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31 results about "Data separation" patented technology

Data Separation. Data separation is an issue that can occur while trying to fit an ordinal or binary logistic regression model. Separation occurs when a predictor variable (or set of predictor variables) perfectly predict your outcome variable.

Bacterial colony heterogeneous data separation method, apparatus and device, and storage medium

The invention provides a bacterial colony heterogeneous data separation method and device, equipment and a storage medium. Relates to the technical field of microbial colony heterogeneous data separation. The method comprises the following steps: performing hierarchical clustering on microbe single-cell Raman spectrum data to identify outliers; based on the outliers, performing de-noising processing on the single-cell Raman spectrum data of the microorganisms to obtain de-noised data; performing spectral clustering based on the de-noised data to obtain a spectral clustering result; wherein the spectral clustering result is used for identifying or marking bacterial colony cells in different growth periods; and evaluating the spectral clustering result by using a contour coefficient and a CH index to determine an optimal clustering number, and performing spectral clustering on the de-noised data based on optimal clustering data to obtain a final clustering result. According to the method, outlier detection, pruning optimization, spectral clustering and quantitative evaluation are combined, so that the precision and stability of microbe heterogeneity analysis are remarkably improved.
Owner:SUQIAN COLLEGE

Power grid voltage long time sequence dynamic prediction method and system

The invention discloses a power grid voltage long-time-sequence dynamic prediction method and system. The method comprises the following steps: acquiring historical voltage effective value data and cleaning the historical voltage effective value data; separating the data into a trend component and a fluctuation component by using a signal decomposition algorithm; extracting overall and global time sequence features and local mutation features through a double-flow network; fusing the features by using an adaptive gating unit, inputting the features into a decoder, and outputting a voltage predicted value and a fluctuation interval; and generating a stability evaluation index based on the fluctuation interval. According to the method, through multi-scale feature decoupling and physical constraint loss function optimization, long-time evolution and instantaneous disturbance of the voltage can be accurately captured, the problems that a traditional model lags in sudden change working condition prediction and lacks physical consistency are solved, and a reliable basis is provided for power grid safety scheduling.
Owner:STATE GRID FUJIAN ELECTRIC POWER RES INST +1

Vehicle braking distance prediction method and device, equipment and storage medium

The invention discloses a vehicle braking distance prediction method and device, equipment and a storage medium, and relates to the technical field of vehicle driving safety, and the method comprises the steps: obtaining a road surface texture data set and a friction coefficient data set, inputting the road surface texture data set to a three-dimensional road surface reconstruction model, and carrying out data separation, data noise reduction and data reconstruction. And inputting the friction coefficient data set and the reconstructed pavement texture data into an anti-skid performance prediction model to obtain a prediction result of the pavement friction coefficient, and based on the reconstructed pavement texture data and the predicted pavement friction coefficient, establishing a three-dimensional tire water skiing model and carrying out fluid-solid coupling simulation to obtain a tire-road adhesion characteristic curve of the wet and slippery pavement. And inputting the tire road adhesion characteristic curve into the vehicle braking simulation model, and calculating the vehicle braking distance on the wet and slippery road surface through dynamic simulation, so that the problem that the actual tire road adhesion characteristic change is ignored in a traditional braking distance formula is solved, and high-precision prediction of the braking distance in a complex scene in a rainy day is realized.
Owner:SOUTHWEST JIAOTONG UNIV

A power grid voltage long-time series dynamic prediction method and system

The application discloses a power grid voltage long-time sequence dynamic prediction method and system, and the method comprises the following steps: obtaining historical voltage effective value data and cleaning; using a signal decomposition algorithm to separate the data into a trend component and a fluctuation component; extracting global long-time sequence features and local mutation features through a double-flow network; using an adaptive gating unit to fuse the features and inputting the decoder to output voltage prediction values and fluctuation intervals; and generating a stability evaluation index based on the fluctuation interval. Through multi-scale feature decoupling and physical constraint loss function optimization, the application can accurately capture the long-time evolution and instantaneous disturbance of the voltage, solve the problems of lagging prediction of traditional models for mutation working conditions and lack of physical consistency, and provide a reliable basis for power grid safety scheduling.
Owner:STATE GRID FUJIAN ELECTRIC POWER RES INST +1

Deep learning-based DAS-VSP four-wave-field separation method and system

The invention discloses a DAS-VSP four-wave-field separation method and system based on deep learning, and relates to the field of data processing, and the method specifically comprises the steps: obtaining VSP data, and separating the VSP data into multiple types of wave fields; superposing the multiple types of wave fields to generate a mixed wave field, and generating a training set based on the mixed wave field and the multiple types of wave fields; constructing an initial wave field separation model based on a U-Net network, and performing iterative training on the initial wave field separation model by using the training set to generate a final wave field separation model; and obtaining to-be-processed VSP data, inputting the to-be-processed VSP data into the wave field separation model, and outputting prediction results of various wave fields. According to the method, high-precision separation can be guaranteed, and meanwhile, rapid and efficient wave field treatment is achieved.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Pipeline system-based pre-leakage automatic analysis method and system

PendingCN122366227ASimulationAnalysis method
The application provides a pipeline system-based pre-breakage leakage automatic analysis method and system. The pipeline system-based pre-breakage leakage automatic analysis method can realize accurate identification of the safety state of all positions of a pipeline, constructs a whole-process automatic pre-breakage leakage analysis system from three-dimensional model input to criterion determination, effectively solves the technical pain points of data separation, multiple manual intervention, redundant calculation, low determination efficiency and insufficient accuracy in traditional analysis, and greatly improves the automation, intelligent level and result reliability of pipeline pre-breakage leakage analysis.
Owner:SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO LTD

Method and system for AI-based interactive searches

A system for interactive searches based on user queries data and a plurality of Large Language Models (LLMs) including a processor of a Human-Machine Interface (HMI) server node configured to host a network of LLMs and at least one machine learning module (ML) and connected to at least one user-entity node over a network and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to: receive a search request input data from the at least one user-entity node; evaluate, by a first dedicated LLM, relevance of the search request input data by discerning between primary and secondary information; responsive to evaluation by the first dedicated LLM, derive classifying features from the primary and secondary information and generate a feature vector based on the classifying features; ingest the feature vector into the ML module configured to extract additional search parameters from a predictive search model based on historical search data associated with the at least one user-entity node; dissect, by a second dedicated LLM, the search request input data and the additional search parameters to separate the data into qualitative and quantitative criteria elements based on the primary and the secondary information; transform, by a third dedicated LLM, the quantitative criteria elements into structured queries for a database; process, by a fourth dedicated LLM, the qualitative criteria elements by searching through a semi-structured data repository; and synthesize, by the fifth LLM, processed search findings into a succinct human-language summary.
Owner:INGOLD DAN +2

Storage chip aging prediction method and device based on topological sorting and medium

The invention discloses a storage chip aging prediction method and device based on topological sorting and a medium, and relates to the technical field of chip aging tests.The method comprises the steps that an initial static topological graph is constructed based on a predefined internal dependency relationship of a storage chip; collecting performance monitoring data of the storage chip, performing time sequence relevance identification, and generating a dynamic dependency edge; fusing the dynamic dependent edge with the initial static topological graph to generate a mixed topological graph; decomposing the mixed topological graph through a graph community division algorithm to generate a plurality of sub-graph communities; performing topological sorting on each sub-graph community to generate a functional component test sequence of each sub-graph community; and respectively executing an aging test task on each sub-graph community and the corresponding functional component test sequence through a plurality of distributed test nodes to generate a plurality of pieces of performance parameter attenuation data. According to the method, the performance monitoring data and the static topology are fused, the hybrid topological graph of the chip is constructed, and the problem of relevance deficiency caused by data separation is solved.
Owner:SHENZHEN COMOS INTELLIGENT TECHNOLOGY CO LTD

House plan size measurement method, device, equipment, medium and program product

The invention relates to a house type image size measurement method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring a to-be-identified house type image; performing target detection on the to-be-identified house type image to obtain a target detection result; performing data separation according to the target detection result to obtain a data separation result; according to a data separation result, carrying out independent scale value calculation to obtain scale value data; and performing size batch calculation on the to-be-detected furniture of the target detection result according to the scale value data to obtain a size measurement result. By adopting the method, high accuracy and high robustness of house type image size measurement can be ensured by detecting and fusing information of a plurality of measuring scales, and full-automatic and high-efficiency house type image size measurement is realized.
Owner:KINGDEE SOFTWARE(CHINA) CO LTD

Sensor-based thermal conductive gel water resistance detection method and system

The present application relates to the technical field of heat-conducting material detection, and discloses a heat-conducting gel water resistance detection method and system based on a sensor. The method comprises receiving real-time monitoring data of a heat-conducting gel in a water resistance test environment collected by a spectrum sensor and a thermal imaging sensor; dividing samples into multiple independent detection sub-regions, comparing the real-time monitoring data with historical database reference data to separate stable components and variable components; using pattern classification technology to identify unexpected change patterns, using relationship mining technology to find causal correlations and co-occurrence characteristics, and obtaining key influence factors; taking the key influence factors as input, combining with similar material standard water resistance performance data to construct a reference performance curve, determining a potential water resistance risk level according to the curve deviation degree and an intelligent evaluation framework; and using a probability inference model to predict water resistance changes within a preset time window and generating a detection result report.
Owner:GUANGDONG SHENGKANGTAI NEW MATERIALS CO LTD

Wind turbine generator yaw error prediction control method and system based on deep learning

The invention discloses a wind turbine generator yaw error prediction control method and system based on deep learning, and the method comprises the steps: firstly processing multi-dimensional original sensor data through a self-adaptive denoising module, separating out a pure physical signal, and obtaining an instantaneous difference signal; furthermore, the difference signal is modeled in combination with the operation context of the unit, and the expected noise characteristic under the current working condition is predicted, so that the attributive noise level estimation is generated, and the normal operation fluctuation and the abnormal interference are effectively distinguished. On the basis, de-noising input and noise level estimation are cooperatively input into a Bayesian prediction model, prediction yaw error distribution containing a mean value sequence and a variance sequence is output, and explicit quantization of prediction result uncertainty is achieved. Finally, control risk assessment is performed based on the distribution, and adaptive control parameters are dynamically synthesized to optimize yaw action, so that the accuracy and safety of a control decision in an uncertain environment are ensured while data noise interference is suppressed.
Owner:HUANENG WEINING WIND POWER GENERATION CO LTD +2

Inferential process modeling, quality prediction and error detection using multi-stage data segregation

Computer-implemented method for generating a process model (601) for use in the analysis of the operation of a process (300) which can be operated in a number of different process stages as defined by a stage variable associated with the process (300), comprising: Acquiring training data from the process (300) during the operation of the process (300), wherein the training data include a value for each of a set of process parameters, a value for the stage variable, and a value of an outcome variable associated with each of a variety of different process measurement times; Dividing the training data into time fractions of the data using a computer processing device (102, 13) to produce a set of time fractional data for each time fraction of the data, wherein each set of time fractional data includes a value for each of the set of process parameters, a value for the stage variable and a value for the result variable; Storing sets of time-proportional data in a computer memory; using a computer processing device (102, 13) determine a set of process stage means from the training data, wherein the set of process stage means includes a stage variable mean for each of the process stages and one or more process parameter means for each of the process stages; Storing the sets of process stage resources in a computer memory; using a computer processing device (102, 13) determining a set of time-part means for each of the time parts of the data using the stored process stage means, wherein each set of time-part means includes a time-part mean for each of the process parameters; using a computer processing device (102, 13) developing a set of deviations from the mean for each time fraction of the data, wherein the set of deviations from the mean for a given time fraction of the data for each process parameter within the given time fraction of the data includes the use of the process parameter value of the given time fraction of the data and the time fraction mean for the process parameter for the given time fraction of the data to develop the deviation from the mean for the process parameter for the given time fraction of the data; and using a computer processing device (102, 13) generating a process model (601) using the sets of deviations from the mean for the time components of the data and the result variable values ​​for the time components of the data.
Owner:FISHER ROSEMOUNT SYST INC

Real-time marine environment element monitoring system

The invention relates to the technical field of environmental monitoring, in particular to a real-time marine environmental element monitoring system, which comprises an acquisition unit, a construction unit, a processing unit and a separation unit, and is characterized in that the acquisition unit adapts acquisition frequency according to marine depth, combines threshold triggering and external instructions, and acquires environmental data, node parameters and target signals in real time; the construction unit simulates an interference signal refraction propagation path through ray acoustics based on the data, extracts signal features, and fuses multi-dimensional data to train an interference prediction model; the processing unit inputs related data into a model and outputs a precise interference result; and the separation unit is combined with the interference result, and the interference signal is stripped from the mixed signal through frequency domain conversion, dynamic filtering, time domain reconstruction and verification. According to the method, accurate prediction and separation of interference signals are realized, the real-time performance, accuracy and reliability of marine environment element monitoring are remarkably improved, and powerful technical support is provided for marine resource development.
Owner:FOURTH INSTITUTE OF OCEANOGRAPHY MINISTRY OF NATURAL RESOURCES (CHINA ASEAN COUNTRIES JOINT RESEAR

Intelligent data access and integration system based on dynamic expansion architecture

The application discloses an intelligent data access and integration system based on a dynamic expansion architecture, comprising: a data source automatic identification module, which automatically detects and identifies various data sources and their characteristics; a data adaptation module, which adapts according to the characteristics of the data sources; an intelligent data quality management module, which predicts and automatically corrects data quality problems based on a self-learning mechanism; a data preprocessing module, which is used for cleaning and converting original data; a data integration module, which adjusts the data processing flow according to real-time load through a dynamic expansion architecture and a load balancing mechanism; a data storage module, which supports various database types and realizes cold and hot data separation storage; an API management module, which develops and maintains data access interfaces; and a monitoring and optimization module, which monitors system performance and data flow in real time and guarantees stable and efficient operation of the system. The application improves data access efficiency, quality and utilization of system resources and ensures system stability.
Owner:STATE GRID SIJI DIGITAL TECH (BEIJING) CO LTD +1

A method and system for identifying the islanded state of a microgrid with a grid-connected energy storage converter

This invention discloses a method and system for isolating microgrids using a grid-connected energy storage converter, belonging to the field of microgrid state identification technology. The method includes: collecting and cleaning multi-source monitoring data of the microgrid; using a disturbance baseline separation algorithm based on dynamic time window integration and threshold filtering to separate the data into steady-state and disturbance components; inputting the two components into a pre-trained state identification deep learning model, which is processed sequentially through a disturbance feature decoupling module, a dual-channel spatiotemporal feature fusion module, and a spatiotemporal feature collaborative extraction module to extract spatial feature vectors containing spatiotemporal correlations; and finally, calculating the state probability distribution using an adaptive state classification head based on Mahalanobis distance to determine the operating state. This invention significantly improves the identification accuracy and stability under noisy, transient, and transitional states by effectively separating disturbances, decoupling features, and collaboratively modeling spatiotemporal information.
Owner:YUEQING ONESTO ELECTRIC CO LTD

Method, device, equipment and medium for separating gravity data in metal mining area

ActiveCN120669322BGravitational wave measurementGravity anomalyMetal mining
The application discloses a gravity data separation method, device and equipment for a metal mining area and a medium, and relates to the technical field of gravity anomaly data processing. The method comprises the following steps: measuring gravity data of each measuring point in a target area, and preprocessing to obtain Bouguer gravity anomaly data of each measuring point in the target area; calculating the radial logarithmic power spectrum of the Bouguer gravity anomaly data, dividing the radial logarithmic power spectrum into multiple characteristic frequency bands, and extracting the Bouguer gravity anomaly data of each characteristic frequency band; and performing physical property inversion calculation based on the Bouguer gravity anomaly data of each characteristic frequency band to obtain the underground space density distribution result of the target area. In the constraint iteration process, the inversion result is approximated to the prior information, the gravity potential field inversion result of the metal mining area with clear prior information is strictly constrained in the minimum interval of the known prior information, and therefore the accuracy of the underground ore body position inversion is improved.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

An electroencephalogram signal data signal analysis method based on multi-modal deep learning

The application belongs to the cross field of artificial intelligence and physiological signal and medical image processing fields, and provides a brain electrical signal data signal analysis method based on multi-modal deep learning. The purpose is to solve the problem that the existing scheme still needs to set the extracted signal features manually and cannot completely cover all effective features of west syndrome. The main scheme includes extracting original brain electrical signal data and original muscle electrical signal data to obtain binary data; data separation obtains multi-channel time-frequency domain data and divides training set data, validation set data and test set data; the neural network model of deep learning is set, and the best model parameter is obtained through training; then the data is input for classification, the abnormal brain electrical signal data and muscle electrical signal data in each time period are obtained, and the annotation is saved as an annotation file.
Owner:ZHONGKE ZHIHE DIGITAL TECH (BEIJING) CO LTD

Method and system for detecting water resistance of heat-conducting gel based on sensor

The invention relates to the technical field of heat-conducting material detection, and discloses a sensor-based heat-conducting gel water resistance detection method and a sensor-based heat-conducting gel water resistance detection system. The method comprises the following steps: receiving real-time monitoring data, acquired by a spectrum sensor and a thermal imaging sensor, of the heat-conducting gel in a water resistance test environment; dividing a sample into a plurality of independent detection sub-regions, comparing real-time monitoring data with historical database reference data, and separating stable components from variable components; identifying an unexpected change mode by using a mode classification technology, and carrying out causal association and co-occurrence feature discovery on the unexpected change mode by using a relation mining technology to obtain a key influence factor; constructing a reference performance curve by taking the key influence factor as input and combining standard water resistance data of similar materials, and determining a potential water resistance risk level according to a curve deviation degree and an intelligent evaluation framework; and predicting the water resistance change in a preset time window by using the probability inference model, and generating a detection result report.
Owner:GUANGDONG SHENGKANGTAI NEW MATERIALS CO LTD

Vehicle braking distance prediction method, device, equipment and storage medium

This application discloses a vehicle braking distance prediction method, apparatus, device, and storage medium, relating to the field of vehicle driving safety technology. The method includes: acquiring a road surface texture dataset and a friction coefficient dataset; inputting the road surface texture dataset into a three-dimensional road surface reconstruction model; performing data separation, data denoising, and data reconstruction; inputting the friction coefficient dataset and the reconstructed road surface texture data into an anti-skid performance prediction model to obtain a predicted result for the road surface friction coefficient; based on the reconstructed road surface texture data and the predicted road surface friction coefficient, establishing a three-dimensional tire hydroplaning model and performing fluid-structure interaction simulation to obtain the tire-road adhesion characteristic curve of the wet road surface; inputting the tire-road adhesion characteristic curve into a vehicle braking simulation model; and calculating the vehicle braking distance on the wet road surface through dynamic simulation. This solves the problem that traditional braking distance formulas ignore actual tire-road adhesion characteristic variations, achieving high-precision prediction of braking distance in complex rainy scenarios.
Owner:SOUTHWEST JIAOTONG UNIV

Model construction method, industrial decision prediction method and device and electronic equipment

The invention provides a model construction method, an industrial decision prediction method and device and electronic equipment, and relates to the technical field of communication. The method comprises the following steps: constructing an industrial field knowledge graph; the industrial field knowledge graph defines industrial field rules according to standardized symbols; constructing a feature extractor; the feature extractor is used for performing data processing and feature extraction on the industrial data; performing joint optimization on the industrial field knowledge graph and the feature extractor through differentiable logic to obtain an industrial model; the industrial model is used for outputting an industrial decision prediction result corresponding to the industrial data. According to the scheme of the invention, the problems of rule and data separation and lack of interpretability of an output decision prediction result in a current industrial large model can be solved.
Owner:CHINA MOBILE ZIJIN INNOVATION INST CO LTD +2

A method and system for fast planning of navigation path for stochastic flow field

PendingCN122408762ASimulationData separation
This application relates to the field of navigation planning technology, and particularly to a method and system for rapid navigation path planning in stochastic flow fields. The method includes: based on flow field ensemble forecast data, separating the deterministic and uncertain components of the stochastic flow field, constructing a median flow field and a perturbation flow field set for the stochastic flow field; using the median flow field to characterize the deterministic component of the stochastic flow field, and using the perturbation flow field set to characterize the uncertain component of the stochastic flow field; proposing a conservative adjustment strategy for navigation speed based on the median flow field and the perturbation flow field set; under the condition of conservative navigation speed, using an improved level set equation to evolve the reachable frontier clockwise from the navigation starting point until the reachable frontier reaches the navigation target point and stops evolving; after reaching the target point, performing a counter-clockwise backtracking of the reachable frontier to calculate the time-optimal trajectory under the conservative navigation speed adjustment strategy, and using this time-optimal trajectory as the navigation planning path in the stochastic flow field.
Owner:NAT SPACE SCI CENT CAS

Spectral data separation method and system

The invention provides a spectral data separation method and system, and the method comprises the steps: calculating initial non-vegetation spectral data corresponding to to-be-processed mixed spectrum original data according to an initial vegetation coverage rate estimation value and initial vegetation spectral data; based on the initial vegetation spectrum data, the initial non-vegetation spectrum data and the initial vegetation abundance value, performing fitting to obtain initial mixed spectrum fitting data; based on the dual-objective optimization function, the vegetation spectral feature constraint condition and the initial mixed spectrum fitting data, repeatedly executing an iterative optimization solving process to obtain a spectral data separation result; the dual-objective optimization function is constructed by taking the minimum difference between the mixed spectrum original data and the mixed spectrum fitting data as an objective; the vegetation spectrum feature constraint condition is constructed based on the absorption feature and the reflection feature of the vegetation spectrum in the preset wave band. The spectral data separation operation is simplified, and the automation degree and adaptability of spectral data separation are improved.
Owner:NONGXIN TECH BEIJING CO LTD

Mixed-collection separated non-uniform mixed data splicing and extension method, device and equipment, storage medium and product

The invention provides a non-uniform mixed data splicing and extension method, device and equipment for mixed acquisition separation, a storage medium and a product, relates to the field of seismic exploration, and aims to realize high-quality mixed acquisition data separation. The method comprises the following steps: acquiring front and rear cannon mixed data; the pre-shot and post-shot mixed data comprises a pre-shot recorded value and a post-shot recorded value; carrying out splicing and extension processing on the front and rear shot mixed data to obtain a new single shot record value; the splicing delay processing comprises the steps of performing normalization weighting processing on the pre-shot record value and the post-shot record value within the overlapping time, or calculating a difference value between the pre-shot record value and the post-shot record value within the overlapping time, and superposing the difference value onto the post-shot record value.
Owner:CHINA NAT PETROLEUM CORP +1

Log function lookup table method based on float data format

PendingCN122450252AImaging processingAlgorithm
The application provides a log function lookup table method based on a float data format, which utilizes the storage format of floating point data to quickly calculate the value of log2 through lookup table; the method comprises the following steps: S1, a data separation stage: separating the input floating point base and exponent; only the base is subjected to lookup table; S2, a lookup table construction: constructing a lookup table, wherein each entry comprises a floating point number and a corresponding pre-computed result; S3, a quick retrieval: when the result of a certain floating point number needs to be calculated, the corresponding pre-computed result is directly retrieved in the lookup table, thereby avoiding complex floating point number calculation. Through the method, the precision loss can be effectively overcome, the accuracy of the calculation result is avoided to be affected, and the precision is higher than that of general direct lookup table. The calculation speed of projects such as image processing, scientific calculation and financial analysis can be effectively improved, and the system efficiency is improved.
Owner:HEFEI JUNZHENG TECH CO LTD

Competition information management system and method

The invention discloses a competition information management system and method, and relates to the technical field of information management, and the system comprises a competition information collection processing unit, a node fragmentation management unit, a node adaptive management unit, an information storage management unit and a management information output unit. The technical problems that node fragmentation and performance management cannot adapt to competition dynamic characteristics, hierarchical management is not performed during data storage, and storage resources are wasted are solved, the capacity expansion response time is shortened through prediction based on an LSTM + attention mechanism model and competition historical cycle data, and the capacity expansion efficiency is improved through competition type-resource template matching. The resource waste rate is reduced; metadata and business data are separately stored; a centralized shared pool and a local cache are combined; the repeated storage of the metadata is reduced; and the storage cost and the hot data read-write delay are reduced.
Owner:WUHAN DONGHU UNIV

Motor controller calibration data separation strategy

The invention discloses a motor controller calibration data separation strategy, relates to the technical field of electric vehicle driving systems, and aims to solve the problems that codes and calibration data in an existing motor controller are tightly coupled, internal storage management of the calibration data is disordered and the like. According to the strategy, physical separation of data and codes, classified storage of parameters and rapid adaptation of'one-code multi-motor 'are achieved through core means such as data physical separation and storage solidification, modeling data generation and dynamic adaptation, and meanwhile the reliability and traceability of the system are ensured through dynamic compiling verification, data identification design and the like. The method is not only suitable for an electric vehicle motor control system, but also can be extensively applied to multiple fields of industrial servo, robot control and the like, and has remarkable practical value.
Owner:EWEA-TECH CO LTD

A wheel hub motor bearing fault detection method based on multi-source fusion features

The application belongs to the technical field of hub motor bearing fault detection, and provides a hub motor bearing fault detection method based on multi-source fusion features, which comprises multi-source physical signal acquisition, suspected fault effective data separation and model detection; the application realizes accurate elimination of noise in the fault signal and screening of suspected fault effective data through CEEMDAN-PE-WTD denoising and multi-dimensional abnormality judgment mechanism, significantly reduces the misjudgment caused by noise; the application realizes accurate representation of fault related features through multi-modal fault feature extraction and capsule network deep fusion; the application provides sufficient and high-quality training data for the fault detection model by integrating real data and simulation data, and ensures the adaptability under complex and variable working conditions; the application realizes accurate evaluation of bearing fault types and fault probabilities through multi-source physical signal dynamic weight fusion and Gaussian mixture clustering analysis.
Owner:湘潭市工矿电传动车辆质量检验中心

Machine learning architecture for asset condition prediction

A method for generating a machine learning (ML) predictive model for a monitored target utility asset is disclosed. The method includes obtaining historical sensor reading data associated with the target utility asset from one or more historical sensor reading databases and filtering the historical sensor reading data to separate non-relevant data that is anomalous with respect to operation of the target utility asset from relevant historical sensor reading data. The method further includes clustering the relevant historical sensor reading data to identify historical sensor reading data that is relevant to other utility assets that have been identified as being similar to the target utility asset and generating at least one ML predictive model using the clustered relevant historical sensor reading data, the at least one ML predictive model configured to determine at least one predicted future condition of the target utility asset accordingly.
Owner:HITACHI ENERGY LTD

Bridge health monitoring data separation method based on improved VMD

PendingCN121636921AArtificial lifeAlgorithmComposite adaptation
The invention discloses an improved VMD-based bridge health monitoring data separation method, which is used for solving the problems that a VMD needs to manually decompose a K value and the decomposition effect is poor, and comprises the following steps: firstly, obtaining an original time data sequence from a health monitoring platform, obtaining a population initial position required by iteration through Chebyshev mapping, and obtaining a decomposition number K value and an adjustment parameter alpha value; then, according to the initially determined parameters, decomposing the original time data sequence by adopting VMD to obtain a plurality of modal component sequences IMF; meanwhile, optimization iteration is continuously performed through a piebald optimization algorithm, and the advantages and disadvantages are measured based on a composite fitness function proposed by the method after each iteration solution. And finally, determining an optimal parameter set through continuous iterative calculation and composite fitness function value comparison, and obtaining a time sequence of each component after decomposition. According to the method, automatic and accurate decomposition of bridge health monitoring data can be realized, and an effective tool is provided for analyzing bridge response caused under the action of a single factor.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Database optimization method for querying last position of historical region of vehicle based on Internet of Things

The invention discloses a database optimization method for querying the last position of a historical region of a vehicle based on the Internet of Things, and relates to the field of database management, and the method comprises the following steps: obtaining vehicle data information; respectively matching corresponding storage schemes according to data types of the obtained vehicle data information, and constructing a time sequence database, a document database and a column type storage library according to storage results; carrying out storage logic optimization processing on the obtained vehicle data information, carrying out cold and hot data separation optimization processing on the vehicle data information stored in a database, and carrying out storage according to an optimization processing result; obtaining vehicle query information, obtaining corresponding query factor information according to the vehicle query information, carrying out hybrid optimization processing on each query factor information, and obtaining corresponding index combination information; obtaining vehicle data information meeting requirements in a database according to the index combination information, and generating a corresponding retrieval query result; according to the method, the data storage and query performance in the database is improved.
Owner:SHENZHEN WODAFU TECH CO LTD