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78results about How to "Overcome consistency" patented technology

Method for segmenting HMT image on the basis of nonsubsampled Contourlet transformation

The invention discloses a method for segmenting HMT images which is based on the nonsubsampled Contourlet transformation. The method mainly solves the problem that the prior segmentation method has poor area consistency and edge preservation, and comprises the following steps: (1) performing the nonsubsampled Contourlet transformation to images to be segmented and training images of all categories to obtain multi-scale transformation coefficients; (2) according to the nonsubsampled Contourlet transformation coefficients of the training images and the hidden markov tree which represents the one-to-one father and son state relationship, reckoning the model parameters; (3) calculating the corresponding likelihood values of the images to be segmented in all scale coefficient subbands, and classifying by examining possibility after integrating a labeled tree with a multi-scale likelihood function to obtain the maximum multi-scale; (4) updating category labels for each scale based on the context information context-5 model; and (5) with the consideration of the markov random field model and the information about correlation between two adjacent pixel spaces in the images to be segmented, updating the category labels to obtain the final segmentation results. The invention has the advantages of good area consistency and edge preservation, and can be applied to the segmentation for synthesizing grainy images.
Owner:探知图灵科技(西安)有限公司

Method for detecting sensitive information based on D-S evidence theory

The invention relates to a method for detecting sensitive information of an e-government system. Various detection algorithms, including the detection algorithm based on a regular expression model, the detection algorithm based on a vector space, the detection algorithm based on a boolean model and the detection algorithm based on a probability model are fused in the method for detecting the sensitive information based on a D-S evidence theory. The D-S evidence theory is firstly utilized to fuse the values of different keywords in the same query acquired by the algorithms, and then is utilized to fuse the trust values acquired by different algorithms, thereby acquiring a sensitive degree of an information detection object. According to the method for detecting the sensitive information based on the D-S evidence theory provided by the invention, the advantages of the algorithms in the information detection of the e-government system are comprehensively utilized, the problems of the lowrecall ratio and precision ratio of a single algorithm and the inconsistency problem of detection results between different algorithms are solved, and the sensitive information in the e-government system is efficiently prevented from being stored and revealed in a level-skipping form.
Owner:THE PLA INFORMATION ENG UNIV

Grassland biomass remote sensing inversion method considering grassland height factor

The invention discloses a grassland biomass remote sensing inversion method considering a grassland height factor. According to the method, a statistical model among the grassland height, the vegetation index and the grassland biomass is established with a multi-element stepwise linear regression analysis method according to research area ground survey point data, inversion calculation is performed on research area remote sensing image data on the basis, and the grassland height variable is acquired through the grassland type, NDVI (normalized differential vegetation index) and DEM (digital elevation model) inversion. The method has the advantages that the grassland height factor is added to a grassland biomass inversion model, so that the grassland biomass remote sensing inversion accuracy can be increased, the defect that traditional vegetation index model methods lack consistency and stability for grassland in different forms can be overcome, and the method is reliable and has the practical value.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI

Multifunctional and multilingual input system for numeric keyboard and method thereof

InactiveCN101008864AOvercoming multiple enginesOvercoming multiple coding systemsSpecial data processing applicationsTelephone set constructionsMulti languageComputer module
This invention relates to one digital keyboard multi-function and multi-language input system and method, which adopts Unicode to make each language character computer inner codes and output layer to get integration to realize input, translation and computation functions. The invention system comprises input module, judgment module, conversion module, word automatic cut module, prediction module, association module, translation module, computation module, telephone number module and word generation module connected by standard application programs.
Owner:北京优耐数码科技有限公司

Automatic inner wall spraying device for round cup-shaped injection molding products

The invention discloses an automatic inner wall spraying device for round cup-shaped injection molding products. The automatic inner wall spraying device comprises a rotary workbench (1), a base (12), a motor (13), an air cylinder (2), a cantilever (3), a spray gun (31), a bracket (23), a PLC (Programmable Logic Controller) (4), an electromagnetic valve (5) and a frequency-conversion speed regulator (6). According to the invention, the device consisting of the rotary workbench, the motor, the air cylinder, the cantilever, the spray gun, the PLC, the electromagnetic valve and the frequency-conversion speed regulator is adopted; and when the automatic inner wall spraying device works, the round cup-shaped product is clamped on the rotary workbench and driven by the motor to rotate at a constant speed, the air cylinder drives the cantilever to carry the spray gun to be inserted into a cavity of the round cup-shaped product to spray up and down at a constant speed, and the PLC controls the spray gun to be started and stopped through the electromagnetic valve and controls the air cylinder to act up and down. Due to the technical scheme that the frequency-conversion speed regulator controls the rotating speed of the motor, the inner wall of the round cup-shaped injection molding product is sprayed to reach the purposes of keeping consistency of quality, reducing cost, improving efficiency and reducing waste.
Owner:NINGBO HUABAO PLASTICS & RUBBER MOLD

Method for preparing large powder metallurgy TZM blank with uniform carbon and oxygen distribution

The invention discloses a method for preparing a large powder metallurgy TZM blank with uniform carbon and oxygen distribution, which comprises the following steps of: 1, weighing raw materials; 2, mixing powder, namely mixing the weighed four raw materials twice under vacuum or the protection of inert gas, mixing titanium hydride powder, zirconium hydride powder and carbon black powder to prepare mixed powder, adding a volatile organic solvent into the mixed powder, uniformly stirring to prepare suspension, adding the weighed molybdenum powder into the suspension for uniform mixing, and adding residual molybdenum powder for uniform mixing; 3, performing cold isostatic pressing; and 4, sintering by keeping the temperature at stages, namely adopting a vacuum sintering furnace and sintering at three stages, wherein the process comprises the following steps of: raising the temperature at the first stage, raising the temperature at the second stage, and sintering at high temperature. The preparation method has the advantages of reasonable design, simple and convenient operation, and good using effect. The carbon content in the center and on the surface of the prepared larger-size TZM blank can be controlled to be approximately consistent, and the oxygen content in the center and on the surface of the TZM blank also can be reduced to a lower level.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH

Method for segmenting gray scale image based on multi-objective particle swarm optimization algorithm

ActiveCN104156945AQuality improvementOvercome the single evaluation indexImage analysisImaging processingFeature extraction
The invention discloses a method for segmenting a gray scale image based on the multi-objective particle swarm optimization algorithm, relates to the technical field of image processing, and mainly solves a problem that a traditional method is single in evaluation index, has high possibility of leading poor consistency of regions, and is disordered in edge. The method comprises the following steps: (1) extracting characteristics of a gray scale image to be segmented, namely selecting a gray scale of the image as data for a cluster to be clustered; (2) setting an operating parameter and initializing a particle swarm; (3) performing multi-objective clustering on the data combining the multi-objective particle swarm optimization algorithm to obtain a solution set approximate to Pareto; (4) selecting a solution with the largest PBM index from the solution set obtained in the step (3) as the optimal solution, namely a clustering result; (5) allocating a clustering mark to each pixel of the image to be segmented according to the clustering result obtained in the step (4) to obtain a segmenting result. The method has the advantages that the consistency of regions is good according to the segmenting result, complete information can be reserved, and the computing speed is quick, and can be used for image target identification.
Owner:XIDIAN UNIV

Method for manufacturing high-power white light LED

The invention discloses a method for manufacturing a high-power white light LED, comprising the following steps: electroplating silver or aluminum on a ceramic substrate 1 to cover a solid crystal region and print a circuit; b, injecting the silver to a pore path of the ceramic substrate 1 to connect a radiation heat sink 2; c, fixing a wafer 3 by using a silver glue and welding a connection circuit by using a gold wire 4; d, placing a porous metal template 5 on the ceramic substrate 1; e, injecting silica gel fluorescent powder into each pore path 51 of the metal template 5 and covering the wafer 3 and the gold wire 4; f, baking the silica gel; g, taking the metal template 5 out to form a plurality of fluorescent silica gel layers 6; h, covering the other metal template on the fluorescent silica gel layers 6 and injecting the silica gel into a hemisphere concave cavity of the metal template; and i, baking the silica gel to form a silica gel lens 7 and cutting the silica gel lens after demoulding. The method solves the problem of bad consistency and yellow ring of the high-power white light LED and realizes evenness of the coating of the fluorescent powder without needing a special customized wafer.
Owner:JIANGSU WENRUN OPTOELECTRONICS

Double machine switching method and system

ActiveCN101340272AOvercoming the need for dual-machine data synchronizationOvercome consistencyError preventionData synchronizationComputer design
The invention discloses a dual-computer switching method and a system thereof, wherein, the method comprises the following steps: public data of a main computer and a standby computer is put in a share database; a database table is preset in the database; the database table has two records which represent running state of the main computer and the standby computer respectively; the records in thedatabase table are checked according to a preset cycle to confirm the running state of the two computers, and the two computers are automatically switched according to the running state recorded in the database table. The method and the system overcome the problem that the data is synchronous and inconsistency in traditional dual-computer design technology; and a hardware DOG card is not needed any more, thus saving investment.
Owner:ZTE CORP

Paddy field floating granule as well as preparation method and application of paddy field floating granule

The invention discloses paddy field floating granule as well as a preparation method and application of the paddy field floating granule. A processing preparation of slow-released floating granule is adopted by utilizing a modern mechanized processing process; the paddy field floating granule is prepared by taking a paddy rice striped rice borer prevention and treatment agent, fertilizer and a plant growth regulator as main effective components, adding auxiliary materials including a water-surface floating carrier, a binding agent, a dispersant, a slow releasing agent and the like, and compounding. In a utilization process of the paddy field floating granule provided by the invention, soil does not need to be blended and the paddy field floating granule is directly broadcasted; a medicament can be slowly released, is uniformly distributed in a paddy field and has the effects of killing striped rice borers, strengthening seedlings, and adjusting the growth of paddy rice; the paddy field floating granule has the effects of increasing the yield and improving the quality of the paddy rice, and reducing the labor intensity caused by independent application of the fertilizer and the plant growth regulator.
Owner:DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD

Observation device and method

The invention relates to the filed of precise agricultural research, and discloses an observation device and method. The device comprises a movable device and an observation scaffold (5) with adjustable height, wherein the observation scaffold (5) with adjustable height is fixed on the movable device; the movable device is provided with a storage battery at the side opposite to the observation scaffold (5); the observation scaffold (5) comprises a support frame (3); an arc-shaped track (8) with an adjustable azimuth angle and an adjustable zenith angle is arranged on the observation scaffold (5); the arc-shaped track (8) comprises an instrument platform (10) which can carry a plurality of different sensors; and the observation scaffold (5) is provided with a hydraulic jack (2). In the invention, by means of omnibearing and multi-angle movements of different sensors on the arc-shaped track, tridimensional spatial information of a same target ground object can be continuously collected.
Owner:NONGXIN TECH BEIJING CO LTD

YIG harmonic oscillator, YIG oscillator and manufacturing methods thereof

The invention discloses a YIG harmonic oscillator, a YIG oscillator and manufacturing methods thereof; the YIG harmonic oscillator comprises a coupling ring and YIG monocrystals which are deployed in the coupling ring, wherein the coupling ring is a coupling ring which is deployed in a multi-layered ceramic substrate according to a preset coupling type through a low-temperature co-fired ferrite process; and the YIG monocrystals are inlaid in the coupling ring and sintered together with the coupling ring through an LTCC process. The YIG harmonic oscillator overcomes the defects of poor consistency, poor precision and the like in the manual winding of the coupling ring, and ensures the consistency and the precision of coupling ring manufacturing.
Owner:中国电子科技集团公司第九研究所

High-speed main shaft electromagnetic type on-line dynamic balancing method

The invention discloses a high speed main shaft electromagnetic type on-line dynamic balance method. The method comprises the following steps: adopting independent static magnetic fields which are produced in parallel in axial direction; and installing sleeves with a lug boss at the shaft segment part of each corresponding magnetic field so as to ensure each static magnetic field to generate an electromagnetic force caused by non-uniform air gaps and the magnitude change of the electromagnetic force is affected by the magnetic field strength and the direction thereof is the same as the direction of the lug boss, thereby overcoming the problem that the direction change of the electromagnetic force can not be accord with the rotating speed because of the over-high rotating speed in traditional electromagnetic balance method. By adjusting the current magnitude of each coil winding in the balance device, balance force with any magnitude (in the predesigned range) and any direction can be achieved. The balance method has the advantages of simple balance device structure, convenient processing and installation, wide dynamic balance speed range and short response time, and can realize timely and effective high speed main shaft on line dynamic balance compensate effect.
Owner:XI AN JIAOTONG UNIV

Production of magnesium-based hydrogen-storage material under equalized strong magnetic field and its producer

The present invention relates to the preparation process and device of Mg-based hydrogen storage materials in homogeneous high magnetic field. In this process metal powder is mixed as the designed chemical composition, dispersed by ultrasonic, dried, compacted and fragmented; then it is placed in the reaction kettle that is vacuumized and charged with hydrogen; then in homogeneous high magnetic field of 1-14T it is heated to 400-750DEG C slowly and the temperature is preserved, the hydrogen storage alloy is obtained after cooling. The special device in the present invention features that it includes generating system of homogeneous high magnetic field and reaction kettle for high temperature and pressure. This invention decreases the dehydriding temperature of the Mg-based hydrogen storage material while increases its absorbing and releasing rates of hydrogen.
Owner:SHANGHAI UNIV

Huaman plasma DNA quantitative analyser

The present invention relates to a quantitative detection analysis method of human plasma DNA level. Said method includes the following steps: selecting artificially-synthetic exogenous DNA series whose extraction efficiency is identical to or similar to that of human plasma DNA, but they are non-homologous, selecting housekeeping gene beta actin as determination gene, inserting artificially-synthetic exogenous DNA into carrier pMD18T and placing it in the bacteria to make culture, making blue and white spot screening, colony PCR identification, enzyme-cutting into linearity, placing the above-mentioned material into plasma, adopting double fluorescent quantitative gene amplification, fluorescent groups are respectively FAM and HEX, extracting known exogenous positive plasmid recovery efficiency, using computation formula to make computation so as to obtain the quantity of plasma DNA.
Owner:潘世扬

A self-compensating concrete-integrated strain gauge

The invention discloses a self-compensating concrete integrated strain gauge, which is mainly characterized in that a compensation resistor is provided on the strain gauge, the compensation resistor and the working piece form a half-bridge or full-bridge working mode, and the compensation resistor adopts a high-precision resistor with no stress output Or small grid strain gauges, which can automatically compensate the influence of temperature on the bridge and wires, overcome the difficulty that it is impossible to equip each measuring point with a compensation block and ensure that its temperature and change are consistent; it can also eliminate the influence of wire length on detection sensitivity At the same time, the reinforced fiber insulation base and flexible waterproof sealing material are used to carry out the overall waterproof sealing treatment, which not only ensures the technical requirements of the insulation resistance of the strain gauge, but also has the effect of convenient, fast, accurate and safe on-site installation. .
Owner:陈彦平

Polarimetric SAR image classification method based on strip waves and convolution neural network

The invention discloses a polarimetric SAR image classification method based on strip waves and a convolution neural network, and mainly solves a problem that a polarimetric SAR is low in image classification precision in the prior art. The method comprises the following specific steps: (1), inputting a polarimetric SAR image; (2), extracting Pauli decomposition features; (3), constructing a characteristic matrix; (4), selecting a training sample and a test sample; (5), building an initial matrix; (6), initializing the convolution neural network; (7), training the convolution neural network; (8), testing the convolution neural network; (9), carrying out the coloring; (10), outputting a classification result image. Compared with the prior art, the method effectively improves the classification precision of the polarimetric SAR image.
Owner:XIDIAN UNIV

Automatic calibration method and device for printing of patient monitor

The invention relates to an automatic calibration method and device for printing of a patient monitor. The patient monitor printing method comprises the following steps of: detecting working state information of a printer, and acquiring the state information; determining the working state of the printer according to the working state information; sending out a sensing signal when the working state is idle, and sensing location mark information which is preset on printing paper to acquire the position information of the printing paper; determining whether the printing is deviated or not according to the acquired position information of the printing paper; regulating positions of a start point and an end point of a printing baseline when the printing is deviated; and printing monitor data when the printing baseline is regulated and the printing is not deviated. According to the automatic calibration method and device for printing of the patient monitor, the problem that errors exist between screen displayed data and printed data is solved, the printing drive current is reduced, and the service life of a thermal printing head is prolonged.
Owner:EDAN INSTR

Method for manufacturing aluminum nitride silicon tip and grids structure

The invention relates to a preparation method of an aluminum nitride conical tip and a grid conical tip structure thereof. The method comprises the following steps: a layer of aluminum nitride film grows on a clean silicon substrate or a layer of gold film is then deposited on the clean silicon substrate by a radio-frequency magnetic control sputtering method; the silicon substrate is then put in a focused ion beam etching system; when the vacuum degree reaches 5.5 multiplied by 5-10mbar, a 5kV electron beam high voltage is applied to observe and position the appearance of a sample; an ion beam source is applied, and a beam current is arranged; finally, an etching pattern is arranged finally, and the focused ion beam etching is implemented to the aluminum nitride film sample according to the etching pattern to obtain the aluminum nitride conical tip 3 structure or the grid conical tip structure. The length-diameter ratio of a single cone of the aluminum nitride conical tip 3 structure is between (3-30):1, the minimum curvature radius of the tip part is less than 20 nanometer, and the diameter at the bottom is 100 nanometer to few microns. The invention can prepare the aluminum nitride conical tip and the grid conical tip structure thereof with controllable length-diameter ratio, omits a plurality of working procedures of depositing an insulating layer, photoetching, and the like which are necessary in the traditional process and has simple process and low cost.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

Container formation storage battery cooling apparatus and cooling operation method

The present invention discloses a container formation storage battery cooling apparatus and a cooling operation method. A purpose of the present invention is to solve the defects of the poor cooling effect and non-uniform cooling effects on different batteries of the existing container formation storage battery cooling water tank. The container formation storage battery cooling apparatus comprises a cooling tank, wherein the bottom surface of the cooling tank is provided with a water inlet hole and a water outlet hole, the water inlet hole is connected with a water inlet pipe, the water outlet hole is connected with a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively provided with a water inlet electromagnetic valve and a water outlet electromagnetic valve, a temperature detection device is arranged in the cooling tank, the bottom of the cooling tank is provided with a plurality of pulse gas blowing holes, each pulse gas blowing hole is connected with a pulse gas blowing pipe, each pulse gas blowing pipe is provided with an electromagnetic pulse control valve, the water inlet electromagnetic valve, the water outlet electromagnetic valve, the temperature detection device and the electromagnetic pulse control valve are electrically connected with a controller. With the cooling apparatus, the battery cooling effect is good, the uniformity of the cooling effect on different batteries in the cooling tank is good, the service life of the storage battery is prolonged, and the product quality is ensured.
Owner:CHAOWEI POWER CO LTD

Orange peel breaking and tearing mechanism for citrus peeling machine

The invention discloses an orange peel breaking and tearing mechanism for a citrus peeling machine. The orange peel breaking and tearing mechanism comprises a main shaft, a guiding device, elastic sheets, breaking and tearing blades and control blocks, wherein the main shaft is used for conveying citrus; the breaking and tearing blades are arranged on the elastic sheets; at least one elastic sheet is arranged; one breaking and tearing blade and at least one control block are arranged on each elastic sheet; and one end of each elastic sheet can be lifted along with the control blocks, so that the breaking and tearing blades are driven to puncture and tear orange peels. According to the orange peel breaking and tearing mechanism, to-be-peeled citrus can be punctured and torn, so that openings with required depths and quantity are obtained, successful tearing and curling of a next peeling process can be performed conveniently, the peeling effect is improved, the success rate of citrus peeling is increased, and the yield of the citrus is increased.
Owner:HANGZHOU PROJECT & RES INST OF ELECTRO MECHANIC & LIGHT IND

High-precision measurement method of scratch area and grayscale parameter of IC card chip

The invention brings forward a high-precision measurement method of a scratch area and a grayscale parameter of an IC card chip. The method comprises the following seven steps: before scratches are detected, a clean scratch-free electricity purchase card chip is acquired as a standard base graph through a CCD, another clean scratch-free electricity purchase card is taken and is inserted into a card slot for a plugging test, an electricity purchase card chip to be measured is scanned through the CCD, a comparison with the base graph is made, differences are analyzed, the differences are scratch information, the scratch information is analyzed by use of a certain algorithm, and thus the purpose of quantitative detection of the scratches is realized. The method provided by the invention has the following technical advantages: the problems of inconsistent man-eye observation and evaluation standards, large manual errors and the like can be overcome through the method, based on digital image processing, by use of a BLOB algorithm, the scratch area and the grayscale parameter are calculated, and scratch degree of the electricity purchase card is accurately and quickly analyzed in a quantitative mode.
Owner:STATE GRID CORP OF CHINA +1

Method and device of positioning and displaying active pen

The invention relates to an electronic inputting and displaying method, in particular to a method for positioning and displaying writing of an active pen. The method comprises the following steps of: S10 extracting a light spot image of the active pen and binarizing the light spot image to obtain a target image; S20 calculating by using an SUSAN operator to obtain a first stroke coordinate of the active pen; S30 converting the first stroke coordinate to a screen displaying position coordinate and sending to a computer; and S40 controlling a projector to display the writing track of the active pen by using a computer according to the displaying position coordinate. The method in the invention overcomes the defect that the contact position of the active pen is inconsistent with the screen displaying position. Furthermore, the invention also discloses a positioning and displaying device of the active pen.
Owner:GUANGDONG VTRON TECH CO LTD

Automatic test apparatus for friction voltage

The invention discloses an automatic test apparatus for friction voltage, comprising a stand and a test device. A pedestal is arranged on the lower part of the stand; the stand is provided with a friction device for performing friction on tested samples on the pedestal; the friction device comprises a friction member in contact friction with the tested samples on the pedestal, and a first driving mechanism for driving the friction member to move; the test device is used for testing friction voltage of the friction member, generated on the tested samples, and comprises a static test instrument and a second driving mechanism for driving the static test instrument to move; and the friction device and the test device are connected with a control device for controlling the actions of the friction device and the test device. The automatic test apparatus realizes the full automation of a friction electrification portion and the test device, and ensures the accuracy and repeatability of a test result as well.
Owner:SHENZHEN SELEN SCI & TECH CO LTD

Steel cable towed type three-dimensional parking garage

PendingCN107558778ANormal even winding and unwindingOvercome efficiencyParkingsFailure rateWinch
The invention discloses a steel cable towed type three-dimensional parking garage. The steel cable towed type three-dimensional parking garage comprises a main frame, a vertical lifting transmission device arranged on the main frame, and a horizontal moving system arranged outside the main frame, wherein the vertical lifting transmission device is a winch lifting system, steel cables wound on a winch is connected with a vehicle bracket through a steel cable anti-breakage braking and limiting mechanism, and the connecting part between the winch and the steel cables is provided with an anti-tangling mechanism. The steel cable towed type three-dimensional parking garage overcomes the defects of low working efficiency, high fault rate, poor synchronous property and cost waste of three-dimensional parking garages in the prior art, and through the anti-breakage braking mechanism, the anti-tangling mechanism, and an anti-shaking mechanism, improves safety and stability and ensure normal and uniform pay-off and take-up of the steel cables.
Owner:福建三铭科技有限公司

Electron beam strand coaxial fuse wire deposition forming method

ActiveCN110125401AShorten the development and production cycleOvercome Forming GeometryAdditive manufacturing apparatusIncreasing energy efficiencySlice thicknessMotion parameter
The invention relates to an electron beam strand coaxial fuse wire deposition forming method. The method comprises the steps that on the basis of three-dimensional modeling software, a component three-dimensional model is constructed and converted into an STL format file to be input into an electron beam rapid forming system; data processing software conducts layering slicing treatment on the component three-dimensional model which is in the STL format, and the thickness of each slice layer is set; based on an electron beam fuse wire machining method and each slice layer, the filling path andthe filling angle of each slice layer are generated to serve as the fuse wire deposition forming stacking path; electron beam current parameters, wire feeding parameters and motion parameters are input into the electron beam rapid forming system, the electron beam strand coaxial fuse wire deposition forming machining procedure is generated, metal wire and electron beam current coaxial conveying needs to be kept in the forming process, and a metal wire is melted and continuously stacked under the action of the electron beam current. According to the stacking method, layer-by-layer fuse wire deposition is conducted according to the fuse wire deposition forming stacking path till a component conforming to the three-dimensional model is formed.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST

Wave-transmitting composite material half cover and preparation method thereof

The invention discloses a wave-transmitting composite material half cover. The half cover comprises a shell skin, annular ribs, longitudinal ribs, a front end flange reinforcing area and a rear end flange reinforcing area; the shell skin is of a hollow truncated cone structure; the annular ribs are circumferentially arranged on the inner wall of the shell skin and are axially arrayed along the shell skin; the longitudinal ribs are arranged on the inner wall of the shell skin along the axial direction of the shell skin and are arrayed along the circumferential direction of the shell skin; the front end flange reinforcing area is annular and is coaxially arranged at one side with a smaller radius of the shell skin; the rear end flange reinforcing area is annular and is coaxially arranged atone side with a larger radius of the shell skin; and the shell skin, the annular ribs, the longitudinal ribs, the front end flange reinforcing region and the rear end flange reinforcing region are allformed by laying a plurality of layers of fiber and resin composite material, wherein the volume fraction of fibers in the fiber and resin composite material is 57-63%. A plurality of groups of the annular ribs and a plurality of groups of the longitudinal ribs are respectively arranged on the circumferential direction and the axial direction of the inner wall of the half cover, so that the halfcover has excellent mechanical properties. The invention also discloses a preparation method of the wave-transmitting composite material half cover.
Owner:长春长光宇航复合材料有限公司

Permanent magnet motor robust optimization design method considering uncertainty of magnetic material

The invention discloses a permanent magnet motor robust optimization design method considering uncertainty of a magnetic material. The method comprises the following steps: determining a motor design demand; performing initial design on a motor according to design requirements, and determining design parameters and to-be-optimized performance; constructing a motor robust optimization model considering uncertainty factors of a magnetic material, setting relevant parameters such as residual magnetism, magnetization direction and size of the permanent magnet material into a random number set obeying a certain distribution rule by the model, and setting expectation and standard deviation of motor performance as design targets; solving a robust multi-objective optimization model by using an evolutionary algorithm and an agent model; determining a processing scheme after evaluating the motor performance. According to the design method of the permanent magnet motor, potential influences of uncertain factors existing in material characteristics and later processing of the magnetic material on the performance of the motor are considered in the design stage, the robustness of the design scheme of the permanent magnet motor is improved through the design means, and the problems that a traditional design method of the permanent magnet motor is poor in prototype and design consistency and the like are solved.
Owner:JIANGSU UNIV

Data migration method and system, storage medium, and electronic device

ActiveCN109063005AOvercoming the disadvantages of strong dependenciesOvercome Checking EfficiencySpecial data processing applicationsDatabase distribution/replicationRefluxData synchronization
The invention provides a data migration method, comprising the steps of data migration preparation, data reflux, data patch generation and data migration completion judgment. The invention also relates to a data migration system, a storage medium and an electronic device. The invention overcomes the shortcomings of strong dependence of the import and export tools, adopts the data synchronous return tool of the data warehouse, overcomes the shortcomings of checking efficiency or feasibility, and the data consistency can not be strictly ensured by successful checking: the invention adopts line-level field-by-field comparison, and the data consistency can be ensured by successful checking. Overcomes the shortcomings of not being able to check out the discrepancy data and abnormal reasons, andavoids the repeated consumption of process time. The present invention overcomes the shortcomings of DBA manual operation, low efficiency and possible human error, and the migration flow can be executed serially through the task tree of the data warehouse. The present invention realizes high efficiency and automatic data migration through the system.
Owner:ADVANCED NEW TECH CO LTD

Ignition coil testing system

The invention discloses an ignition coil testing system, comprising: a control unit, an environment simulation device, a signal generator, an oscilloscope, a temperature sensor, an air pressure sensor, a programmable DC power supply and an ignition coil; the temperature sensor and the air pressure sensor are arranged in the environment simulation device Inside; the ignition coil is installed in the environment simulation device, and the signal generator is respectively connected with the control unit and the excitation end of the ignition coil; the programmable DC power supply is respectively connected with the control unit and the primary coil of the ignition coil; the oscilloscope is respectively connected with the control unit and the ignition coil The ignition terminal connection. The present invention and its preferred solution can simulate the environmental conditions of actual working conditions, and the conditions for triggering ignition can be adjusted flexibly, providing a comprehensive and perfect test platform for the development of ignition coils, thus overcoming the lack of consistency in existing test methods , unstable results, and defects that cannot meet development needs.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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