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132results about How to "Meet the actual needs of the project" patented technology
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Wind power station power projection method based on error statistics modification
InactiveCN102496927AOptimize forecast resultsMeet the actual needs of the projectClimate change adaptationSpecial data processing applicationsElectricityTerrain
The invention discloses a wind power station power projection method based on error statistics modification. The procedures adopted by the invention is that firstly, data pretreatment is performed, the projection and measured data and the statistical data of the wind power station are divided into a plurality of sample sets according to different terrain heights; secondly, the sample sets are used for the training of a wind power projection model so as to form a 24-hour output short-term forecast model of the wind power station, the error distribution condition of the power can be projected through analyzing the projected power value and measured power value so as to obtain the expected value of the power projection error of the wind power station; thirdly, the power projection value of the wind power station can be obtained according to the numerical weather prediction data, weather forecast data and the trained model; and finally, the final power modification value of the wind power station can be obtained through modifying the power projection value according to the projection error statistical calculation result of the wind power station.
Owner:CHINA ELECTRIC POWER RES INST +1
Fully-automatic multi-functional multi-mode integral bag making machine
ActiveCN102529150AWidely used valueSolve the singularityContainer making machineryFolded formFold-forming
The invention relates to a fully-automatic multi-functional multi-mode integral bag making machine which integrates centralized sealing, three-side sealing, four-side sealing, bottom adding, folding and self set-up, and zippers, and manufactures packaging bags with a plurality of functions and in a plurality of modes fully automatically. The fully-automatic multi-functional multi-mode integral bag making machine comprises a non-stop film connecting unreeling device, a splitting and folding forming frame device, a self set-up device, a front longitudinal sealing machine body device, a middle machine body device and a rear machine body device; and the devices are sequentially connected in order. According to the fully-automatic multi-functional multi-mode integral bag making machine, all functions of existing various automatic bag making machines can be realized, the price is relatively lower, the integration is high, manpower, equipment, power and oil are saved, the efficiency is high, and the bag making machine has higher practicality.
Owner:GUANGDONG ZHONGBAO MACHINE
Two-stage scheduling method of parallel test tasks facing spacecraft automation test
InactiveCN104239213AEasy to callEasy to handleConcurrent instruction executionSoftware testing/debuggingColoring problemDegree of parallelism
The invention relates to a two-stage scheduling method of parallel test tasks facing a spacecraft automation test, which belongs to the field of parallel tests. The method comprises the following stages: in the first stage, the test tasks, task instructions and tested parameters are analyzed and determined, a constraint relation between the tasks is defined, a time sequence constraint matrix and a parameter competitive relation matrix are established, the tasks and the constraint relation between the tasks are changed into undirected graphs, a parallel task scheduling problem is changed into a minimum coloring problem in the sequence of the tops of the graphs, a method based on the combination of a particle swarm and simulated annealing is used for solving, and then a test task group with the maximal degree of parallelism is obtained; in the second stage, the obtained test task group with the maximal degree of parallelism is distributed on limited test equipment, and then an optimal scheduling scheme is obtained. According to the two-stage scheduling method, the constraint relation among a plurality of test tasks is quickly established, the independence between the test tasks is analyzed, the degree of parallelism of the test tasks is increased, the optimal scheduling of the tasks on the equipment is realized when constraint conditions are satisfied, and the test efficiency is improved.
Owner:BEIHANG UNIV
Relay protection real-time digital dynamic simulation test system based on IEC 61850
The invention relates to a relay protection real-time digital dynamic simulation test system based on IEC 61850. The test system comprises an upper computer, an electric system real-time digital simulator, a tested digital relay protection device and a data port. To solve the problem that according to an existing RTDS, an IEC 61850 module is not consistent with a digital relay protection device in China in the format of message data, a test port of the digital relay protection device which is based on the RTDS and can achieve data collection, data exchange and data processing is developed by means of a high-communication-precision chip and Verilog program design, and the test port, the RTDS, the upper computer and the tested digital relay protection device constitute the relay protection digital dynamic simulation test system based on the IEC 61850. As is proved by closed loop test researches and tests of a 220kV line digital protection device in a certain intelligent substation in Tianjin power grid, the relay protection real-time digital dynamic simulation test system completely meets actual requirements of projects.
Owner:STATE GRID CORP OF CHINA +1
Display visual angle adjusting device and adjusting method thereof
ActiveCN103529853AObservation effect is goodIncrease the effective viewing angleCharacter and pattern recognitionPosition/direction controlDisplay deviceVisual perception
The invention relates to a display visual angle adjusting device and an adjusting method thereof. The device comprises an image acquisition unit, a control unit and a driving unit, wherein the image acquisition unit, the control unit and the driving unit are successively connected; the image acquisition unit obtains a human face image and / or human body image before a display; the control unit, according to the human face image and / or the human body image, obtains an optimum observation visual angle and calculates the adjusting amount of the current observation visual angle of the display and the optimum observation visual angle; the driving unit, according to the adjusting amount outputted by the control unit, adjusts the display to be at the optimum observation visual angle; the driving unit comprises a connecting part hinged to the back of the display, a support connected with the connecting part, a base supporting the support, and a motor fixed on the connecting part for driving the display to rotate. According to the display visual angle adjusting device, an observer obtains better observation effects through the rotation of the display; the maloperation risks caused by visual fatigue of an operator is reduced; and the largest visual area and comfortableness can be obtained.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
Existing railway survey method based on total station
InactiveCN101539410ARealize measurementAchieving processing powerUsing wave/particle radiation meansHydrologyTotal station
The invention relates to an existing railway survey method based on a total station. In the method, the total station and an electromagnetic wave reflection device are adopted to survey an existing railway. The survey method comprises the following steps: firstly arranging the electromagnetic wave reflection device at the center of the existing railway line to be surveyed by virtue of a traditional measuring square ruler; determining position of the total station, and surveying the line center by the electromagnetic wave reflection device to obtain distance (slant distance), horizontal angle and vertical angle of the surveyed line and 3D coordinates of survey points (X, Y and H) of the measured line (slope distance); and then analyzing and calculating the survey data by a PDA, and performing survey on line mileage, center line, traverse, elevation and other railway equipment. The existing railway survey method based on a total station reduces on-track operation times of operators, guarantees safety of surveyors, instruments and equipment, accuracy and reliability of the surveyed data, improves production efficiency of the existing railways, and alleviates labor intensity of the operators.
Owner:黄远宏 +1
Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor
This invention discloses a kind of strapdown drilling dip-compass based on magnetic drag and rake angle sensor. Down-hole searching tube is composed of mechanical skeleton and hardware circuit boards. The hardware circuit board is installed in the mechanical skeleton. The said hardware circuit board is composed of three-axis magnetic drag sensor, two-axis rake angle sensor, own 24 bit A / D SCM, communication circuit, RS232 interface circuit and power circuit. It includes three-axis integration magnetic drag sensor, two-axis integration rake angle sensor, own A / D conversion SCM and the communications circuit which contacts the ground device. It can not only improve the measuring accuracy of the inclinometer, reduce its volume, low cost and can improve the efficiency of equipment production.
Owner:BEIHANG UNIV
Road identification and path optimization AGV (automatic guided vehicle) based on machine vision and control system of AGV
ActiveCN106444758AGuaranteed safety and reliabilityImprove flexibility and obstacle avoidancePosition/course control in two dimensionsPolyamideEngineering
The invention provides a road identification and path optimization AGV (automatic guided vehicle) based on machine vision and a control system of the AGV. By the aid of machine vision, a speed-adjustable motor, an ultrasonic module and the like, automatic road identification and optimal path selection of the AGV are realized. A camera is used for acquiring road images, a main control system is used for identifying features points simply built on a movement path by PA (polyamide) adhesive paper, the path is automatically identified, the optimal path is selected by a Dijkstra algorithm, task signals in the driving process are transmitted by a remote control module, obstacles are detected by the ultrasonic module to trigger audible and visual alarm, and emergency brake is realized.
Owner:SOUTH CHINA AGRI UNIV
Large-angle oblique imaging aerocamera targeted target positioning method
InactiveCN107490364AVerify validitySmall probability errorPhotogrammetry/videogrammetryAviationLongitude
The invention discloses a large-angle oblique imaging aero-camera targeted target positioning method. In accordance with the problems that the shooting distance of a large-angle oblique imaging aero-camera is long, and the operating distance of laser distance measuring equipment is limited, and the invention provides a direct targeted target positioning algorithm which is independent of the distance measuring equipment. According to the position and the attitude information of a carrying aerial vehicle, measured by the carrying aerial vehicle POS ( position and orientation system) and frame angular position information measured by a position encoder in the aero-camera; a homogeneous coordinate conversion method is used for solving the direction of a target under a geodetic coordinate system; and an earth ellipsoid model and a digital elevation model are used for determining latitude and longitude information of the target point. According to the large-angle oblique imaging aero-camera targeted target positioning method disclosed by the invention, flight test data is used for verifying the validity of the target positioning algorithm; and when the flight height is 18000m, and the rolling angle of a shooting frame is smaller than 63 degrees, the target positioning circular probable error is smaller than 70m, so that engineering actual requirements can be met.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Vacuum combined surcharge preloading method settlement volume measurement method
The invention discloses a vacuum combined surcharge preloading method settlement volume measurement method. The consolidation coefficient C[td] of each working state time interval is obtained by each settlement volume measured value s[it] of a plurality of working state time intervals; a mathematical average value is obtained by the consolidation coefficients C[td] of all the working state time intervals, so that an equivalent consolidation coefficient C'[v] is obtained, the consolidation degree U of the foundation soil layer at any moment can be solved in the consolidation process, and finally, the consolidation degree of the foundation soil layer at any moment can be solved. The settlement volume measurement method disclosed by the invention is simple, convenient and feasible, measurement accuracy can meet project actual requirements; only basic soil engineering parameters of the foundation soil layer are required to effectively calculate the consolidation settlement volume of a vacuum combined surcharge method soil body at any moment; the measurement method can be used for accurately calculating the settlement volume of a site, a road or similar conditions, accordingly, fill quantities can be accurately estimated during preloading method construction, the measurement method has a certain guide meaning for design and construction, thus the project quality is ensured, and the time limit of the project can be reasonably estimated in advance.
Owner:ZHUHAI ELECTRIC POWER DESIGN INST
Parallel genetic algorithm steam pipe system model auto-calibration system based on TBB (threading building block)
InactiveCN102867090ASpeed up searchIncrease mutation rateGenetic modelsSpecial data processing applicationsRelational databaseData acquisition
The invention discloses a parallel genetic algorithm steam pipe system model auto-calibration system based on a TBB (threading building block) and belongs to the field of steam pipe system model calibration and calculation. A hardware system comprises a relational database server, a real-time database server, an application server and an engineer station, wherein the relational database server is connected with the engineer station and the application server; and the application server is also connected with the real-time database server and the engineer station, so that data exchange among the application server, the real-time database server and the engineer station is kept. An application module comprises a relational database, a data acquisition module, a data result display module, a hydraulic thermal coupling calculation module and a pipe system model auto-calibration module. The parallel genetic algorithm steam pipe system model auto-calibration system has the advantage that quick and accurate steam pipe system model calculation is realized. Therefore, pipe system model calculation is more accurate, and analysis and maintenance on a pipe system are more facilitated.
Owner:AUTOMATION RES & DESIGN INST OF METALLURGICAL IND +1
Dynamic vibration absorption and energy consumption apparatus for reducing wind vibration response of high tower structure
The invention discloses a dynamic shock-absorbing and dissipating energy device of reducing high tower structure wind vibration response, which comprises the following parts: steel pendulum tie1 whose one end hangs on the structure6, another end hangs with mass block2; the block2 can be used for boring iron shot or casting aluminum steel ball; the pendulum tie1 crosses the hole; the antifatigue damage device is installed in suspension construction; the pendulum tie1 crosses cylindrical compression spring31, whose both extremities of perforated bearing plate32 are clamped by fastener33; the upper, lower end of pendulum tie on mass block2 install antifatigue damage device3; the periphery of mass block is fixed with bump amortization dissipating energy component rubber ring4 whose amortization is more than 5%; There is a protection and repair suspender5 between structure6 and mass block. The control structure is effective, simple and reliable, which is installed in the mast cartridge for vibration damping control the mast structure shacking; the invention improves the control effect, which avoids the big and complicated device.
Owner:深圳中建院建筑科技有限公司
Visualized and dynamic testing rule creating method oriented to parallel tests of safety demanding system
InactiveCN103914385ASimple structure and easy to useSimple and compact structure definitionSoftware testing/debuggingSystem testingNODAL
The invention discloses a visualized and dynamic testing rule creating method oriented to parallel tests of a safety demanding system and belongs to the field of system testing. The method includes defining an isomorphic storage data structure of a type tree of a five-grade structure for all type tests of the safety demanding system; creating a current type tree and a comparison type tree according to the type tree; performing type tree copying or single node copying according to test needs; when nodes in the comparison type tree are added into the current type tree, judging whether homonymic nodes positioned under same subsystem nodes or test item nodes and identical in logic relation exist or not, wherein as for the homonymic nodes, re-adding is not performed. In the method, node operations on the current type tree are all recorded in a buffering area, and redundancy eliminating operation is performed before the node operations are submitted to a database. By the method, a universal storage structure for multi-type tests is designed, so that compiling time of testing rules and workload of testing personnel in multi-type spacecraft tests are reduced, and testing efficiency is improved.
Owner:北京精准数通智能科技有限公司
Modeling method for analytical model of equivalent and linear damping coefficient of magnetorheological damper
ActiveCN103514380AEasy to identifySimple structureSpecial data processing applicationsDamping factorModel method
The invention discloses a modeling method for an analytical model of equivalent and linear damping coefficient of a magnetorheological damper. The modeling method is characterized by comprising the following steps: acquiring sampled data of the magnetorheological damper through MTS mechanics measuring system experimentation; utilizing dissipation energy in a period of the magnetorheological damper to calculate equivalent and linear damping coefficient of the magnetorheological damper in different working conditions; adopting linear fitting and power function fitting to construct relation of parameters of three independent working conditions to the equivalent and linear damping coefficient respectively; conducting coupling calculation to acquire analytical models of equivalent and linear damping coefficients of the magnetorheological damper in the three independent working conditions; adopting least square pseudo-inverse method to identify the parameters to be identified of the analytical models of the equivalent and linear damping coefficients with the assistance of experimentation sampled data. The modeling method can be used for modeling an equivalent dynamic model of the magnetorheological damper, can be used for stability analysis of a structure system in which the magnetorheological damper is mounted, and can be used for predicting and determining the property of the magnetorheological damper.
Owner:HEFEI UNIV OF TECH
Single-column stay wire tower torsion frequency estimation method based on single degree of freedom model
ActiveCN104504225ASimple calculationMeet the actual needs of the projectSpecial data processing applicationsSingle degree of freedomEstimation methods
The invention discloses a single-column stay wire tower torsion frequency estimation method based on a single degree of freedom model and belongs to the technical field of stay wire towers. According to the single-column stay wire tower torsion frequency estimation method, the single degree of freedom model is utilized to simulate torsion of a stay wire tower, the torsion stiffness of a main column is higher than the torsion stiffness of a stay wire system in a extra-high voltage single-column stay wire tower, torsional deformation of the main column is ignored, computation formulae of the stay wire system, the torsion stiffness of the main column and a stay wire system rotational inertia are deduced on the basis of a torsional vibration mechanism of the single-column stay wire tower, the correctness of the computation formulae and the reasonability of model simplification are verified through comparison between a computation result and a finite element simulation result, and the single-column stay wire tower torsion frequency estimation method can be used for single-column stay wire tower torsion frequency estimation.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Rapid active disturbance rejection method for air cavity pressure based on extended state observer
ActiveCN111413872AFast active anti-jammingEasy to set upArtificial lifeFluid pressure controlAviationTechnological research
The invention provides a rapid active disturbance rejection method for air cavity pressure based on an extended state observer. The method is suitable for intake and exhaust pressure control of a typical engine transition state test task, and mainly comprises the following steps of constructing a control model of an air cavity pressure system based on linear active disturbance rejection control, and estimating total disturbance (the sum of internal disturbance and external disturbance) influencing a controlled quantity in real time through an extended state observer, dynamically transforming an original uncertain system into an ideal integral series system through a special state feedback mechanism, estimating disturbance by utilizing natural advantage predictability and disturbance rejection of a linear active disturbance rejection controller, and updating the convergence rate and the global search capability through an improved whale algorithm, and immediately eliminating disturbanceby using the controlled quantity, so that the purpose of rapid and active disturbance rejection is achieved. Technical support can be provided for follow-up complex control technology research such as aircraft engine transition state test environment simulation multivariable control and dynamic decoupling control.
Owner:SOUTHWEAT UNIV OF SCI & TECH
Soil slope stability analysis method based on sliding zone
ActiveCN107480342AMeet the actual needs of the projectReliable resultsDesign optimisation/simulationIn situ soil foundationSoil scienceSlope stability analysis
The invention relates to the field of soil slope stability analysis, in particular to a soil slope stability analysis method based a sliding zone. Through numerical value calculation, the sliding zone is simulated, on this basis, a sliding surface which meets a specific requirement is screened, a safety coefficient of the sliding surface is subjected to weighted processing, a final safety coefficient of a soil slope is calculated, not only is the influence generated when multiple reasonable dangerous sliding surfaces in the sliding zone landslide taken into full account of, but also the result of weighted processing is reliable, and the soil slope stability analysis method is relatively conservative and can meet engineering practical needs.
Owner:HOHAI UNIV
Dispersed anchoring device and dispersed anchoring method suitable for large-tonnage FRP inhaul cable
PendingCN111535174AAvoid body damagePrevent slippage damageBridge structural detailsBridge erection/assemblyYarnStructural engineering
The invention discloses a dispersed anchoring device and a dispersed anchoring method suitable for a large-tonnage FRP inhaul cable. The dispersed anchoring device comprises an inner conical sleeve, asmall end cover plate located at a small end of the inner conical sleeve and a large end cover plate located at a large end of the inner conical sleeve. The small end cover plate is a first yarn splitting plate, the large end cover plate is a second yarn splitting plate, and at least one third yarn splitting plate is further arranged in the inner conical sleeve; rib holes distributed according toa first rule are formed in the first yarn splitting plate. The rib holes distributed according to a second rule are formed in the second yarn splitting plate. The rib holes distributed according to athird rule are formed in the third yarn splitting plate. A core of the anchoring device lies in overall bending and local splitting of the FRP inhaul cable in an anchorage area, creep deformation ofthe FRP inhaul cable under long-term load holding can be remarkably reduced, the FRP inhaul cable is prevented from being pulled out and damaged, meanwhile, a size of an anchorage device can be reduced, and manufacturing cost can be decreased.
Owner:SOUTHEAST UNIV
Star simulator magnet based on cubic permanent magnet blocks and optimal arrangement method of star simulator magnet
ActiveCN112786273AEasy to processEasy to manufactureElectromagnets without armaturesNuclear energy generationMagnetizationComputational physics
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Aero-engine turbine blade sampling clamp
PendingCN111551391AHigh sampling positioning accuracyEasy to operateWithdrawing sample devicesTurbine bladeControl engineering
The invention belongs to the technical field of aero-engine strength and service life design, and especially relates to an aero-engine turbine blade sampling clamp. The clamp is used for clamping a turbine blade with a preset sampling position and comprises a hexahedron-shaped body part, a mortise is formed in the top face of the body part in a sunken mode, a bolt hole for fixing is formed in thebottom of the body part, and the bolt hole for fixing perpendicularly penetrates into the mortise from the bottom face of the body part from bottom to top. According to the aero-engine turbine blade sampling clamp disclosed by the invention, the sampling of the turbine blade can be realized. The blade is clamped and fixed, the sampling position space angle is adjusted, a plurality of effective positioning faces are provided for cutting machining, standardization and consistency of sampling are guaranteed, then effectiveness and precision of obtained real blade mechanical property test result data are guaranteed, and the clamp can be applied to turbine blade real component performance obtaining and blade strength and service life design.
Owner:AECC SHENYANG ENGINE RES INST
Evaluation index for anti-shearing performance of waterproof bonding layer paved on bridge deck
InactiveCN103792148AMeet the actual needs of the projectSimple and fast operationMaterial strength using steady shearing forcesFreeze and thawBridge deck
The invention discloses an evaluation index for the anti-shearing performance of a waterproof bonding layer paved on a bridge deck. According to the evaluation index disclosed by the invention, freezing and thawing cycle lateral stiffness ratio LSR is adopted for evaluating, wherein LSR is not smaller than 85%, LSR is the ratio of the lateral stiffness of a freezing and thawing cycle test specimen to the lateral stiffness of an unfreezing and un-thawing cycle test specimen, the lateral stiffness LS is the ratio of the peak load to the maximum relative displacement among layers when a waterproof bonding layer of tar sands or modified tar sands is subjected to shear failure, and the shear force and the displacement in LS index among the layers can be accurately tested, the operation is simple and convenient, thus popularization is easy. According to the evaluation index disclosed by the invention, the defects that in the current regulation of China, the triaxial compression shear strength test is difficult to operate and complicated in calculation, and the shear strength parameters c and phi have small difference are overcome; the lateral deformation resistance of the waterproof bonding layer paved on the bridge deck can be truthfully reflected; the LSR is also suitable for evaluating the anti-shearing performance of a bituminous mixture; the LSR integrates high temperature property, low temperature property and high stability of the bituminous mixture, and can comprehensively evaluate the pavement performance of the bituminous mixture.
Owner:SHENYANG JIANZHU UNIVERSITY
Floor formed by combining cold-formed thin-wall C-shaped steel and straw plates and manufacturing method
InactiveCN106149939AIncrease stiffnessImprove bearing capacityMonocarboxylic acid ester polymer adhesivesNon-macromolecular adhesive additivesCold formedAdhesive
The invention discloses a floor formed by combining cold-formed thin-wall C-shaped steel and straw plates and a manufacturing method. The combination floor is made from the two straw plates and the two pieces of cold-formed thin-wall C-shaped steel in a combination mode; the cold-formed thin-wall C-shaped steel is arranged between the straw plates, the straw plates and the cold-formed thin-wall C-shaped steels are bonded through high-strength structural adhesive, the high-strength structural adhesive forms the solidified bonded face, self-tapping screws for fixing the straw plates and the cold-formed thin-wall C-shaped steel are arranged at the solidified bonded face, sealing strips are arranged on the sides of the two straw plates and connected with the straw plates through screws, a plurality of rib strips are arranged on the connecting faces of the cold-formed thin-wall C-shaped steel, and a plurality of barbs are arranged on the connecting faces of the straw plates and engaged with the rib strips; the rigidity and the bearing capacity of a pure steel floor and a pure wood floor are improved, and the actual engineering requirements are met; the floor can be manufactured in a plant, site assembly is carried out, and the site construction time is largely shortened; the floor is compared with a traditional concrete floor ceiling and the like, and the self weight is small, the whole construction cost is low, the bearing capacity is high, and the ductility is good.
Owner:CHINA MCC17 GRP
Unit load prediction method based on time sequence similarity
Owner:ZHEJIANG ZHENENG TECHN RES INST +1
Embedded energy-dissipating module of coupled shear wall and using method of embedded energy-dissipating module of coupled shear wall
InactiveCN103206028AReduce the difficulty of reinforcementReduce design difficultyWallsBuilding material handlingEngineeringRebar
The invention provides an energy-dissipating module convenient to design and construct. With the energy-dissipating module, energy-dissipating capacity of coupling beams can be increased when construction difficulty is not increased. Dampers with different span-depth ratios can be assembled by the energy-dissipating modules in a horizontal direction and in a vertical direction, the energy-dissipating zone is integrated with a build-in zone, a row of long-strip-shaped holes are reserved on the energy-dissipating zone in the long-side direction, the ends of the holes are processed into non-closed angles, the energy-dissipating modules are embedded in the reinforced concrete in a coupled shear wall, and thus, the problems in the prior art are solved.
Owner:滕军
Micro-combustor for metal mesh heat storage and flame stabilization and combustion method thereof
ActiveCN104748111AHigh flame temperatureImprove stabilityLiquid fuel evaporation burnersLiquid fuel burnerCombustorPorous medium
The invention discloses a micro-combustor for metal mesh heat storage and flame stabilization and a combustion method thereof. The micro-combustor for the metal mesh heat storage and flame stabilization comprises a combustor outer barrel and an igniter arranged in the combustor outer barrel; a combustor comprises a hollow blunt body, a multi-hole medium disc and a metal mesh, wherein the longitudinal section of the hollow blunt body is in the shape of an inverted triangle, the multi-hole medium disc is arranged on the hollow blunt body, the metal mesh is arranged on the multi-hole medium disc, and the bottom of the hollow blunt body is connected with a fuel channel. By means of the multi-hole medium disc, it is guaranteed that fuel is dispersed evenly, the superficial area of the fuel is increased, and the evaporation rate is sped up. A high temperature low-velocity backflow zone is formed near an outlet of the hollow blunt body, the dwell time of the fuel is increased, the metal mesh is taken as a heat storage medium and has the functions of absorbing heat and releasing heat, and the flame temperature can be maintained at a certain level; compared with other combustors, by means of the micro-combustor for the metal mesh heat storage and flame stabilization, a flame can be made to be attached to the metal mesh stably, sharply swing or up and down fluctuation of the flame does not occur along with changes of working conditions, and the stability of combustion of liquid hydrocarbon under micro scale is greatly promoted.
Owner:SOUTH CHINA UNIV OF TECH
Redundant robot repeated motion planning method adopting rapid double-power final state neural network
ActiveCN109159124AHigh accuracy of closing angleFast convergence characteristicsProgramme-controlled manipulatorRobot motion planningFinite time
The invention discloses a redundant robot repeated motion planning method adopting a rapid double-power final state neural network. The method comprises the following steps that a desired trajectory r-d(t) of a robot end effector is given in cartesian space, an expected return angle theta -d(0) of each joint is given; for the repeated motion of a robot, an asymptotic convergence performance indexis adopted, a problem is solved by converting an quadratic optimization problem of redundant robot trajectory planning into a time-varying matrix equation, and the rapid double-power final state neural network is used as a solver. Under the condition of initial position offset, a repeated motion planning task for rapid finite-time convergence of the redundant robot is achieved. According to the provided redundant robot motion planning method adopting the rapid double-power final state neural network, rapid finite-time convergence is achieved, calculation precision is high, and implementation is easy.
Owner:ZHEJIANG UNIV OF TECH
Universal comprehensive detection device and method for aviation mission electronic systems
The invention provides a universal comprehensive detection device and method for aviation mission electronic systems, and belongs to the field of system detection. The device comprises a detection client module and a logic detection unit; the detection client module comprises a detection parameter editing module, a detection standard configuration module, a detection command generation module, a detection result display module and a message communication module; the logic detection unit comprises a detection command analysis module, a detection execution module and a detection result judgment module; the method comprises the steps of editing and saving detection parameters, setting a detection standard configuration file, preparing for detection, executing detection, generating a detection command, interpreting the detection command, judging the position of a detected host and performing corresponding processing, and processing a detection result. The universal comprehensive detection device and method have the following advantages that comprehensive detection is performed on hosts to be detected of subnets of all levels and of multiple models and multiple system types, the universality and the cross-platform capability are improved, and the working process of the comprehensive detection is simplified.
Owner:BEIHANG UNIV
Boiler wide-load NOx emission concentration prediction method based on model migration
The invention discloses a boiler wide-load NOx emission concentration prediction method based on model migration. A numerical simulation calculation center, a base model training center, an operationdata communication interface, a base model migration and updating mechanism and a NOx emission prediction model communication interface are included. The method comprises: in a feasible region of mainoperation parameters of a boiler, obtaining a boiler full-working-condition sample under a designed coal type through off-line simulation by taking the designed coal type as a reference, and establishing a NOx emission prediction base model by adopting machine learning; considering non-design coal types for boiler combustion, obtaining a small number of typical working condition samples through off-line simulation, then migrating the design coal type base model to the non-design coal type working conditions by adopting Gaussian process regression, and forming a base model library adapting tothe change of multiple coal types; considering the difference between the actual working condition and the simulated working condition, selecting a base model according to the actual coal quality, andthen projecting the base model to the actual operation state of the boiler through transfer learning based on the operation data, so as to realize accurate prediction of the NOx emission concentration under the wide load of the boiler.
Owner:JIANGSU FRONTIER ELECTRIC TECH +1
Underwater anchor rod construction method
InactiveCN103669347AMeet the actual needs of the projectBulkheads/pilesMarine engineeringHydraulic structure
The invention provides an underwater anchor rod construction method. Anchor rod construction is carried out on an underwater hydraulic structure through the work procedures of arrangement of an overwater platform, drilling lofting, installation of an underwater sleeve pipe, formation of an anchor rod installation hole in the sleeve pipe in a drilling mode, underwater installation of the anchor rod through a drilling rod, blockage and sealing of a hole opening, underwater anchor rod grouting, removal of the drilling rod and the like. By means of the underwater anchor rod construction method, under the condition that the underwater structure needs repairing or reinforcing, construction can be directly carried out with water, and the actual requirements of a project are met.
Owner:HUBEI GEZHOUBA TESTING
Redundant robot repetitive motion planning method with finite interval neural network adopted
ActiveCN108908340AFast convergence characteristicsHigh accuracy of closing angleProgramme-controlled manipulatorFinite timeRobot end effector
The invention relates to a redundant robot repetitive motion planning method based on a finite interval neural network. The expected trace rd(t) of a robot tail end actuator is provided in the Cartesian space, and the expected returning angle theta d(0) of each joint is provided as well. Asymptotic convergence property indexes are adopted for the repetitive motion of a robot, the quadratic optimization problem of trace panning of the redundant robot can be converted to solving a time-varying matrix equation, and the finite interval neural network can work as a solver. The method achieves finite-time convergent repetitive motion planning of the redundant robot under the condition of initial position deviation.
Owner:ZHEJIANG UNIV OF TECH
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