Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
60results about How to "Meet the requirements of engineering applications" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Fusion-deposition 3D printer and printing method thereof
The invention discloses a fusion-deposition 3D printer. The fusion-deposition 3D printer comprises a shell, a lifting mechanism and a composite extruding mechanism, wherein the lifting mechanism is mounted in the shell; the composite extruding mechanism comprises a machine cylinder, a screw rod and a long-fiber conveying pipe, a feeding pipe communicated with a material cavity of the machine cylinder is arranged on the side wall of the machine cylinder, the screw rod is rotatably mounted in the material cylinder and is provided with a mounting channel, and the upper and lower ends of the screw rod are communicated through the mounting channel; the long-fiber conveying pipe is inserted into the mounting channel and is provided with a conveying channel for conveying long continuous fibers; the conveying channel, the mounting channel and the material cavity are sequentially communicated. The invention further discloses a printing method of the fusion-deposition 3D printer. According to the fusion-deposition 3D printer and the printing method thereof, the long continuous fibers and printing materials packing the long continuous fibers are synchronously extruded to a working platform, so that the strength and surface flatness of a printed product are improved, and the machining efficiency is improved.
Owner:余金文 +1
Enhancement type analog predistortion linear power amplifier
InactiveCN101567667AImprove efficiencyImprove ACPRAmplifier modifications to reduce non-linear distortionHigh frequency amplifiersLinear power amplifierRadio frequency
An enhancement type analog predistortion linear power amplifier, including a signal splitter unit, a first main power amplifier, a predistortion generation unit, a delaying filter, a error power amplifier, a 3dB electric bridge, a control cell and a receiver, the input end of the signal splitter unit is a radio frequency input terminal port, the input end of the first main power amplifier and the first input end of the predistortion generation unit are respectively connected to the output end of the signal splitter unit, the first output end of the first main power amplifier is connected to the input end of the delaying filter, the second output end is connected to the second input end of the predistortion generation unit, the output end of the predistortion generation unit is connected to the input end of the error power amplifier, the control cell controls every device, the output ends of the delaying filter and the error power amplifier are connected to the input end of the 3dB electric bridge, and the output end of the 3dB electric bridge is a radio frequency output terminal port. The enhancement type analog predistortion linear power amplifier provided by the invention has the advantages of improved ACPR, self-adapting function, considerably improved integral efficiency of power amplifier, thereby totally meeting the applied request of engineering.
Owner:FUJIAN SUNNADA TECH CO LTD
Granular Schwertmannite and its preparation method and use
InactiveCN103910402AMeet the requirements of engineering applicationsIncrease processing costOther chemical processesAluminium silicatesWater flowMaceral
The invention belongs to the field of environmental engineering and discloses granular Schwertmannite and its preparation method and use. The granular Schwertmannite comprises particles which are prepared by loading specific carriers with NaOH solution-modified biogenic Schwertmannite on carrier surfaces and have an average particle size of 4.06mm. The surface of the granular Schwertmannite is covered with reddish-brown Schwertmannite so that the granular Schwertmannite can maximumly contact with pollutants and can resist flow-velocity dynamic water flow impact. The surface of each zeolite is loaded with about 3.7mg of Schwertmannite so that mineral high-adsorption performances can be maximumly used. The granular Schwertmannite has a pellet shape and is convenient for As recovery and regeneration.
Owner:周立祥
Method and apparatus for realizing dual-mode network energy-efficiency joint simulation
ActiveCN103354643AGood simulation accuracyImprove Simulation EfficiencyEnergy efficient ICTNetwork planningDual modeSimulation
The invention relates to the communication technology field and especially relates to a method and a system for realizing dual-mode network energy-efficiency joint simulation. The method comprises that simulation parameters are set and comprise at least a first predetermined amount of simulation time slices; aiming at every simulation time slice, energy-efficiency simulation of a first system network is carried out, mobile station states accessing the first system network are saved, the energy-efficiency simulation of a second system network is carried out and the mobile station states accessing the second system network are saved; based on the mobile station states accessing the first system network and the mobile station states accessing the second system network, a network energy-efficiency simulation result of every simulation time slice is obtained. The method provided by the invention is suitable for energy-efficiency simulation and evaluation of a dual-mode mobile network, has good simulation precision and high simulation efficiency, can satisfy requirements of engineered application and evaluate network energy-efficiency of different scenes, different business demands and different site selection and layout plans.
Owner:SHANGHAI HUAWEI TECH CO LTD
Identification and judgment method for switching into fault protection
InactiveCN106451378AVerify feasibilityVerify accuracyEmergency protective circuit arrangementsUltrasound attenuationWave shape
The invention discloses an identification and judgment method for switching into fault protection. A Prony analysis method is used for current waveform fitting and acquiring frequency, amplitude, attenuation factor and phase characteristic values of current components, criteria of switching into line fault protection are proposed by the aid of frequency, amplitude, attenuation factor and phase characteristic value parameters, and frequency domain characteristics of signals are identified. By the aid of a large number of simulation experiments, current waveforms of line no-load switching-in, single-phase fault and three-phase fault lines with fault distances of 10km, 50km, 90km, 100km, 200km, 300km and 400km are simulated respectively and fitted by the Prony analysis method, and frequencies, amplitudes, attenuation factors and phases of the current components are extracted. The criteria of switching into line fault protection are proposed by the parameters, and simulation results prove accuracy and reliability of the criteria.
Owner:LOGISTICAL ENGINEERING UNIVERSITY OF PLA
Diagnosis and compensation method for rigid spacecraft multi-reaction flywheel fault
InactiveCN109116739AAccurate estimateEasy to adjustSafety arrangmentsElectric testing/monitoringMathematical modelEngineering
The invention discloses a diagnosis and compensation method for a rigid spacecraft multi-reaction flywheel fault. According to method, attitude dynamics and kinematics mathematical models for the rigid spacecraft multi-reaction flywheel fault are established; a fault diagnosis unit is designed to detect and estimate an unknown fault; and a non-singular fast terminal sliding mode technology is adopted to design an active fault-tolerant control scheme on the basis of fault estimation information obtained from the fault diagnosis unit. With the diagnosis and compensation method of the invention adopted, the fault of a rigid spacecraft can be diagnosed and compensated when the rigid spacecraft has a multi-reaction flywheel fault, or the reaction flywheels of the rigid spacecraft are saturated;inertia uncertainty and the adverse effects of external disturbances on the system in a design process can be processed at the same time; and the fault diagnosis unit and the fault-tolerant controller are designed independently, and therefore, design complexity can be reduced, and the requirements of engineering applications can be better satisfied.
Owner:NANJING UNIV OF TECH
Novel core-shell structured biological filler and preparation method thereof
ActiveCN105597696AAdsorptiveFunctionalGas treatmentOther chemical processesActivated sludgeStrong acids
The invention discloses a novel core-shell structured biological filler and a preparation method of the novel core-shell structured biological filler. The filler is prepared from the following raw materials in terms of mass percent: 20 percent to 30 percent of activated sludge, 0.2 percent to 1 percent of antibacterial deodorizing agent, 15 percent to 25 percent of bamboo charcoal powder, 2 percent to 5 percent of iron oxide red, 8 percent to 15 percent of calcium oxide and 35 percent to 50 percent of silicate inorganic gel. The method comprises the following steps of mixing the activated sludge, the antibacterial deodorizing agent and 15 percent to 35 percent of the silicate inorganic gel in total quantity, and squeezing, granulating and drying the mixed materials to obtain aggregates; uniformly mixing the bamboo charcoal powder, the iron oxide red, the calcium oxide and the residual silicate inorganic gel to obtain a powder material; putting the aggregates onto a ball forming disk, and spraying the powder material and water at the same time along with the process of rotating the ball forming disk, wherein the water spraying quantity is 5 percent to 20 percent of the total mass of the raw materials; gradually wrapping the surface of the aggregates by utilization of the powder material so as to obtain a preliminarily-cured core-shell filler, and obtaining the novel core-shell structured biological filler after curing. The filler disclosed by the invention has the advantages of short biological startup period, strong acid / base buffering capacity and rapid biochemical reaction rate.
Owner:广东省南方环保生物科技有限公司 +2
Digital data acquisition device
ActiveCN101951024AFlexible settingsFlexible configuration configuration functionCircuit arrangementsDigital dataDigitization
The invention discloses a digital data acquisition device. The device comprises the following functional plugins: a power panel, an AC sampling panel, an FT3 panel, a CPU panel, a bus back panel, and a liquid crystal display panel, wherein the AC sampling panel is connected to an analogue voltage and current signal output by a traditional electromagnetic mutual inductor; the FT3 panel is connected to the digital signals acquired by an electronic voltage transformer and an electronic current mutual inductor; the CPU panel is used for processing sampled data, transmitting a sampled message and receiving an external IEEE1588 time tick message and a GMRP message, and transmitting equipment state alarm information through GOOSE at the same time; the bus back panel is connected to the plugins of the device and realizes bus communication between the panels; and the liquid crystal display panel is used for displaying the sampled data of the device, recording failure events and setting parameters. The device can realize whole-station sharing of the sampled data, can control the sampling synchronous error of the data to be lower than 1 microsecond at the same time, greatly improves the data sampling precision and improves the reliability and accuracy of protection over the whole station.
Owner:NARI TECH CO LTD +1
Outgoing light power monitoring method for ONU (Optical Network Unit) optical module
ActiveCN102420653ASolve the problem that the optical power sampling value cannot be maintained for a long timeLow costElectromagnetic transmissionOptical ModuleOptical network unit
The invention discloses an outgoing light power monitoring method for an ONU (Optical Network Unit) optical module. The method comprises the following steps of: judging an outgoing light power monitoring value through the light emitting state of a laser module; assigning the initial monitoring value in MCU (Microprogrammed Control Unit) as 0; and then obtaining a sampling value transmitted from a monitoring circuit; refreshing and storing a new monitoring value if the laser module emits light; and still keeping the previous monitoring value if the laser module does not emit light. Therefore, problems that false report of light power is caused by environment light and the traditional sampling keeping circuit cannot keep light power sampling value for a long time can be solved; and the requirements of engineering application are satisfied with high efficiency at low cost.
Owner:CHENGDU SUPERXON COMM TECH CO LTD
Aluminium base amorphous composite powder as well as preparation method and application thereof
The invention discloses an aluminium base amorphous composite powder, comprising the following four elements in atomic percent: 86-89.8% of aluminium, 5-7% of nickel, 5-7% of yttrium and 0.2-0.5% of carbon. The invention also discloses a mechanical alloying preparation method of the amorphous powder and an aluminium base bulk amorphous alloy obtained by adopting a powder consolidation forming method while the amorphous powder is utilized. A carbon element material with high thermal stability is doped, and reasonable composition proportion is adopted, thus thermal stability of the amorphous alloy is unprecedentedly improved, glass transition temperature and initial crystallization temperature are respectively adjusted and increased to 945K and 1063K, and an enhancement effect is obvious. The preparation method has a simple process and low cost, the prepared bulk amorphous alloy can guarantee performances of bulky amorphous alloys, and reliable technological parameters are provided for industrial production of the aluminium base amorphous alloy in future.
Owner:UNIV OF JINAN
Evaluating method for engineering applicability of fiber bragg grating strain sensor
The invention belongs to a measuring technology and especially relates to an evaluating method for engineering applicability of a fiber bragg grating strain sensor. The evaluating method comprises a functional test step and a durability test step. According to the evaluating method, the operation is convenient and fast. The evaluating method is characterized in that: specific to the practical engineering application, a real structure is adopted for performing experimental verification on the engineering applicability. Compared with a more mature and wide resistance strain gauge of the present engineering application, the evaluating method has the advantages that the engineering applicability is evaluated through the test, the technical maturity and the existing main problems of the fiber bragg grating strain sensor are deeply known, the reliable and effective data is supplied for improving the strain sensor, gradually increasing the technical maturity of the engineering application, guiding the fiber bragg grating strain sensor to an engineering practical stage from a laboratory stage, realizing the sensing engineering application capability, meeting the demand of the engineering application and monitoring the structural health on the basis of a sensor technology, and a powerful support is supplied to the wide engineering application of the fiber bragg grating strain sensor and the development of a monitoring sensing technology.
Owner:CHINA AIRPLANT STRENGTH RES INST
Traffic index prediction method and device based on sequence-to-sequence learning model
InactiveCN110619427AImprove forecast accuracyCharacterize non-linear changesForecastingNeural architecturesFeature vectorFeature extraction
The invention discloses a traffic index prediction method and device based on a sequence-to-sequence learning model. The method comprises the steps of obtaining a traffic index input time sequence; taking the traffic index input time sequence as an input object from the sequence to a sequence learning model, wherein the sequence-to-sequence learning model is composed of an encoder network and a decoder network, the encoder network is an LSTM network taking an LSTM unit as a basic cycle unit, and the decoder network is an LSTM network taking an LSTM unit as a basic cycle unit; performing feature extraction on the traffic index input time sequence by using an encoder network to obtain a time change feature vector; and processing the time change feature vector by using a decoder network, andtaking a traffic index output time sequence obtained by processing as a prediction result. According to the method, the prediction precision of the traffic index is improved, and the nonlinear changeof the traffic index can be better described.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Light-weight low-conductivity ablation shape maintaining heat-resistant coating and preparation and application thereof
InactiveCN110437737ASolve the problem of high temperature pneumatic scour heat protectionTo achieve the purpose of ablative dimensionalityPretreated surfacesSpecial surfacesEpoxyAcrylic resin
The invention belongs to the technical field of special coatings, particularly relates to a light-weight low-conductivity ablation shape maintaining heat-resistant coating and preparation and application thereof. The light-weight low-conductivity ablation shape maintaining heat-resistant coating is prepared from a component A and a component B which are packed separately, and the component A and the component B are mixed according to a certain proportion before spraying; the component A is prepared from the raw materials of organic silicon resin, epoxy resin, acrylic resin,light-weight low-conductivity nanometer filler, ablation shape maintaining filler, a solvent and an auxiliary agent; and the component B is prepared from an ammonia curing agent of 3%-5% of the mass of the component A. According to the heat-resistant coating, the heat conductivity coefficient is low, the density is low, the bonding strength is high, the purpose of ablation shape maintaining is achieved, the comprehensive performance is excellent, and the heat-resistant problem of high-temperature pneumatic scouring of aspaceflight product cabin body is effectively solved; and the heat-resistant coating is used for heat protection of a spaceflight product cabin body structure, and it is proved by tests that the performance indexes of the heat-resistant coating completely meet the requirements of engineering application of a certain spaceflight product.
Owner:贵州航天风华精密设备有限公司
Coal consumption calculating method of composite firing low heat value gas unit
InactiveCN101929684AImprove reliabilityMeet the requirements of engineering applicationsFuel supply regulationPower stationProcess engineering
The invention relates to a coal consumption calculating method of a composite firing low heat value gas unit. A coal consumption calculating system of a composite firing low heat value gas unit is additionally arranged between a site power station unit and a management system used for measuring data acquired by the system and power station economy. The coal consumption calculating system comprises a database module, a manually controlled on-line learning modeling module and an on-line coal consumption calculating module of the composite firing low heat value gas unit. In the invention, a nonlinear mapping relation of input and output is established by only using an artificial neural network without using a complex enthalpy entropy chart calculating program and setting hardware redundancy on a measuring point sensor of all data, and higher-accuracy power generation coal consumption can be calculated on line.
Owner:SHANGHAI JIAO TONG UNIV
Process for preparing high-compactness tungsten-copper alloy metal materials by utilizing tungsten powder
ActiveCN112359236AReduce energy consumptionSolve the difficulty of sinteringTransportation and packagingMetal-working apparatusCopper platingMetallic materials
The invention discloses a process for preparing high-compactness tungsten-copper alloy metal materials by utilizing tungsten powder. The process comprises the following steps: (1), dispersing the tungsten powder in copper-plating liquid, and pre-plating copper by adopting an electroless plating method; transferring the tungsten powder subjected to pre-plating of copper into CuSO4 acidic electroplating liquid and performing electro-plating of copper; and performing post-treatment after electro-plating so as to obtain tungsten-in-copper composite powder; (2), pouring the tungsten-in-copper composite powder prepared in the step (1) into a graphite mould, then putting the graphite mould in a discharge plasma sintering furnace, and then performing vacuumizing and pressurizing to obtain a sintered body; and (3), performing hot isostatic pressing resintering on the sintered body in the step (2), and finally obtaining the high-compactness tungsten-copper alloy with the compactness degree beingmore than 99.5 percent. The process disclosed by the invention has the disadvantages of difficult sintering of the tungsten-copper alloys and low compactness degree.
Owner:SHAANXI SIRUI ADVANCED MATERIALS CO LTD
Inserting pipe digitalized design and manufacture method
ActiveCN101169201AQuick measurementAccurate measurementFlanged jointsSpecial data processing applicationsComputer Aided DesignMeasuring instrument
The invention provides a digitalized designing and manufacturing method for an inserting pipe. The method includes firstly conduction determination of manufacturing and mounting data of the inserting pipe with a digitalized measuring instrument; converting the measured data into data needed for the computer aided design of the pipe manufacture; and then conducting computer aided design and manufacture of the inserting pipe. The proposal of the invention realizes the effective connection of digitalized measurement and digitalized design and manufacture, and considerably improves the manufacture precision and the yield rate, thereby shortening the manufacture period, lowering the manufacture cost and overcoming the defects of the prior low-performance inserting-pipe manufacture mode which contains artificial sampling, experience-based pipe producing and filed fitting.
Owner:WUCHANG SHIPBUILDING IND
Underwater high-precision hole forming method based on electrical discharge machining
The invention belongs to the technical field of electrical discharge machining, in particular to an underwater high-precision hole forming method based on electrical discharge machining, and aims to provide a method for forming a high-precision hole underwater under high irradiation conditions by electrical discharge machining, which can meet both requirements of the processing precision and processing speed. The method comprises the following steps: adjusting the process environment, setting rough processing parameters, performing rough processing twice, setting fine processing parameters, and performing fine processing twice. The invention has the advantages that: the rapid and high-precision hole processing is achieved by adopting the optimized electrical discharge machining parameters and the special design of the electrode scour hole, performing the rough processing twice and performing the fine processing twice. The processing depth of the threaded bottom hole is ensured, the degree of taper of the threaded bottom hole is reduced, and the risk that the screw tap is broken during the long-distance underwater tapping process is reduced. The smoothness of the processed surface is improved and a certain over-cut amount is provided, so that the processed threaded bottom hole can fully meet the requirement for engineering applications. The working current is increased to increase the speed of the electrical discharge machining.
Owner:QINSHAN NUCLEAR POWER
Method for calculating the composite stiffness of a main and auxiliary spring type composite material plate spring
InactiveCN109840387AImprove calculation accuracyMeet the requirements of engineering applicationsSpecial data processing applicationsElement analysisProgram calculation
The invention relates to a method for calculating the composite stiffness of a main and auxiliary spring type composite material plate spring. The calculation method comprises the following steps: firstly, calculating the bending stiffness of each cross section of a composite main spring and an auxiliary spring according to the mechanics of the composite, and deducing a calculation formula for thebending stiffness of each cross section of the composite main spring and the auxiliary spring through a formula; and then, based on the finite difference theory, a step of calculating the composite stiffness of the main and auxiliary springs of the composite material after the main and auxiliary springs work together is given, and deriving a calculation formula of the composite stiffness of the main and auxiliary spring type composite material plate spring. The calculation method provided by the invention not only provides a theoretical basis for the calculation of the composite stiffness ofthe main and auxiliary spring type composite material plate springs, but also is high in calculation precision and applicable to the calculation of the composite stiffness of the main and auxiliary spring type composite material plate springs with any section shapes. Besides, the calculation method is also suitable for programming calculation, the calculation speed is far higher than that of traditional calculation methods such as finite element analysis, the research and development period of the composite material plate spring can be remarkably shortened, and the research and development cost is reduced.
Owner:ZHEJIANG SCI-TECH UNIV
Infrared target detection method and device based on multi-feature fusion, equipment and medium
ActiveCN113822279AImprove target detection probabilityReduce false alarm rateImage analysisCharacter and pattern recognitionFeature fusionMulti feature fusion
The invention discloses an infrared target detection method and device based on multi-feature fusion, equipment and a medium. The method comprises the following steps: acquiring a detection target image; performing global threshold segmentation on the detection target image to obtain a binary image; performing connected domain marking on the binary image to obtain candidate targets; performing feature extraction on each candidate target, and performing filtering processing on each feature channel to obtain a feature component value of each candidate target; performing multi-feature fusion on the candidate targets to obtain a normalized feature vector; and judging whether the normalized feature vector reaches a detection threshold, if the normalized feature vector reaches the detection threshold, reserving the candidate targets, and otherwise, deleting the candidate targets. Aiming at the problems of low infrared image contrast, less target feature information and the like, multi-feature fusion processing is performed by mining multiple feature information of targets and clutters, and parallel processing is performed by using multiple feature channels, so that the target detection probability is improved, and the false alarm rate is reduced.
Owner:CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
Satellite navigation interference prevention method for seven-array-element antenna
PendingCN109283553APrevent inversionReduce computationSatellite radio beaconingComputer moduleArray element
The invention provides a satellite navigation interference prevention method for a seven-array-element antenna. A satellite navigation interference prevention system of a seven-array-element antenna is built. The built system includes an anti-interference signal processing model building module (1), an autocorrelation matrix calculation module (2) ), an optimal equation construction module (3), anadaptive iterative recursive module (4), and a weight updating module (5). According to the invention, with the adaptive iterative operation, the inverse operation of the input signal autocorrelationmatrix is avoided, so that that the computing load is reduced and a problem that the convergence speed and steady-state error of the traditional iterative algorithm cannot be satisfied at the same time is solved. The method is implemented clearly; the formula calculation is simple; the real-time calculation is realized; and the requirement of engineering application is met.
Owner:BEIJING INST OF REMOTE SENSING EQUIP
Shield construction soil discharge quantity real-time on-line measuring device with pin wheel device
ActiveCN102720510ARealize online measurementEffective regulationTunnelsMeasurement deviceOriginal data
The invention belongs to the technical field of shield construction engineering and relates to a shield construction soil discharge quantity real-time on-line measuring device based on a pin wheel device. The shield construction soil discharge quantity real-time on-line measuring device comprises the pin wheel device, wherein the pin wheel device is arranged at the soil outlet part of a spiral conveyer of a shield machine and is arranged in a plane vertical to the residue soil direction. The pin wheel device comprises a pin wheel, a pin wheel shaft, a left box body, a right box body and a shaft coupler, and the pin wheel shaft is connected with a rotary encoder through the shaft coupler. A control part is used for carrying out storage, preprocessing, integrating and display operation on original data, the cross section value of the soil outlet is integrated with the output speed of the rotary encoder by software, and the soil discharge quantity volume is obtained. The measuring device is applicable to conditions that the shield machine passes through humid soil layers with a certain viscosity, and the outlet soil of the spiral conveyor can form humid column bodies with a certain viscosity, the accurate and real-time measurement of the soil discharge volume is realized, the precision and the real-time performance of the original measuring method is improved, and the shield construction requirements are met.
Owner:上海地铁盾构设备工程有限公司
Fluorine-containing polymer superfine wax and modified polypropylene composite material and preparation method thereof
The invention provides a fluorine-containing polymer superfine wax and modified polypropylene composite material and a preparation method thereof. The fluorine-containing polymer superfine wax and modified polypropylene composite material is prepared from, by weight, 50-90 parts of polypropylene, 5-20 parts of fluorine-containing polymer superfine wax, 2-10 parts of a flow modifier, 2-10 parts of a solubilizer and 2-15 parts of glass fiber. Due to the fact that the fluorine-containing polymer superfine wax is organic polymer which can be easily bonded with a polypropylene interface, the compatibility is good. Meanwhile, due to the fact that the solubilizer is added, the good compatibility of the fluorine-containing polymer superfine wax with the glass fiber, the polypropylene and the glass fiber can be remarkably improved, the obtained composite material has the high mechanical performance, also has the high friction resistance and can be widely applied to manufacturing products with the requirement for high strength and high corrosion resistance.
Owner:QUZHOU UNIV
PC (polycarbonate) composite with high wear resistance and high strength and preparation method of PC composite
The invention provides a PC (polycarbonate) composite with high wear resistance and high strength and a preparation method of the PC composite. The composite comprises main raw materials as follows: bisphenol A PC, fluorine-containing polymer micronized wax, glass fiber, a solubilizer and a flow modifier. Firstly, the raw materials except the glass fiber are added to a mixer for sufficient mixing,then the mixed material and the glass fiber are added to an extrusion machine for blending extrusion and granulation, and finally, granules are added to an injection molding machine for injection molding. The adopted fluorine-containing micronized wax has smaller grain size, is an organic high-molecular compound, is easily dispersed in a PC matrix and keeps better compatibility and interfacial adhesion property with matrix resin. Meanwhile, with addition of the solubilizer, compatibility between the PC and the glass fiber and compatibility between the fluorine-containing micronized wax and the glass fiber can be remarkably improved, so that the prepared composite has good wear resistance and mechanical performance, and can be widely used for manufacturing products meeting requirements forhigh wear resistance, high strength and better toughness.
Owner:SICHUAN UNIV
Regulation and control system and method for effect of atmospheric temperature on power of combined cycle unit
InactiveCN106200416AReduce dependenceReduce power generationSimulator controlCombined combustion mitigationEngineeringGenerating unit
Owner:SHANGHAI JIAO TONG UNIV +1
An Accurate Algorithm for Measuring Cable Force by Frequency Method
ActiveCN105181200BAccurate calculationImprove calculation accuracyApparatus for force/torque/work measurementAcousticsBending stiffness
The present invention provides an accurate algorithm for measuring cable force by frequency method, comprising the following steps: obtaining the vibration signal of the cable; analyzing the signal to obtain the vibration frequencies f1, f2, ..., fn of the first n orders; determining the cable force The first relational function between the nth-order vibration frequency fn and the nth-order frequency fcn when only considering the geometric stiffness and the n-th-order frequency fbn when only considering the bending stiffness; determine the nth-order vibration frequency based on the first relationship function The second relational function between fn and the first-order frequency fc1 when only considering the geometric stiffness and the first-order frequency fb1 when only considering the bending stiffness; determine the third relational function between the frequency fc1 and the cable force T: T= F(fc1); calculate the cable force T based on the second relational function and the third relational function. The invention eliminates the influence of the bending stiffness on the vibration frequency by determining the relationship function between the vibration frequency of the cable and the geometric stiffness and bending stiffness, thereby accurately calculating the cable force of the cable and improving the calculation accuracy of the cable force.
Owner:SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
Shield construction soil discharge quantity real-time on-line measuring device with pin wheel device
ActiveCN102720510BRealize online measurementEffective regulationTunnelsMeasurement deviceOriginal data
Owner:上海地铁盾构设备工程有限公司
Naked eye 3D display method and device based on multilayer transparent liquid crystal screen
ActiveCN111565308AReal-time calculation Depth calculationEasy to calculateSteroscopic systemsInstrumentsDepth mapMaterials science
The invention discloses a naked eye 3D display method and device based on a multilayer transparent liquid crystal screen. The device comprises multiple layers of transparent liquid crystal screens. The method comprises the steps: monocular image depth map estimation and the depth-to-level conversion. The monocular image depth map estimation comprises the following steps: calculating depth information of part of video frames; performing association calculation to obtain a video frame with depth information, performing depth-to-level conversion according to the depth information in combination with consideration of distances among the multiple layers of liquid crystal screens and light attenuation among the screens, and correspondingly distributing object contents of different depths in theimage to each liquid crystal screen of the multiple layers of transparent liquid crystal screens for display, thereby realizing naked-eye 3D display. Based on the classical SFS algorithm principle, the calculation process of the method is optimized, the calculation speed of the method is increased, the calculated depth information is cut according to the characteristics of the liquid crystal multi-layer screen, depth calculation basically capable of calculating the image content in real time is achieved, and the requirements of engineering application are met.
Owner:JIANGSU AUSTIN OPTRONICS TECH
High-tension cable floater alarm method based on image processing
ActiveCN105825619AAccurate identificationMeet the requirements of engineering applicationsImage analysisAlarmsImaging processingMaster station
The present invention relates to the field of the digital image processing, specially relates to a high-tension cable floater alarm method based on image processing. The method comprises the following steps: image acquisition, high-tension cable detection, floater detection and alarm information automatic generation. The high-tension cable floater alarm method based on image processing is able to accurately identify the high-tension cable and the floater close to the high-tension cable through an intelligent camera supported on an iron tower, automatically push alarm information to a master station and satisfy the requirement of electric power companies on anti-broken system engineering application.
Owner:NANJING 55TH INSTION TECH DEV
Sability analysis method for composite integral air inlet channel
PendingCN113704873AImprove the defects with large errorsReduce mistakesGeometric CADDesign optimisation/simulationElement modelInlet channel
The invention belongs to the field of aircraft design strength, and particularly relates to a stability analysis method for a composite integral air inlet channel. The method comprises: 1, constructing a finite element model of the composite material integral air inlet channel, wherein the finite element model comprises an air inlet channel model and a force bearing component model connected with the air inlet channel; 2, determining analysis parameters of the finite element model; 3, determining a concerned part of the stability analysis of the composite material integral air inlet channel through linear buckling analysis; and 4, determining the instability critical load of the concerned part according to the load-strain relation obtained by the nonlinear analysis. According to the method, the defect that a traditional engineering method based on the linear theory is large in error can be effectively overcome, the nonlinear mechanical behavior of structural instability of the composite material integral air inlet channel is truly simulated, the structural instability part and the structural instability critical load are accurately determined, the error is small, and the requirement of engineering application can be met.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Engineering Applicability Evaluation Method of Fiber Bragg Grating Strain Sensor
Owner:CHINA AIRPLANT STRENGTH RES INST
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com