

Photovoltaic power prediction method based on improved empirical mode decomposition and optimized long short-term memory network

PendingCN121863356ARealize global optimizationimprove accuracyGeneration forecast in ac networkPhotovoltaic monitoringOutlier eliminationPredictive methods
The invention discloses a photovoltaic power prediction method based on improved empirical mode decomposition and an optimized long short-term memory network, and the method comprises the steps: firstly carrying out the preprocessing of abnormal value elimination, missing value filling, normalization and the like of photovoltaic power and related meteorological data, and improving the data quality; then, an improved empirical mode decomposition (EE-ANEMD) algorithm is adopted to decompose the preprocessed power sequence into a multi-scale intrinsic mode function component and a residual term, and high-frequency noise, intermediate-frequency fluctuation and a low-frequency trend are effectively separated; global optimization is carried out on the hidden layer unit number, the initial learning rate and the maximum number of training times of the LSTM network through an improved sparrow search algorithm (ISSA), finally, the optimized LSTM is utilized to carry out training prediction on each component, and results are fused and subjected to reverse normalization to obtain a final value. Experiments show that the test set RMSE of the method is reduced compared with that of a single LSTM, the mid-term prediction precision is remarkably improved, and reliable technical support is provided for power system dispatching, new energy consumption planning and photovoltaic power station operation and maintenance.
Owner:HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +3

Multi-scale adaptive gating MambaPlus network construction method and device

ActiveCN122087742AImprove multi-scale feature expression abilityAddressing Underutilized Technology IssuesBiological modelsData setFeature set
This application discloses a method and apparatus for constructing a multi-scale adaptive gating MambaPlus network, belonging to the field of artificial intelligence and machine learning technology. The method includes: initializing the network configuration and constructing the basic structure; preprocessing the input data to generate a standard dataset; mapping the input data to the hidden space via an input mapping layer, and extracting backbone features from the Mamba backbone; constructing at least two parallel scale branches in the hidden space to obtain a multi-scale feature set; inputting the backbone features and multi-scale features into an adaptive gating module, dynamically allocating weights and adaptively fusing them through a hierarchical gating mechanism to generate fused features; further enhancing the features through cross-scale attention and feedforward enhancement, and then superimposing the residuals to generate the final discriminative features; finally, completing category prediction and model training evaluation. This application, while retaining the advantages of Mamba's long-range dependency modeling, addresses the problems of insufficient utilization of multi-scale information, poor adaptive feature fusion, and low robustness in complex scenarios.
Owner:UNIV OF JINAN

Pipeline defect detection method and system

The invention discloses a pipeline defect detection method and system, and belongs to the technical field of pipeline defect detection. The pipeline defect detection method comprises the following steps: acquiring a preprocessed magnetic flux leakage signal and an ultrasonic guided wave signal; performing feature extraction on the signal to obtain a first feature subjected to multi-scale enhancement processing and a second feature subjected to convolution and attention mechanism processing; fusing by adopting a strategy including mutual information calculation and adaptive weight to obtain cross-modal fusion features; and performing multi-task detection and correction based on the fusion features to obtain a detection result indicating the type, the position and the size of the defect. According to the method, the limitation of single-mode detection can be overcome, and the accuracy of defect type identification, the positioning precision and the size quantification reliability are remarkably improved through dynamic weight distribution and physical constraint verification.
Owner:NORTHEASTERN UNIV CHINA

Point cloud stripe noise LTCF elimination method and system for subsidence water area

PendingCN121962625Asolve snapSolve the culling problemThree-dimensional object recognitionFeature extractionPoint cloud
The invention relates to the technical field of three-dimensional point cloud data processing, and provides a subsidence-water-area-oriented point cloud stripe noise LTCF elimination method and system, and the method comprises the steps: obtaining point cloud data, preprocessing, filtering, and optimizing point cloud output. The filtering processing comprises the following steps: local covariance feature extraction: aiming at each target point in the preliminarily optimized point cloud obtained by preprocessing, constructing a k-nearest neighbor domain, and calculating local covariance contribution values of each target point in X, Y and Z spatial directions; compared with the prior art, the method has the following beneficial effects that the industrial pain point of a subsidence water area scene is solved, a three-direction covariance joint judgment mechanism is innovatively introduced, exclusive recognition logic is designed for specific low-elevation strip noise only containing XY-direction covariance in the subsidence water area, the lamellar strip noise which cannot be recognized completely by a traditional algorithm can be accurately captured, and the recognition accuracy of the subsidence water area scene is improved. And the problem of eliminating the point cloud core noise of the subsidence water area is solved fundamentally.
Owner:ANHUI UNIV OF SCI & TECH

A method for predicting high temperature creep behavior of a high-strength steel wire that is rusted

The application discloses a kind of prediction methods of high-strength steel wire high temperature creep behavior of rust, belong to bridge cable safety assessment technical field.The method is first obtained by test the material intrinsic material parameters of rust high-strength steel wire test piece and un-rust high-strength steel wire test piece;Then three-dimensional scanning quantization corrosion morphology is used, the maximum pit depth of rust high-strength steel wire surface and the pit root radius of pit bottom are extracted, and then the stress concentration coefficient and the effective bearing area decay function after net section loss are calculated, and the corrosion damage index is introduced;On this basis, the creep strain rate prediction model considering local stress concentration, section loss and material damage is established.The prediction method of the application realizes the quantitative prediction from pit micro-morphology to macro creep behavior, and has great engineering application value for evaluating the safety and residual life of in-service bridge cable.
Owner:CHINA UNIV OF MINING & TECH

A method and system for underwater acoustic interference-resistant transmission based on sparse time-frequency feature mapping

This invention discloses an underwater acoustic anti-interference transmission method and system based on sparse time-frequency feature mapping. The method includes: at the transmitting end, adaptively generating a fractional-order linear frequency-modulated waveform with a specific time-frequency shear slope based on the Doppler state of the underwater acoustic channel, achieving physical-layer focusing of transmitted energy; at the receiving end, constructing a hybrid observation model containing wide-block sparse channel components and narrow-block sparse burst noise components, and using a dual-channel variational Bayesian algorithm to jointly iteratively infer the posterior probability distribution of environmental burst noise in the fractional-order domain; finally, recovering the original signal through soft-threshold interference cancellation and fractional-order channel equalization. This invention effectively solves the communication failure problem caused by high-dynamic Doppler diffusion and marine biological impulse noise interference in underwater acoustics by actively mapping the waveform and using heterogeneous sparse joint inference at the receiving end, significantly improving transmission reliability in harsh underwater acoustic environments.
Owner:XIAMEN UNIV

An IMU-assisted GNSS online anomaly detection and reporting method and device

This invention relates to an IMU-assisted online GNSS anomaly detection and reporting method and apparatus. The method involves acquiring GNSS observation data and IMU measurement data and aligning them in time; generating a predicted motion state of the receiver at the current observation epoch based on the IMU measurement data; calculating the predicted GNSS observation value of at least one satellite at the current observation epoch based on the predicted motion state and satellite ephemeris information; constructing a residual sequence based on the predicted GNSS observation value and the corresponding GNSS observation value in the GNSS observation data, performing sliding time window statistics, and determining anomalies based on the statistical results; when an anomaly is determined, generating a time index and a spatial index corresponding to the anomaly, forming a spatial-level interference event, and reporting it. This invention effectively reduces the false alarm rate and missed alarm rate in scenarios involving obstruction, multipath interference, and other interference, exhibits higher sensitivity to observation anomalies caused by moving interference, effectively lowers the implementation threshold at the receiving end, and possesses high engineering application value.
Owner:ZHEJIANG UNIV OF TECH +1

Method for quality prediction of discrete manufacturing flow line based on mechanism and data joint driving

PendingCN122175462ASolve the problem of output violating physical lawsImprove physical consistencyData processing applicationsInference methodsAutomatic controlData acquisition
A discrete manufacturing pipeline quality prediction method based on mechanism and data joint driving belongs to the field of intelligent manufacturing and industrial artificial intelligence, and the method comprises the following steps: first, data acquisition and preprocessing under the industrial scene of the discrete manufacturing pipeline; second, state space deduction and single variable nonlinear analysis of the sparse time sequence characteristics of the discrete manufacturing pipeline; third, mechanism joint training and real-time closed-loop intervention of the discrete manufacturing pipeline quality prediction model. The present application significantly improves the physical consistency of the discrete manufacturing pipeline quality prediction, realizes continuous inference of the hidden state under irregular sampling gaps, and enhances the safety decision-making ability and engineering application value of the automatic control of the discrete manufacturing pipeline.
Owner:CHINA JILIANG UNIV

An electromechanical brake system based on heterogeneous motor redundancy and a control method thereof

This invention discloses an electromechanical braking system and its control method based on heterogeneous motor redundancy, relating to the field of brake-by-wire technology for new energy vehicles. The system includes the following steps: During vehicle braking, a permanent magnet synchronous motor (PMSM) acts as the main drive source, outputting braking torque, while a switched reluctance motor (SRM) operates in standby or low-power auxiliary mode, forming a heterogeneous motor redundant drive structure. This invention achieves complementary failure modes and reduces the risk of common-mode failures by employing a heterogeneous redundancy structure of a PMSM and a SRM; simultaneously, it optimizes system economy by utilizing the low cost and low standby energy consumption characteristics of the SRM. A deep learning health prediction model is introduced to achieve early fault prediction and proactive switching, and a rapid, seamless switching mechanism within 20ms ensures braking continuity and system safety.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD

Modular intelligent pipe support hanger

PendingCN122359574ADoes not change the broadband vibration reduction functionHigh engineering application valueVibration controlWireless
A modular intelligent pipe support, belonging to the field of pipeline vibration control, includes a support body, sensors, a vibration signal acquisition, analysis, and alarm module, and a dynamic vibration absorption module. This invention is geared towards practical engineering applications. While retaining the boundary constraints and vibration control functions of existing pipe supports, it adds a modular device that integrates dynamic vibration absorption, energy harvesting, vibration monitoring, anomaly alarms, and wireless communication functions. This solves the problems of existing pipe supports having limited functionality, being unable to effectively handle pipeline spectrum vibrations, and requiring significant manpower and resources for routine safety inspections. Its core technology lies in utilizing a cantilever beam-mass block structure to provide targeted dynamic vibration absorption reaction force, effectively controlling pipeline spectrum vibrations; using piezoelectric materials to convert the mechanical energy generated during the cantilever beam vibration process into electrical energy, thereby powering the online monitoring module; and using sensors to collect the support vibration signals in real time, thus realizing the monitoring and analysis of support vibrations.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Vehicle starting control method and device, vehicle and medium

PendingCN121973783AImprove driving experienceImprove real-time controlRoad surfaceSelf adaptive
The invention relates to the technical field of vehicle control, and discloses a vehicle starting control method and device, a vehicle and a medium, and the method comprises the following steps: in response to starting operation of the vehicle in an automatic parking state, adjusting parking release control parameters according to current road surface information and vehicle parameters; and releasing the automatic parking state according to the adjusted parking release control parameter. The parking release control parameters are dynamically adjusted according to real-time road surface information and vehicle parameters through a dynamic and self-adaptive parameter adjusting mechanism, the limitation of traditional fixed calibration is eliminated, different road conditions and vehicle states can be adapted, the vehicle starting quality in the automatic parking state is remarkably improved, and the vehicle starting speed is increased. And fixed parameters under the automatic parking function can be continuously optimized, so that the method adapts to individual manufacturing differences of different vehicles, starting abnormities such as slope sliding, dragging and vehicle channeling of the vehicles can be effectively avoided, the safety and smoothness of vehicle starting are improved, and meanwhile the user driving experience and the vehicle intelligent control level are greatly improved.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Hybrid ac / dc microgrid based on reconfigurable modular multilevel converter

PendingCN122267939ASuppress fault spreadReduce the risk of cascading failuresElectric power transfer ac networkAc-dc conversionCapacitanceConverters
The application relates to a hybrid AC / DC microgrid based on a reconfigurable modular multilevel converter and an operation method and a storage medium thereof. The microgrid comprises a modular multilevel converter (MMC), the MMC comprises a plurality of phase legs, each phase leg comprises an upper arm and a lower arm, each arm is connected with a plurality of sub-modules in series, each sub-module comprises a semiconductor switching device, a capacitor energy storage unit and a controllable bypass switch structure; the MMC is connected with an AC bus and a DC bus respectively to realize bidirectional power conversion. The system comprises a plurality of feeder branches which are connected with the bus through power switching devices. Distributed edge controllers are arranged at the sub-modules or feeder interfaces to collect voltage and current parameters and output isolation or bypass signals in an abnormal condition; meanwhile, hierarchical reconfiguration controllers are arranged to perform structure reconfiguration and power path redistribution. The application realizes fault rapid isolation and reconfiguration cooperation through hierarchical control, maintains the voltage stability of the key load bus, and realizes the effect of improving the system reliability and power supply continuity.
Owner:浣江实验室

Vehicle lane-keeping behavior real-time monitoring method based on image semantic segmentation

This invention discloses a real-time monitoring method for vehicle lane-crossing behavior based on image semantic segmentation, comprising the following steps: acquiring traffic video data to obtain a road image sequence and performing preprocessing; inputting the image semantic segmentation model for semantic segmentation processing to obtain a semantic segmentation result image; performing morphological processing and connected component analysis to obtain the set of pixel boundaries of the vehicle region and the set of pixel boundaries of the lane lines; calculating the spatial position data of the lane lines and performing perspective correction processing to obtain perspective-corrected lane line spatial position data; generating the position region of the vehicle region in the image coordinate system; performing target association matching to generate vehicle motion trajectory data; establishing spatial relationship data and forming relative position changes; performing temporal consistency analysis and real-time determination, and outputting the vehicle lane-crossing behavior detection result, thereby achieving continuous, accurate, and real-time monitoring of vehicle lane-crossing behavior.
Owner:CHINESE PEOPLE'S PUBLIC SECURITY UNIVERSITY

An aircraft final assembly scheduling method and equipment based on an improved genetic algorithm

PendingCN122088983Ameet needsFinal assembly completion time shortenedForecastingBiological modelsCompletion timeAlgorithm
This invention belongs to the technical field of aircraft manufacturing engineering and intelligent scheduling optimization. It discloses an aircraft final assembly scheduling method and equipment based on an improved genetic algorithm. The steps are as follows: (1) Construct a scheduling model based on process and worker data with the optimization objectives of minimizing the final assembly completion time and minimizing the number of workers involved; (2) Encode the process priority and worker skill slots obtained from the scheduling model using an improved genetic algorithm in the encoding stage, and use the encoding as chromosomes to form an initial population; (3) Perform event-driven decoding on the individuals in the initial population to obtain an initial scheduling scheme; (4) Calculate the fitness value of each chromosome according to the total completion time and the number of workers involved corresponding to the initial scheduling scheme, and screen all chromosomes according to the fitness value to obtain a new population, and then finally obtain the aircraft final assembly scheduling scheme. This invention realizes the collaborative optimization of completion time and the number of workers involved.
Owner:HUAZHONG UNIV OF SCI & TECH

Deep learning based vocs pollution feature analysis and tracing method

PendingCN122286469AAvoid principle flawsimprove accuracyAlgorithmChemical transformation
This invention discloses a deep learning-based method for VOCs pollution feature analysis and source tracing. The method includes acquiring online monitoring time-series data of VOCs and synchronous meteorological parameters of the monitoring area, constructing a multidimensional input tensor after preprocessing, building a deep neural network model containing a spatiotemporal feature extraction module and a source apportionment regression module, extracting nonlinear chemical coupling features and temporal evolution features between VOCs components using a one-dimensional convolutional neural network and a bidirectional long short-term memory network, and weighting and fusing them using meteorological parameters, and finally decoding and outputting the source component spectrum and temporal contribution rate that conform to physical constraints through the source apportionment regression module to generate a pollution feature map. This invention effectively solves the problem that traditional receptor models struggle to handle nonlinear chemical transformations and complex meteorological couplings, improves the accuracy and physical interpretability of VOCs pollution source tracing, and has online update capabilities to adapt to environmental changes.
Owner:FUJIAN JINHUANG ENVIRONMENTAL PROTECTION TECH CO LTD

Double-beam synchronous following anti-reflection device for laser forging printing

The invention discloses a double-beam synchronous following anti-reflection device for laser forging printing, which is characterized in that the specific wavelength combination of 1064nm powder bed cladding laser and 532nm green ultrafast strengthening laser is adopted to impact a fusion layer, and a special reflecting coating with the wavelength of 532nm is coated on a scanning galvanometer mechanism; therefore, the coating can selectively transmit laser of 1064nm and efficiently reflect laser of 532nm at the same time by utilizing the obvious wavelength difference between the two; on the basis, diffuse reflection of green ultrafast laser can be selectively isolated, so that damage to the laser caused by return light is fundamentally avoided, stable work of equipment in a long-time and high-power following mode is ensured, and therefore, the device is very suitable for large-scale application and popularization in the technical field of laser forging printing.
Owner:AIR FORCE UNIV PLA

A coal flow impurity rotating detection method based on physical blur modeling and scene customized attention

PendingCN122312993AStable local texture mutationsStable characteristics
This invention provides a method for detecting rotating debris in coal flow based on physical fuzzy modeling and scene-customized attention. The method includes: acquiring a clear coal flow image and then labeling non-coal debris targets in the image; establishing a dataset; constructing a debris detection network; constructing a physics-driven motion fuzzy mapping model; using the motion fuzzy mapping model to dynamically blur the clear coal flow image, generating training samples simulating motion fuzziness phenomena in a conveyor belt; training and optimizing the debris detection network; inputting a real-time coal flow image into the optimized network to obtain candidate detection results for non-coal debris targets; post-processing the candidate detection results and outputting the final filtered detection results. This invention can improve the stability and accuracy of debris detection under complex conditions of high-speed coal flow, reduce the influence of motion fuzziness and background interference, and provide technical support for the safety monitoring and automatic sorting of coal mine conveying systems.
Owner:CHINA UNIV OF MINING & TECH

Aorta motion feature extraction and disease risk prediction system based on medical image analysis

PendingCN122550487AReduce global motion interferenceImprove robustness
This invention belongs to the field of medical image processing technology, specifically a system for aortic motion feature extraction and disease risk prediction based on medical image analysis. The system includes modules for acquiring multi-temporal image sequences and clinical data, dynamic segmentation of aortic anatomical structures, construction of a dynamic relative coordinate system, trajectory preprocessing and standardization, trajectory segmentation analysis based on physiological phases, multidimensional dynamic feature extraction, and risk stratification prediction model construction. This invention integrates multidimensional motion features with clinical indicators to construct a risk model based on machine learning or statistical regression, outputting a predicted value for the individual's cardiovascular disease risk. This invention can reduce global interference caused by respiratory and cardiac translation, improve the biological specificity and inter-individual comparability of features, achieve fully automated processing, and enhance the risk prediction ability for cardiovascular events such as heart failure, atrial fibrillation, and aortic disease, showing promising application prospects.
Owner:FUDAN UNIVERSITY

A fault location method for traction power supply system feeder breaker 1 with 2 modes

This invention discloses a fault location method for a traction power supply system feeder circuit breaker in a 1-to-2 mode, relating to the field of electrified railway traction power supply technology. By converting the cross-connecting current between the AT substation and the section substation into the up and down feeder currents of the traction substation, the first fault interval from the traction substation to the AT substation can also be located using the cross-connecting current ratio method. This method also considers the differences between Type I and Type II substations. Using this method can improve the fault location accuracy of the first fault interval, controlling the location error within 250 meters. This ensures that maintenance personnel can quickly locate the fault point, promptly handle the fault, and restore normal line operation when a fault occurs, which is of great significance for ensuring the safe, stable, and efficient operation of the railway transportation system.
Owner:NANJING SAC RAIL TRAFFIC ENG CO LTD

An improved variational bayesian sparse learning outlier azimuth estimation method

ActiveCN115980662BImprove estimation accuracyImprove position estimation accuracyWater resource assessmentSystems with undesired wave eliminationSparse learningOriginal data
The application provides an improved sparse learning out-of-grid direction-of-arrival estimation method based on variational Bayesian. The method is characterized in that: the original data received by a hydrophone array is preprocessed, a real value transformation is used to convert a vectorized covariance matrix signal in a complex number field to a real number field, and the idea of variational sparse Bayesian learning and grid evolution is combined to make the grid evolve from an initial uniform grid to a non-uniform grid adaptively in an iteration process. The evolution process includes grid updating and grid fission. The evolved grid points are gradually close to the real source position through the alternately iterative grid updating process and grid fission process. Compared with the traditional compressed sensing method, the method has higher DOA estimation accuracy, reduces the operation complexity, optimizes the operation efficiency, improves the resolution capacity of the source, and has higher application value in actual engineering, especially in the case of few snapshots and low signal-to-noise ratio.
Owner:QINGDAO UNIV OF TECH

Air-cooled heat pump unit exhaust vane type silencer structure

The utility model discloses an exhaust vane type silencer structure of an air-cooled heat pump unit, which is mounted above an exhaust fan component of the air-cooled heat pump unit and comprises an upper silencing insert, a lower plenum chamber and a flow deflector component arranged in the lower plenum chamber. The flow deflector assembly comprises flow deflectors, fixing ribs and fixing columns, the flow deflectors are at least used for adjusting flow field distribution in the silencer, and the fixing ribs are connected with the flow deflectors and the fixing columns. The flow deflector is used for adjusting the flow field of airflow entering the silencer insertion piece part, so that the flow field in the silencer is more uniform, the situation that airflow regeneration noise is increased due to the fact that the local wind speed is too high is avoided, and finally the actual noise reduction performance of the silencer is improved.
Owner:浙江省环境科技股份有限公司

Capillary Evolution Modeling Method for Humidity-Related Adhesion Forces under Micrometer-Scale Probes

This invention relates to a method for modeling the capillary evolution of humidity-related adhesion forces under micrometer-scale probes. This method establishes a physical relationship between ambient relative humidity and Kelvin radius, and calculates the Kelvin radius in conjunction with the initial volume of the liquid bridge, thereby constructing a parameterized model of capillary forces that characterizes the change in liquid bridge volume with ambient humidity. The influence of the liquid film on the solid surface is considered during model construction, enabling the model to more realistically reflect the formation and evolution of liquid bridges in actual micro / nano interfaces. As the two surfaces gradually move away, the relationship between the curvature of the liquid bridge interface and the Kelvin radius is established under the condition that the liquid bridge volume remains constant, thus achieving a continuous description of the evolution of capillary and adhesion forces during the separation process between the micrometer-scale probe and the sample interface. Furthermore, experimental measurements and model verification of micrometer-scale interface forces are conducted using a self-developed fiber Bragg grating probe.
Owner:HEFEI UNIV OF TECH

Water conservancy project design earthwork volume measuring and calculating method based on BIM

PendingCN121997749AAvoid unfeasible risksDouble improvement of accuracyGeometric CADData processing applicationsEnvironmental resource managementHydraulic engineering
The invention specifically relates to a BIM-based hydraulic engineering design earthwork volume calculation method, and relates to the technical field of hydraulic engineering design, and the method comprises the steps: generating a cross-regional scheduling instruction through a high layer, and carrying out the coevolution process of intra-regional precise optimization and cost feedback iteration through a bottom layer until the overall total cost is converged, and obtaining an optimal cross-regional scheduling and intra-regional deployment scheme. According to the method, qualitative engineering constraints such as soil matching, construction time sequence and transport distance economy are converted into quantifiable transport network graph theory rules such as effective edge filtering, time sequence verification and flow limitation, and it is ensured that the measurement and calculation process strictly conforms to the actual construction logic; the risk that a deployment scheme is not feasible due to the fact that constraint consideration is not comprehensive in a traditional method is avoided from the source, and double improvement of measurement and calculation precision and construction adaptability is achieved.
Owner:TANGHE COUNTY WATER CONSERVANCY BUREAU

Spot clearing electricity price prediction system fusing new energy output fluctuation characteristics

PendingCN121810340AAccurately simulate the supply-side contraction phenomenonAccurately reflect the long tail effectMarket predictionsFlicker reduction in ac networkElectricity price forecastingNew energy
The invention relates to the technical field of electricity market electricity price prediction, and discloses a spot clearing electricity price prediction system fusing new energy output fluctuation characteristics, and the system comprises a fluctuation characteristic extraction module which carries out the variational mode decomposition of a new energy output prediction sequence, and generates fluctuation impact momentum and duration; the climbing scarcity calculation module is used for calculating a reference equivalent climbing scarcity in combination with the polymerization residual climbing capability and the fluctuation impact momentum; the hysteresis state correction module is used for correcting and generating a scarcity degree state index by using a state attenuation parameter based on fluctuation duration; the supply curve reconstruction module is used for generating a dynamic effective supply curve by carrying out linear deformation on the reference residual supply curve by utilizing the physical capacity cut-off quantity mapped by the index and a quotation slope correction coefficient; and the clearing electricity price solving module is used for outputting a predicted value based on the curve. The new energy fluctuation impact and hysteresis effect are effectively quantified, and the prediction precision is improved.
Owner:QINGDAO FANGTIAN TECH CO LTD

Fire extinguishing performance testing device for energy storage system fire extinguishing system

This invention provides a fire extinguishing performance testing device for fire protection systems used in energy storage systems, belonging to the field of fire extinguishing performance testing technology. It includes a basic characteristic parameter acquisition module, a test scheme intelligent generation module, a runaway test condition simulation module, a multi-dimensional parameter acquisition and monitoring module, and a fire extinguishing performance evaluation and analysis module. The invention constructs an individual characteristic parameter set for the tested energy storage system through the basic characteristic parameter acquisition module, enabling the test scheme intelligent generation module to generate targeted dynamic time-series test schemes. This achieves precise matching between the test scheme and the actual operating conditions of the energy storage system, as well as dynamic simulation of the entire thermal runaway process. Through the multi-dimensional parameter acquisition and monitoring module and the fire extinguishing performance evaluation and analysis module, it achieves a comprehensive evaluation of fire extinguishing efficiency, cooling performance, and decontamination effectiveness across three dimensions. Based on the distance to the evaluation nodes, it automatically outputs the optimal fire-fighting strategy, improving the intelligence level and engineering application value of the testing device.
Owner:THREE GORGES NEW ENERGY SIZIWANG BANNER CO LTD +1

Weed detection method and device based on hypergraph enhanced YOLOv11 framework

PendingCN122265829AMake up for the limitationsImplement long-range dependency captureCharacter and pattern recognitionBiological modelsPattern recognitionWeed detection
The application discloses a kind of based on hypergraph enhanced YOLOv11 frame weed detection method and device, method includes: based on YOLOv11 baseline network, reconfigures local-global collaborative main network, obtains first optimization network reconfiguration neck network is hypergraph enhanced semantic neck, to establish high-order space topological feature fusion mechanism, obtains second optimization network;Second optimization network is used as the final enhanced detection model, and based on the enhanced detection model, weeds in field are detected;Using the constructed data set and multiple public data sets, the enhanced detection model is comprehensively experimentally verified;The enhanced detection model after verification is used for weed detection.The device includes: processor and memory.The present application solves the problem that the weed detection model in the prior art has low detection accuracy due to insufficient global context perception, weak geometric deformation representation capability and missing high-order topological relationship in complex farmland scenes.
Owner:XINJIANG AIR & EARTH INTEGRATION LABORATORY TECHNOLOGY CO LTD +1

Fracture morphology and net pressure and minimum stress time-dependent evolution inversion method

PendingCN122286705AImplementing time-varying collaborative representationsimprove integrityBottom hole pressureClassical mechanics
This invention relates to a time-varying evolution inversion method for fracture morphology, net pressure, and minimum geostress, belonging to the field of petroleum technology. The method includes: acquiring on-site bottomhole pressure data, monitoring well information, and LF-DAS data during fracturing operations; discretizing the fracture along its length into several units based on the three-dimensional displacement discontinuity method and constructing a net pressure distribution matrix; using a pre-constructed mechanical response relationship between net pressure and fracture width distribution to solve for the fracture width distribution corresponding to the current net pressure distribution; calculating the axial strain response of the fracture at the monitoring well based on the fracture width distribution to form a forward model for pressure-fracture width-strain solution; iteratively updating the fracture half-length and net pressure using the least squares method, constructing a residual between the inverted strain and the on-site strain to minimize the residual, and obtaining the time-varying inversion results for the fracture half-length and net pressure. The time-varying evolution process of minimum geostress can be characterized by the difference between the on-site bottomhole pressure and the inverted net pressure.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A self-calibration method for magnetic shielding parameters of a laser gyroscope IMU

PendingCN122083997AAutomatically adapt to shieldingImprove navigation accuracyMeasurement devicesResidual magnetic fieldMagnetic shield
This application provides a self-calibration method for the magnetic shielding parameters of a laser gyroscope IMU, relating to the fields of inertial navigation and precision instrument technology. The method includes the following stages: Offline initialization modeling stage: Applying a multi-dimensional standard excitation magnetic field to the IMU, simultaneously acquiring external excitation magnetic field data, residual magnetic field data inside the IMU, control parameter data of the magnetic shielding system, and zero-bias drift data of the laser gyroscope. This application provides a self-calibration method for the magnetic shielding parameters of a laser gyroscope IMU, abandoning the model of permanently fixing magnetic shielding parameters. It creatively proposes a data-driven online real-time parameter optimization mechanism, which can automatically adapt to wide temperature range changes and shielding performance degradation caused by material aging, ensuring that the IMU always operates in a state where the magnetic shielding effectiveness is approximately optimal.
Owner:HUNAN HUATIAN PHOTOELECTRIC INERTIAL NAVIGATION TECH

Wind turbine generator set active support method, device and equipment considering running state of generator set

The invention discloses a wind turbine generator set active power support method, device and equipment considering a generator set operation state, and relates to the field of wind turbine generator sets and new energy grid connection, and the method comprises the steps: constructing an operation state space model of a target wind turbine generator set; constructing an output equation based on the coupling relationship between the active power output of the operation state space model and the torque fluctuation of the transmission chain; constructing an operation constraint condition; based on the operation constraint condition, constructing a target function with wind turbine generator active power tracking deviation minimization, shafting fatigue load minimization and frequency modulation capability maximization as targets; and based on the real-time operation state data of the target wind turbine generator, adopting a multivariable coordinated optimization method to solve the target function to obtain control parameters for performing operation control on the target wind turbine generator, and adopting the control parameters to perform operation control on the target wind turbine generator. The method can improve the operation stability of the wind turbine generator.
Owner:SHENYANG UNIVERSITY OF TECHNOLOGY

A high-precision anti-interference control method for a UAV holder under transient impact load

PendingCN122131828AEnsure posture stabilityStrong anti-interference abilityControl using feedbackInner loopClassical mechanics
This invention provides a high-precision anti-disturbance control method for UAV gimbals under transient impact loads, belonging to the field of precision servo control technology. It employs a cascade control architecture: the outer loop uses model predictive control (MPC) and introduces control increment constraints to plan an overshoot-free velocity trajectory; the inner loop uses linear active disturbance rejection control (LADRC) and establishes an extended state observer to estimate and compensate for the total disturbance of multi-stage transient impacts in real time. This invention, using the aforementioned high-precision anti-disturbance control method for UAV gimbals under transient impact loads, reduces the settling time to 0.18 s and lowers the maximum dynamic position error during firing to 0.0005 rad, achieving precise steady-state maintenance under high-impact environments.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1