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134results about How to "Clear relationship" patented technology

PCA (Principle Component Analysis) model based furnace temperature and tension monitoring and fault tracing method of continuous annealing unit

The invention relates to a fault monitor and diagnosis method of a continuous annealing unit, in particular to a PCA (Principle Component Analysis) model based furnace temperature and tension monitoring of a continuous annealing unit, mainly comprising the following steps of firstly, according to process variable data obtained in the field, and establishing a temperature and tension monitor modelby utilizing a principle component analysis PCA method; secondly, establishing an off-line model and calculating the T2 statistics quantity and the SPE statistics quantity as well as contributed control limits thereof by utilizing the data, obtained in step one, when process variable is in a normal work condition; thirdly, applying an on-line model, calculating the T2 statistics quantity and the SPE statistics quantity of current data, monitoring whether a current state is normal or not according to information supplied by the off-line model, and giving alarm signals if abnormal; fourthly, determining a leading variable which causes a fault by utilizing contribution of the T2 statistics quantity and contribution of the SPE statistics quantity. The invention monitors the furnace temperature and tension in real time in the production process and traces back a fault reason for leading to system abnormality when the abnormality occurs.
Owner:SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE +1

Strip steel quality forecasting, furnace condition early-warning and fault diagnosis method based on partial least square

The invention relates to a strip steel quality forecasting, furnace condition early-warning and fault diagnosis method, in particular to a strip steel quality forecasting, furnace condition early-warning and fault diagnosis method based on partial least square, comprising the following steps: model selection: multiple models are adopted to describe the process characteristics of corresponding steel types; data preprocessing: data alignment based on the model is carried out, synchronization relation of process input and quality output is built and data dimensionless treatment is carried out to eliminate effect of process data on modeling precision owning to non-unity of physical units; an off-line model building; a PLS (partial least square) model for strip steel quality and process variable is built by utilizing a great amount of historical data in normal working conditions; determining control limit of an monitor-control index; determining variable quantity control limit; and on-line forecasting and on-line detection and fault diagnosis. In the invention, the model for the strip steel quality and the process variable is built by PLS algorithm, so as to realize real-time quality forecasting, process monitoring and fault diagnosis.
Owner:SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE +1

Bicircle shield soil chamber residue soil flow characteristic visual observational experiment system and method

The invention discloses a bicircle shield soil chamber residue soil flow characteristic visual observational experiment system which comprises a model soil box, a reduced scale bicircle shield tunneling machine excavation system simulation test device, a uniformly distributed load loading device and a PIV digital image processing system, wherein the model soil box is filled with transparent soil and is connected with the uniformly distributed load loading device after the upper cover is dismantled; the end, provided with a partition board, of the model soil box is connected with the reduced scale bicircle shield tunneling machine excavation system simulation test device; lasers are arranged above and on the side face of the model soil box respectively; a CCD camera is adopted to acquire an image, controls image acquisition through connection with a computer, and analyzes image data. The invention further discloses a method for carrying out an observational experiment by adopting the bicircle shield soil chamber residue soil flow characteristic visual observational experiment system. With adoption of the bicircle shield soil chamber residue soil flow characteristic visual observational experiment system, a residue soil flow field of the soil chamber and a soil body displacement field in front of an excavation face can be effectively observed to provide an excellent test platform for the soil body improvement effect and setting and control of soil chamber pressure; in addition, the system is safe, convenient and rapid to dismantle, high in testing accuracy and recyclable.
Owner:TONGJI UNIV

Information recommendation method and device based on knowledge graph, equipment and storage medium

The invention relates to the technical field of artificial intelligence, and discloses an information recommendation method and device based on a knowledge graph, equipment and a storage medium, and the method comprises the steps: obtaining initial data, recognizing the relationship between entities in the initial data, and constructing the knowledge graph; when a target customer is determined, extracting initial data of the target customer from the knowledge graph, constructing a sub-graph, then training a graph convolutional neural network GCN by adopting the sub-graph and a pre-constructedproduct feature vector, inputting product information data in basic data into the trained graph convolutional neural network GCN, and carrying out binary classification processing; and obtaining a selection probability of each product, selecting the corresponding product information data as to-be-recommended information according to the selection probability, and pushing the to-be-recommended information to the target client. The invention also relates to blockchain technology. Initial data is stored in the blockchain. According to the invention, the knowledge graph is constructed to improve the efficiency of information recommendation.
Owner:CHINA PING AN PROPERTY INSURANCE CO LTD

Mechanical system rime varying reliability evaluating method based on dynamic Bayesian network

The invention discloses a mechanical system time varying reliability evaluating method based on a dynamic Bayesian network. The mechanical system time varying reliability evaluating method comprises a first stage of determining model basic indexes, a second stage of structuring the structure of the Bayesian network and a third stage of updating a formula and the time varying reliability of a Monte Carlo simulation computer mechanical system according to Bayesian information. The mechanical system time varying reliability evaluating method has the advantages that a knowledge diagrammatic expression method is provided through the Bayesian network, directed diagrammatic expression can be carried out on the cause and effect probability relation between node variables, and the cause and effect probability relation can be used for uncertain knowledge expression, cause and effect reasoning, diagnosis reasoning and the like. The weak link of the reliability of the system can be effectively recognized through reasoning of the Bayesian network; the relation between components in the mechanical system becomes more visual and clear through diagrammatic display, the dynamic Bayesian network technology is applied to evaluation of the time varying reliability of the mechanical system, the multiple states and failure correlation of the mechanical system are analyzed, and a theoretical support is provided for improving the performance and the reliability of the mechanical system.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Method for representing multiple graininess of text message

The invention relates to a text information representation method based on multi-granularity text features. In the method, multi-granularity text representation model training is used for generating a multi-granularity text model and integration, thus forming text information multi-granularity integration representation. The method solves the problem of the integration of multi-granularity text features based on overall weights and text local features. The text information representation method is very robust and stable in respect of corpus scale and sparse data. The semantic structures implied in the text can be accurately and fully represented through acquiring the multi-granularity semantic space mapping of the text. The advantages of fine granularity text representation and coarse granularity text representation can be used comprehensively based on the relativity between the multi-granularity text features. Under the condition of training corpora with different scales, the text representation performance of the text information representation method is better than the representation performance of the single-granularity text representation method. Although the multi-granularity text representation method is in a multilayer structure, and the relations between the layers are clear, and the complex operations of a plurality of text representation methods in parameter adjustment are eliminated.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Visual observation testing system and method for flow characteristics of muck in soil chamber of single-circle shield

The invention relates to a visual observation testing system for flow characteristics of muck in a soil chamber of a single-circle shield. The visual observation testing system comprises a model soil tank, a simulation testing device of a excavation system of a reduced-scale single-circle shield, a uniformly distributed load charging device and a PIV digital image processing system, wherein transparent soil is contained in the model soil tank, the model soil tank is connected with the uniformly distributed load charging device after an upper cover is removed; one end, provided with a separation plate, of the model soil tank is connected with the simulation testing device of the excavation system of the reduced-scale single-circle shield, lasers are distributed above and on the side faces of the model soil tank, a CCD camera is used for acquiring images and is connected with a computer for controlling image acquisition and analyzing the image data. The invention further discloses a method for performing observation testing by adopting the system. According to the system and the method, visual environment is realized through the transparent soil, the transparent model soil tank, and the transparent shield tunneling machine model, and by utilizing the commercial PIV digital image processing system, the flow characteristics of the muck in the soil chamber and the deformation characteristics of the soil body in front of an excavation face when the simulation testing device of the excavation system of the reduced-scale single-circle shield tunnels are directly observed and recorded.
Owner:TONGJI UNIV

Graph database Neo4J interactive visualization operation method and system

The invention provides a graph database Neo4J interactive visualization operation method and system, and relates to the field of graph database interaction visualization. The method comprises the steps that a mouse is clicked to interact with a user interaction interface, a node creation request is initiated, a back end calls a newly-built node program in a node operation module, node creation operation is converted into a Cypher statement, the Cypher statement is executed, an execution result is returned to the user interaction interface, and a node is drawn at the click position; dragging the mouse to interact with the user interaction interface; obtaining a dragging start-stop node number; and initiating a new relationship request by taking the dragging start-stop node number as a parameter, calling a new relationship program in the relationship operation module by the back end, converting new relationship operation into a Cypher statement, executing the Cypher statement, returningan execution result to the user interaction interface, and drawing a relationship between the start node and the stop node. The method has the beneficial effects that the use threshold of the graph database Neo4J is reduced by clicking the button, dragging the icon, inputting the node name and other simple and easy-to-understand operations.
Owner:COMMUNICATION UNIVERSITY OF CHINA

Focused ion beam-electron beam fused controllable micro-nano machining method

ActiveCN105668514ASolve the problem of incomplete varietyPracticalNanostructure testingMicro nanoParticle physics
The invention discloses a focused ion beam-electron beam fused controllable micro-nano machining method, which is to obtain three-dimensional beam current density distribution of the ion beam and the electron beam respectively by comprehensively considering aberration and space charge effect of an actual system, and fuse the two beams according to the spatial layout of the system to synthesize a synchronous particle beam, so as to obtain high-precision two-beam fused controllable micro-nano machining. The method comprises the following steps: at first, obtaining parameters of a source, a lens, a deflector and a sample, and calculating two-dimensional fields, three-dimensional fields and electrical parameters of the lens and the deflector; then, under a given initial condition, solving Newton-Lorentz equation set to obtain ion (electron) beam three-dimensional beam current density distribution containing aberration and ion (electron) coulomb force effect; at last, under the condition of considering a two-beam system assembling structure, rotating the ion beam anticlockwise, fusing the ion beam and the electron beam under the coulomb force effect, so as to realize two-beam synchronous controllable machining. The method has the advantage that the machining precision and quality can be improved as the electron beam controls the ion beam current density distribution.
Owner:BEIHANG UNIV

Phase plane self-adaptation control method based on characteristic model

ActiveCN103224023AResolve delayMeet the requirements of different control precisionAircraft navigation controlEngineeringAngular acceleration
Disclosed is a phase plane self-adaptation control method based on a characteristic model. The method comprises the following steps: (1) a speed limit value in a jet control law is designed; (2) an angular speed maximum value of a stepped zone, an angular speed maximum value of a low thrust zone, a dead zone theta D and a stepped threshold value theta v in the jet control law are designed; (3) a high thrust zone threshold value theta B in the jet control law is designed; (4) a low thrust angular speed accelerated speed parameter ac2 and a high thrust angular speed accelerated speed parameter ac1 in the jet control law are calculated according to a golden ratio coefficient; (5) a stepped zone parameter kjj in the jet control law is calculated according to the low thrust angular speed accelerated speed parameter ac2, and a parabola coefficient KX in the jet control law is calculated according to the high thrust angular speed accelerated speed parameter ac1 and other phase plane parameters; (6) the controlled quantity is calculated according to parameters designed in the above-mentioned steps and a phase plane jet control logic, namely, the jet length of an engine is confirmed, and the engine is controlled within a sampling control period according to the confirmed control quantity.
Owner:BEIJING INST OF CONTROL ENG

Method, device and system of telecommunication service information processing

The invention relates to a method of telecommunication service information processing and a device and a system thereof. The method comprises that the register application of the telecommunication service is received; the service publishing and processing operation is performed to the telecommunication service; when the publishing of the telecommunication service is tested, the register application of the telecommunication service product is obtained; the product publishing and processing operation is performed to the telecommunication service product. A telecommunication service information processing device comprises a service register module, a service publishing module, a product register module and a product publishing module which perform the steps of the telecommunication service information processing method. The other telecommunication service information processing device comprises a service application module, a service state record module, a product generation module, a product application module and a product state record module. The telecommunication service information processing system comprises an operation business platform and a service provider platform. The invention is the two-stage information processing of the telecommunication service / telecommunication service product and can flexibly and roundly manage the present telecommunication service product.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD

Optimal planning and orderly quitting method for electric bus charging station

The invention provides an optimal planning and orderly quitting method for an electric bus charging station, and belongs to the technical field of electric bus charging stations, and the method comprises the steps: firstly building an electric bus charging station location and constant volume optimization model; determining a charging station configuration scheme meeting a charging peak period according to the location and constant volume optimization model; determining a charging station configuration scheme meeting a charging peak period according to the location and constant volume optimization model in combination with the charging station configuration scheme meeting the charging peak period; classifying the charging stations according to the charging station configuration scheme meeting the charging peak period and the charging station configuration scheme meeting the charging flat peak period; and based on the classification of the charging stations, performing energy storage configuration on each charging station so as to balance charging demand changes in a peak period and a flat peak period. According to the method, the planning and quitting problems of the electric bus fast charging station in the area where the charging demand suddenly increases and falls back in a short time are solved, and the problems of idleness and resource waste of the charging station after the charging demand falls back due to one-time planning are avoided.
Owner:BEIJING JIAOTONG UNIV +3
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