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36results about How to "Efficient design method" patented technology
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Solid rocket engine overall parameter design method
ActiveCN111783251AReduce the number of timesAccurate design methodGeometric CADDesign optimisation/simulationParameter designDesign space
The invention provides a solid rocket engine overall parameter design method. The method comprises the steps of obtaining a task target, and generating an initial sample point in a design space by adopting an optimized Latin hypercube experiment design method; inputting the initial sample point into an engine performance simulation model to obtain a constraint condition and an objective function corresponding to the initial sample point; constructing an agent model of the target function and the constraint condition according to the initial sample point, the constraint condition correspondingto the initial sample point and an initial training sample formed by the target function; carrying out optimization processing on the agent model by adopting a differential evolution algorithm, and outputting an optimal sampling point; and taking the optimal sampling point as a new sampling point to be input into the engine performance simulation model, and outputting the optimal engine structuredesign parameter according to the convergence condition. By the adoption of the method, structural parameter design with the optimal comprehensive performance can be obtained, and the overall design efficiency and the comprehensive performance of the solid rocket engine are remarkably improved.
Owner:NAT UNIV OF DEFENSE TECH
SIP soft terminal supporting WEB service and multiple browsers and working method thereof
The invention discloses an SIP soft terminal supporting a WEB service and multiple browsers and a working method thereof. The soft terminal is a multimedia terminal of which various interfaces for supporting the WEB service and multiple browsers are configured on the conventional desktop and which uses a webpage browser as an operation carrier. The soft terminal is provided with a JavaScript interface and a soft terminal assembly module, wherein the JavaScript interface is provided with a soft terminal builder and a soft terminal expansion interface; and a soft terminal functional module is packaged as a soft terminal assembly module by using a browser adapter interface. Compared with the conventional soft terminal, the SIP soft terminal has the advantages that: the building of the soft terminal assembly module is triggered by a JavaScript script and finally the soft terminal is embedded in the browser, the trouble of manual installation by the user is saved and a technique for the embedment in the browser is mature and is easy to realize; an operation platform set for developing WEB expansion services, which is a JavaScript-based bidirectional calling interface is provided for a programmer, the working details of a bottom layer soft terminal module is shielded, and the development of rich WEB services satisfying the individual needs of customers by the programmer is made extremely convenient.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Resolution design method of decoupling controller of multivariable time delay system
InactiveCN1794117AEfficient designPracticalComputer controlAdaptive controlTransfer function matrixDecoupling controller
A method for designing decouple controller analysis of multivariable time lag system includes carrying on identification of transfer function matrix for chemical industrial multivariable time lag procedure, designing two regulation factors being able to be realized by controller and designing decouple controller, leading designed controller to be infinite high order if GO ( s ) still contains time lag item after object transfer function matrix is decomposed, applying controller order ¿C decreasing technique to carry out order ¿C decreasing on controller.
Owner:SHANGHAI JIAO TONG UNIV
Single-layer vibration isolation system design method for power equipment
ActiveCN105389428AImprove the vibration isolation effectGuarantee of vibration isolation rateSpecial data processing applicationsSystems designDynamic models
The present invention discloses a single-layer vibration isolation system design method for power equipment. The method comprises the following steps: testing a vibration property of a vibration source of power equipment so as to acquire an excitation frequency and a vibration isolation performance parameter of the vibration source; acquiring an inertial parameter of the power equipment; determining the number of vibration insulators and a constraint condition in a single-layer vibration isolation system; establishing an optimization objective function of a vibration isolation rate and a comprehensive decoupling rate; and establishing a multi-body dynamics model and optimizing calculation of a single-layer vibration isolation system design by using a particle swarm optimization algorithm. According to the single-layer vibration isolation system design method for power equipment provided by the present invention, the two design objectives, the vibration isolation rate and the decoupling rate, are both considered, so that with the vibration isolation rate being ensured, a coupling effect of a rigid body mode of each order is effectively lowered. The vibration isolation performance of a vibration isolation system can be truly improved. No repeated commissioning is required in the design process; an acquired design parameter is of an optimal value; an effect evaluation parameter will definitely meet the requirement of specifications; and a design result is accurate and highly efficient.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Simulated electromagnetic disturbance source for isolating switch
ActiveCN105137135AHigh precisionEasy to assembleElectrical measurement instrument detailsElectrical testingCapacitanceCapacitive divider
The invention discloses a simulated electromagnetic disturbance source for an isolating switch. The simulated electromagnetic disturbance source comprises a testing transformer, a capacitive divider, an adjustable grounding capacitor, a power supply side analog capacitor, a vacuum circuit breaker switch, a discharging sphere gap and a load side analog capacitor. The original side of the testing transformer is connected with a power supply, and the auxiliary side is serially connected with the capacitive divider. The power supply side analog capacitor is parallelly connected with the capacitive divider. The anode of the power supply side analog capacitor is successively connected with the vacuum circuit breaker switch, the discharging sphere gap, the load side analog capacitor and a grounding capacitor in series. The cathode of the power supply side analog capacitor is grounded. The simulated electromagnetic disturbance source can truly simulate an electromagnetic disturbance process and a ground potential increase process in a switching-on process and a switching-off process of the isolating switch and can output a 1.1MHz high-strength electromagnetic field. Furthermore the simulated electromagnetic disturbance source for the isolating switch has advantages of convenient assembling, simple operation, high testing safety and high precision.
Owner:STATE GRID CORP OF CHINA +2
100kA lightning current generator for testing impulse characteristics of grounding device
ActiveCN105510753AStable outputEasy to operateEarth resistance measurementsMeasuring interference from external sourcesEngineeringPeak value
The invention discloses a 100kA lightning current generator for testing the impulse characteristics of a grounding device. The 100kA lightning current generator is characterized by comprising a generator, a direct-current charger and a surge generator body; an output end of the generator is connected with an input end of the direct-current charger, and an output end of the direct-current charger is connected with an input end of the surge generator body. The 100kA lightning current generator is a lightning current generator which can output a highest voltage of 1200kV, a lightning current peak of 100kA and a waveform of 8 / 20 microseconds or 2 / 1microseconds under the condition of a load greater than 5 omega. The 100kA lightning current generator can be applied to the testing of surge impedance of the grounding device, the research of a soil spark discharge phenomenon, high-current withstanding impulse experiments of grounding materials, electromagnetic compatibility experiments and other aspects, and can increase the precision and accuracy of the technical application.
Owner:STATE GRID CORP OF CHINA +2
Complex network synchronization control method under aperiodic DoS attack
ActiveCN112995154AReduce loadSave bandwidth resourcesTransmissionHigh level techniquesLyapunov stabilityAttack
The invention discloses a complex network synchronization control method under aperiodic DoS attack, and the method comprises the steps: firstly building a complex network system model and a synchronous error model, introducing an event triggering mechanism, building a network attack model based on the influence of the aperiodic DoS attack on network transmission data; designing a synchronization error model of the complex network under a non-periodic DoS attack and event triggering mechanism; utilizing a Lyapunov stability theory to obtain a sufficiency condition for ensuring the stability of a system index; and finally, solving a linear matrix inequality to obtain an event triggering parameter and a controller feedback gain. According to the method, network bandwidth resources can be effectively saved, the communication capability of a transmission channel is improved, and meanwhile, a networked system can be helped to keep stable operation when coping with network attacks; an event triggering mechanism is introduced, so that the burden of network transmission can be effectively reduced.
Owner:NANJING UNIV OF SCI & TECH +2
Parametric modeling method of folded plate reticulated shell based on grasshopper
ActiveCN109190231ASimple forceSimple designGeometric CADDesign optimisation/simulationGrasshopperSimulation
The invention provides a parametric modeling method of a folded plate reticulated shell based on grasshopper, which is used for solving the problems of modeling difficulty, low modeling efficiency andlow repetition utilization rate of the existing space folded plate reticulated shell with complex modeling. The invention comprises the following steps: expressing the geometrical parameters of a lattice shell model to be established by corresponding input plug-ins; generating a flap surface or quasi-spherical surface by using the application plug-ins according to geometrical relation; selectingone of the planes and using an isoparametric method or subdivision method to mesh a folded surface to generate local meshes; gridding all the planes by the circumferential array plug-in, and generating the single-layer folded latticed shell by connecting the bars with the plug-in. The invention has the advantages of simple design method, new model can be established by changing the parameter valuein the model, the modeling efficiency can be improved, the force analysis and the structural design optimization of the complex space reticulated shell structure under different types and different parameters are improved greatly and conveniently, and the use of the complex space reticulated shell structure is promoted.
Owner:HENAN ENG DESIGN CONSULTANTS OF CSCEC
Tube-type nanosecond high voltage steep pulse source
ActiveCN105049004AEasy to carryEasy to operatePulse generation by energy-accumulating elementNanosecondNanosecond pulse
The invention discloses a tube-type nanosecond high voltage steep pulse source, which comprises a high-voltage DC source, an input connector, a pulse transmission path, an operation switch and an output connector, wherein the input connector is composed of an input high voltage BNC joint and an input joint, the input high voltage BNC joint is connected with the high-voltage DC source, the output connector is composed of an output joint and an output high voltage BNC joint, the pulse transmission path is connected with the input joint and the output joint, the operation switch is arranged outside the pulse transmission path, and the pulse transmission path is provided with a wet reed tube for controlling output of the high voltage steep pulse source through control of the operation switch. The steep pulse source of the invention has a small size, is light in weight and can be used in a test device for measuring space charges by using a pulsed electroacoustic method; and as the wet reed tube is adopted for replacing a spark gap, the weight of the power supply is greatly reduced, and through test, nanosecond pulse voltage with a pulse width about 1ns and the highest amplitude of 2000V can be outputted.
Owner:STATE GRID CORP OF CHINA +2
Envelope die design method for improving spatial envelope forming precision under linear track
ActiveCN110826252AGuaranteed formabilityGuaranteed forming accuracyDesign optimisation/simulationRotational axisPoint cloud
The invention relates to an envelope die design method for improving the spatial envelope forming precision under a linear trajectory. The method comprises the following steps of S1, building an O-xyzrectangular coordinate system through employing the highest plane geometric midpoint O of the upper surface of a component as the origin of coordinates; S2, generating an envelope mold design principle based on a component inversion method, and enabling the component to perform linear reciprocating swing motion around a rotating shaft; S3, dispersing and extracting the coordinates of the points on the upper surface of the component, and putting the coordinates into a set V1; S4, obtaining a point set V1' under different rotation angles from the point set V1 in the step S3 according to the movement in the step S2, wherein the set is the overall point cloud during the reverse movement process of the component, and the point cloud on the upper surface of the set is the envelope mold; and S5,extracting the upper surface points from the V1' point set by utilizing a boundary extraction algorithm, and putting the upper surface points into a point set V2, so that the point set V2 is the surface points of the envelope mold under the linear track. The envelope mold obtained by the method does not interfere with the upper surface of the component, and thus the spatial envelope forming precision of the component is improved.
Owner:WUHAN UNIV OF TECH
Flexible printed circuit (FPC) jointed board and jointed board design method thereof
InactiveCN105407637ASimple structureImprove qualityPrinted circuit aspectsInsulating layers/substrates workingEngineeringDesign methods
The invention aims to provide a flexible printed circuit (FPC) jointed board having the advantages of simple structure, high quality and high material utilization ratio, and also provides a simple and efficient design method of the FPC jointed board at the same time. The FPC jointed board comprises a substrate (1). The FPC jointed board is characterized in that a plurality of large boards (10) are arranged on the substrate (1); the large boards (10) are arranged in a matrix form; blank regions (11) are further formed in the large boards (10); and a plurality of small boards (12) are arranged in the blank regions (11). The design method of the FPC jointed board comprises the following steps: a, selecting a substrate, and arranging large boards on the substrate to the maximum extent in a matrix arrangement way; b, arranging small boards in blank regions in the large boards; and c, punching the large boards and the small boards from the substrate. The FPC jointed board and the design method are applied to the technical field of FPCs.
Owner:ZHUHAI LIANJUE ELECTRONICS CO LTD
Slope and building unified design method utilizing building structure for soil retaining
ActiveCN110924417AImprove stabilityAvoid geological disastersCellarsExcavationsLandslideSlope stability
The invention relates to a slope stability building structure design method of mountain land engineering. The problem that the stability of a mountain slope is insufficient by utilizing a building structure for soil retaining is solved. The building structure comprises a raft foundation, a pile foundation and a building structure, wherein the raft foundation is arranged on the surface of the mountain slope, part of a building load is borne by using the bearing capacity of a mountain, and the horizontal soil pressure of the slope is transmitted to a flat ground structure by using a slope surface structure. After the pile foundation is arranged under the flat ground structure, front-row piles of the flat ground structure are pressed after horizontal force of the slope is transmitted thereto,rear-row piles near the slope are pulled, a soil retaining structure similar to a door structure is formed, the stability of the slope structure is improved, and the occurrence of geological disasters such as slope landslide is avoided.
Owner:ZHONGTIAN CONSTR GROUP
Genetic algorithm-based optimal design method for electric vehicle quick charging station
ActiveCN110165687ARelieve stressEfficient design methodEnergy storageAc network load balancingWind drivenSystem capacity
The invention discloses a genetic algorithm-based optimal design method for an electric vehicle quick charging station. The method comprises the following steps of generating an initial group througha chromosome structure; selecting an appropriate number of charging piles and rated power, and calculating the investment cost of the charging piles; calculating the power demand of the electric vehicle; selecting a proper number of wind driven generators and the surface area of the photovoltaic panel, and calculating the power generation power and investment cost; selecting an appropriate energystorage system capacity, and calculating the cost of the energy storage system; calculating the profit difference between the power consumption and the power supply after accessing the power grid; calculating a power supply profit for an electric vehicle user; and calculating a total profit function, and selecting optimal configuration according to a genetic algorithm. According to the method, profit differences caused by multiple variables such as the number and power of the charging piles of the electric vehicle quick charging station. The number of the wind driven generators, the surface area of the photovoltaic panel and the capacity of the energy storage system are considered. The optimal design of the electric vehicle quick charging station is determined according to the profit function. The economic benefit is improved, and the power grid pressure can be relieved.
Owner:NANJING UNIV OF POSTS & TELECOMM
Method for designing efficient duct
ActiveCN103963948AImprove computing efficiencyQuick Design MethodPropulsive elementsEngineeringSystems design
The invention discloses a method for designing an efficient duct and relates to the field of designing of a ship propelling system. Ducted propellers are applied to ships with heavy loads more and more widely. A duct is one of key components of the ducted propeller. The research direction can be that the efficient ducts are found, so that the method for designing the efficient duct is provided and based on a duct parameterization expressing method. According to the efficient duct designing method, the linetype of the duct is expressed in a parameterized mode, and the efficient duct is designed according to a CFD calculation method. By the adoption of the method for designing the efficient duct, the efficient duct can be conveniently and rapidly designed.
Owner:中国船舶重工集团公司第七〇二研究所
Resolution design method of decoupling controller of multivariable time delay system
InactiveCN100461036CEfficient designPracticalComputer controlAdaptive controlTransfer function matrixDecoupling controller
A method for designing decouple controller analysis of multivariable time lag system includes carrying on identification of transfer function matrix for chemical industrial multivariable time lag procedure, designing two regulation factors being able to be realized by controller and designing decouple controller, leading designed controller to be infinite high order if GO ( s ) still contains time lag item after object transfer function matrix is decomposed, applying controller order-decreasing technique to carry out order-decreasing on controller.
Owner:SHANGHAI JIAO TONG UNIV
Design method of layered double-metal hydroxide steel bar corrosion inhibitor based on density functional theory
PendingCN114547891AShorten the research cycleEfficient design methodAluminium compoundsDesign optimisation/simulationPhysical chemistryChloride
A design method of a layered double-metal hydroxide steel bar corrosion inhibitor based on a density functional theory comprises the following steps: (1) establishing a layered double-metal hydroxide super-cell model, and comparing and analyzing the binding energy of chloride ions, anions with corrosion inhibition performance and layered double-metal hydroxide laminates based on the density functional theory to obtain a layered double-metal hydroxide super-cell model; the layered double hydroxides with the efficient chloride ion capturing performance are screened out; (2) by establishing an iron surface super-cell model, calculating the interaction and the stability of the anions with the corrosion inhibition performance and the iron surface based on a density functional theory, and preferably selecting the anions with excellent corrosion inhibition performance on the reinforcing steel bar; and (3) combining the calculation results of the steps (1) and (2) to design the layered double-metal hydroxide steel bar corrosion inhibitor with efficient chloride ion capturing performance and excellent corrosion inhibition performance at the same time.
Owner:GUANGXI UNIV
GIS transient simulation electromagnetic interference source
InactiveCN106680549AHigh precisionEasy to assembleElectrical measurement instrument detailsMeasuring interference from external sourcesCapacitanceOvervoltage
The invention discloses a GIS transient simulation electromagnetic interference source. The GIS transient simulation electromagnetic interference source includes a boosting transformer U1, a power side simulation capacitor C1, a circuit breaker, a power side outlet bushing A2, a sphere gap, an isolating switch, a load side outlet bushing A1 and a load side simulation capacitor. The circuit breaker, the sphere gap and the isolating switch are in series connection between the power side outlet bushing A2 and the load side outlet bushing A1 to constitute a main loop. An output end of the boosting transformer U1 is connected to the power side outlet bushing A2. The power side simulation capacitor C1 is connected to the power side outlet bushing A2 and is intended for simulating the power side capacitance of an actual transformer substation. The load side simulation capacitor C2 is connected to the load side outlet bushing A1 and is intended for simulating the GIS outlet load side capacitance of the actual transformer substation. According to the invention, the GIS transient simulation electromagnetic interference source can simulate the processes of transient electromagnetic interference and very fast transient overvoltage produced in the opening and closing of the circuit breaker and isolating switch in a GIS device, simulates in an actual manner an actual electromagnetic environment where an electronic device is, and makes testing result more real and reliable.
Owner:STATE GRID CORP OF CHINA +2
Design method and design device for pushing cushion block of door protection plate
PendingCN114818138AImprove crash safetyStable supportGeometric CADSpecial data processing applicationsPelvic regionStructural engineering
The invention relates to the technical field of automobile structure design, in particular to a design method and a design device for a door protection plate pushing cushion block. The method comprises the following steps: S1, determining a chest compression amount target value and a pelvic resultant force required value; s2, constructing a two-dimensional relation curve among the chest compression amount, the pelvic resultant force and the pushing cushion block span point distance; s3, determining a theoretical value range of the cross-point distance of the pushing cushion block; s4, determining a theoretical value range of the action area of the pushing cushion block; s5, constructing a three-dimensional relation curved surface of the chest compression amount, the pushing cushion block span point distance and the pushing cushion block action area; and S6, selecting a proper design value of the cross-point distance of the pushing cushion block and a design value of the action area of the pushing cushion block, and determining the material type of the pushing cushion block. The design method disclosed by the invention is simple and efficient, and the design parameters of the pushing cushion block can be quickly obtained on the premise of meeting the Chinese new vehicle evaluation regulations and vehicle model project development targets.
Owner:DONGFENG PEUGEOT CITROEN AUTOMOBILE
A Design Method for Single-Layer Vibration Isolation System Used in Power Mechanical Equipment
ActiveCN105389428BImprove the vibration isolation effectGuarantee of vibration isolation rateSpecial data processing applicationsSystems designDynamic models
The present invention discloses a single-layer vibration isolation system design method for power equipment. The method comprises the following steps: testing a vibration property of a vibration source of power equipment so as to acquire an excitation frequency and a vibration isolation performance parameter of the vibration source; acquiring an inertial parameter of the power equipment; determining the number of vibration insulators and a constraint condition in a single-layer vibration isolation system; establishing an optimization objective function of a vibration isolation rate and a comprehensive decoupling rate; and establishing a multi-body dynamics model and optimizing calculation of a single-layer vibration isolation system design by using a particle swarm optimization algorithm. According to the single-layer vibration isolation system design method for power equipment provided by the present invention, the two design objectives, the vibration isolation rate and the decoupling rate, are both considered, so that with the vibration isolation rate being ensured, a coupling effect of a rigid body mode of each order is effectively lowered. The vibration isolation performance of a vibration isolation system can be truly improved. No repeated commissioning is required in the design process; an acquired design parameter is of an optimal value; an effect evaluation parameter will definitely meet the requirement of specifications; and a design result is accurate and highly efficient.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Dyeing and finishing technology interactive design method
InactiveCN1851095AFast design methodEfficient design methodSucessive textile treatmentsTextile shapingInteractive designInteraction design
The invention discloses a dye finishing technique interactive design method, inserting process, and technical parameters of each part of the dye finishing technique, etc, into a database; exchanging the dye finishing information on network; finally making interactive exchange with enterprisers by establishing platforms; and implementing a fast and high-efficiency interactive design.
Owner:DONGHUA UNIV
An Isolation Switch Simulating Electromagnetic Disturbance Source
ActiveCN105137135BHigh precisionEasy to assembleElectrical measurement instrument detailsElectrical testingCapacitanceCapacitive voltage divider
The invention discloses an isolating switch simulating an electromagnetic disturbance source, comprising a test transformer, a capacitor voltage divider, an adjustable grounding inductance, a power supply side analog capacitor, a vacuum circuit breaker switch, a discharge ball gap and a load side analog capacitor; the primary side of the test transformer Connect the power supply, the secondary side is connected in series with the capacitor voltage divider; the analog capacitor on the power supply side is connected in parallel with the capacitor voltage divider; The negative terminal of the analog capacitor is connected to ground. The invention can truly simulate the electromagnetic disturbance process and the ground potential rise process generated by the opening and closing process of the isolating switch, and can output a high-intensity electromagnetic field of 1.1 MHz; it has convenient assembly, simple operation, safe test and high precision.
Owner:STATE GRID CORP OF CHINA +2
An Efficient Catheter Design Method
ActiveCN103963948BImprove computing efficiencyEfficient design methodPropulsive elementsSystems designEngineering
The invention discloses a method for designing an efficient duct and relates to the field of designing of a ship propelling system. Ducted propellers are applied to ships with heavy loads more and more widely. A duct is one of key components of the ducted propeller. The research direction can be that the efficient ducts are found, so that the method for designing the efficient duct is provided and based on a duct parameterization expressing method. According to the efficient duct designing method, the linetype of the duct is expressed in a parameterized mode, and the efficient duct is designed according to a CFD calculation method. By the adoption of the method for designing the efficient duct, the efficient duct can be conveniently and rapidly designed.
Owner:中国船舶重工集团公司第七〇二研究所
Video clip interception method and system, computer equipment and readable storage medium
PendingCN113747238AEfficient design methodImprove work efficiencySelective content distributionComputer equipmentEngineering
The invention relates to a video clip interception method and system, computer equipment and a computer readable storage medium, which are designed by adopting a brand new method, and the method comprises the following steps: firstly, carrying out gesture detection on video frames by applying a gesture detection model to obtain each to-be-processed frame sequence number containing gestures, and further obtaining each continuous video frame group; updating each continuous video frame group in a mode of supplementing missing frame serial numbers to obtain each video clip; in this way, the gesture video clips are obtained, the whole design method is efficient and simple, the obtained gesture video clips have accurate moments and are prepared for synthesizing the long video, and the working efficiency of video interception is effectively improved.
Owner:北京跳悦智能科技有限公司
A circuit and method for solving the loss of lock and wrong lock of broadband mixing phase-locked loop
ActiveCN111525923BShorten lock timeRobust Design MethodPulse automatic controlIntermediate frequencyTerminal voltage
The present application discloses a circuit and method for solving the loss-of-lock and wrong-lock of broadband mixing phase-locked loops, and relates to the technical field of microwave frequency synthesis, wherein the circuit includes: a phase detector, a loop filter, a voltage-controlled oscillator, a broadband Mixer, voltage preset circuit, clamping circuit and single-pole single-throw switch; the output end of the phase detector is connected with the input end of the loop filter, and the output end of the loop filter is respectively connected with the The input end of the voltage-controlled oscillator, the output end of the voltage preset circuit, the output end of the clamping circuit are connected to one end of the single-pole single-throw switch, the other end of the single-pole single-throw switch is grounded, and the voltage-controlled oscillator The output terminal of the detector outputs a signal, and after the signal is mixed with the local oscillator input signal through the broadband mixer, a mixed intermediate frequency signal is obtained, and the mixed intermediate frequency signal is input to the other input terminal of the phase detector. The application can quickly pull the initial frequency difference of the phase-locked loop into the locking band of the frequency phase detector, effectively reducing the locking time.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
A Dune Imitation Microstructure with Efficient Air Drag Reduction Function and Its Optimal Design Method
ActiveCN109543362BAlleviate excessive energy consumptionEfficient air drag reduction functionDesign optimisation/simulationSpecial data processing applicationsFlight vehicleDesign cycle
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A Design Method of High Performance Absorber Based on Scaling Theory
ActiveCN107968265BAchieve absorptionRapid designDesign optimisation/simulationSpecial data processing applicationsImpedance propertiesEngineering
Owner:SHANGHAI RADIO EQUIP RES INST
Machine learning method, system and equipment for metasurface lens design and medium
PendingCN114638168ARapid designEasy to industrializeDesign optimisation/simulationEngineeringArtificial intelligence
The invention relates to a machine learning method, system and device for metasurface lens design and a medium, and the method comprises the steps: obtaining a relation between basic attributes of functional elements and optical effects which can be generated by the functional elements through constructing and training a neural network, and building a performance database of the functional elements; and optimizing the required target function element in the performance database by using a particle swarm optimization algorithm to complete the design of the metasurface lens. Compared with the existing metasurface lens design related to machine learning, the machine learning method provided by the invention is the only method for determining the excellent performance of the designed metasurface lens through experimental verification, and the performance of the metasurface lens designed by the method is higher than that of the metasurface lens designed by a traditional numerical method.
Owner:TSINGHUA UNIV
SIP soft terminal supporting WEB service and multiple browsers and working method thereof
The invention discloses a working method of an SIP soft terminal supporting a WEB service and multiple browsers. The soft terminal is a multimedia terminal of which various interfaces for supporting the WEB service and multiple browsers are configured on the conventional desktop and which uses a webpage browser as an operation carrier. The soft terminal is provided with a JavaScript interface and a soft terminal assembly module, wherein the JavaScript interface is provided with a soft terminal builder and a soft terminal expansion interface; and a soft terminal functional module is packaged as a soft terminal assembly module by using a browser adapter interface. Compared with the conventional soft terminal, the SIP soft terminal has the advantages that: the building of the soft terminal assembly module is triggered by a JavaScript script and finally the soft terminal is embedded in the browser, the trouble of manual installation by the user is saved and a technique for the embedment in the browser is mature and is easy to realize; an operation platform set for developing WEB expansion services, which is a JavaScript-based bidirectional calling interface is provided for a programmer, the working details of a bottom layer soft terminal module is shielded, and the development of rich WEB services satisfying the individual needs of customers by the programmer is made extremely convenient.
Owner:BEIJING UNIV OF POSTS & TELECOMM
A Design Method of General Parameters of Solid Rocket Motor
ActiveCN111783251BSimple design methodEfficient design methodGeometric CADDesign optimisation/simulationSimulationSurrogate model
The invention provides a method for designing overall parameters of a solid rocket motor, which includes obtaining the task target, adopting the optimized Latin hypercube experiment design method to generate initial sample points in the design space; inputting the initial sample points into the engine performance simulation model to obtain the initial sample points Constraints and objective functions corresponding to the points; according to the initial training samples formed by the initial sample points and the constraints corresponding to the initial sample points and the objective function, construct the proxy model of the objective function and constraints; use the differential evolution algorithm to optimize the proxy model process and output the optimal sampling point; input the optimal sampling point as a new sampling point into the engine performance simulation model, and output the optimal engine structural design parameters according to the convergence conditions. By adopting the method of the invention, the structural parameter design with optimal comprehensive performance can be obtained, and the overall design efficiency and comprehensive performance of the solid rocket motor can be significantly improved.
Owner:NAT UNIV OF DEFENSE TECH
Satellite vibration isolation/reduction support made of chopped carbon fiber reinforced thermoplastic composite material
ActiveCN114476145AIncrease freedomEfficient design methodCosmonautic vehiclesNon-rotating vibration suppressionInjection molding processManufacturing engineering
The invention provides a satellite vibration isolation / reduction support made of a chopped carbon fiber reinforced thermoplastic composite material, and relates to the technical field of lightweight design and manufacturing of aerospace and the like, the support mainly comprises a middle cylinder area and four bridge type supporting leg areas, and the two parts are connected through bolts; considering the limitation of the molding process, the stent configuration is further optimized, and the stent structure is prepared by using an injection molding process. Meanwhile, the satellite vibration isolation / reduction support made of the chopped carbon fiber reinforced thermoplastic composite material can be used for large loads and complex working conditions, and the connectivity, the overall strength stability, the vibration isolation performance and the service life of the support all meet the design requirements. The invention provides an efficient optimal design and manufacturing method for engineering manufacturing of thermoplastic composite materials, and the satellite vibration isolation / reduction support manufactured by the method is low in cost, high in practicability and easy to produce on a large scale.
Owner:DALIAN UNIV OF TECH
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