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137 results about "Parallel design" patented technology

A parallel design, also called a parallel group study, compares two or more treatments. Participants are randomly assigned to either group, treatments are administered, and then the results are compared.

Split ring metamaterial unit-based dual-frequency circularly polarized plane reflective array antenna

The invention discloses a split ring metamaterial unit-based dual-frequency circularly polarized plane reflective array antenna. The antenna is provided with a dual-frequency composite plane reflective array and a circularly polarized horn feeding source arranged below the dual-frequency composite plane reflective array, wherein the reflective array comprises grounding metal, an interlayer dielectric substrate, and a metal split ring array plane which is formed by low-frequency and high-frequency split ring units in alternate arrangement and has a center winding two-dimensional array structure; the array plane adopts a multi-partition sub-array parallel structure; and the feeding source comprises a rectangular waveguide, a rectangular waveguide transitional section, a circular waveguide with angle of chamfer, a circular waveguide transitional section, and a circular opening waveguide, wherein the opening of the circular opening waveguide is changed from narrow to wide. The working bandwidth of the reflective array can be improved based on the multi-resonant characteristic of the split ring metamaterial units; by virtue of the multi-partition sub-array parallel design method, the modeling speed and efficiency of the array plane can be effectively improved; and partition processing and shaping of the large-scale plane array can be facilitated.
Owner:SHANGHAI RADIO EQUIP RES INST

Non-linear model prediction control method based on quantum particle swarm optimization

The invention relates to the field of unmanned vehicle control, and provides a parallel design scheme using quantum particle swarm optimization, to ensure that the control output meets the physical constraints of the vehicle and the comfort requirement for a human body so as to enable the vehicle to preferably adapt to the current road condition. The technical scheme of the parallel design schemeusing quantum particle swarm optimization includes the steps: establishing a kinetic model based on an unmanned vehicle, and performing discretization on the kinetic model; based on the above step, constructing a generalized cost function with a punishment item and an encouragement item by using a generalized Lagrangian multiplier so as to convert the constraint problem into a nonrestraint problem; and performing parallel design of quantum particle swarm optimization, performing optimized solution on the cost function of model prediction control by means of the parallel design to obtain a series of controlled variables, and finally acting the first component of the controlled variables on the vehicle. The parallel design scheme using quantum particle swarm optimization is mainly applied tothe unmanned vehicle control occasion.
Owner:TIANJIN UNIV

Basin rainfall monitoring wireless sensor network node optimization layout method

InactiveCN106257948AImprove efficiencyOptimized layout results are reasonableNetwork topologiesNetwork planningRegression analysisLongitude
The invention relates to a basin rainfall monitoring wireless sensor network node optimization layout method comprising the steps of correlation calculation; regression analysis; redundant site removing; additional arrangement of sites; additionally arranged site layout optimization calculation; and similarity calculation so that the optimal scheme of site layout can be obtained. The conventional site extraction method is improved, site network analysis is performed on existing rainfall site points based on the improved site extraction method, the redundant sites are removed, based on which the limitation of the road network on the feasibility of the site layout is directly considered, an optional area for additional arrangement of the sites is determined, the sites are additionally arranged in the optional area, a site layout optimization model is established with regression Kriging variance acting as a target function by comprehensively utilizing the correlation between the target variable rainfall and latitude and longitude, elevation, gradient, slope direction and other environmental variables, and the optimized layout of the rainfall monitoring sites is realized by solving the site layout optimization model in a high-performance way based on a parallel designed simulated annealing algorithm.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

ICD (Interface Control Document) integrated management tool

The invention provides an ICD (Interface Control Document) integrated management tool. The ICD integrated management tool (namely an internal integrated design tool) consists of a definition design tool, a version maintenance tool, an interface output conversion tool and a system authority review tool, and is connected with a database management tool through a local area network, wherein the definition design tool is used for setting input and output of each module of a project management system and a bus management system in a grading manner in a visual design mode and an intuitive bytes and bit fields parallel design mode; the version maintenance tool forms a whole set of finished version specifications for ICD maintenance by virtue of different version repositories generated in an ICD; the interface output conversion tool is used for converting the ICD into an XML (Extensive Makeup Language) document describing the ICD by virtue of an XML document output system, and provides a whole set of complete conversion interface; and the system authority review tool guarantees the hierarchical authority and the confidential level of the ICD. By virtue of the ICD integrated management tool, the design of the ICD can be simpler, the management of the ICD can be more systemized, and the maintenance of the ICD can be more traceable.
Owner:10TH RES INST OF CETC

Spiral centrifugal fan and air treatment device

The invention provides a spiral centrifugal fan. A centrifugal wind wheel of the centrifugal fan is located at the center position of a centrifugal wind wheel shell. One or more spiral air flues are arranged on the inner wall of the centrifugal wind wheel shell. The spiral air flues are located on the periphery of the centrifugal wind wheel, and air inlets of the spiral air flues are located in the radial outer side of the centrifugal wind wheel. Blades of the centrifugal wind wheel incline relative to the rotating axis of the centrifugal wind wheel. Air exhausted by the centrifugal wind wheel is forwards guided spirally through the spiral air flues. The spiral centrifugal fan has the beneficial effects of an axial flow fan and the beneficial effects of a centrifugal fan, axial air discharging can be achieved, and the beneficial effect of the high wind pressure of the centrifugal fan is achieved as well. Meanwhile, the noise of the spiral centrifugal fan is lower than that of the centrifugal fan, the size of the spiral centrifugal fan is smaller than that of the centrifugal fan, and the spiral centrifugal fan is noiseless, high in wind pressure, small in size and large in wind volume. The spiral centrifugal fan can serve as a ventilator, the spiral centrifugal fan can also serve as an air purifier when provided with a purification module, the spiral centrifugal fan can serve as a fan heater when provided with an electric heating module, and the spiral centrifugal fan can serve as a fresh air fan due to the parallel design. The wind direction is the axial direction, and after wind pipe connecting pieces are arranged, an inner wind pipeline and an outer wind pipeline are connected very conveniently.
Owner:柴俊麟

Virtual maintenance based maintainability analysis method for aircraft part

InactiveCN105045989AFind design flaws in timeMaintainability Design ImprovementsSpecial data processing applicationsStandardizationQualitative property
The invention discloses a virtual maintenance based maintainability analysis method for an aircraft part. Firstly, a maintenance attribute value of the to-be-analyzed aircraft part is quantitatively determined, wherein the maintenance attribute value comprises human factor engineering, reachability, simplified design, modularization, standardization and interchangeability, and testability; secondly, a natural language is quantitatively processed; thirdly, according to the obtained attribute value, performing weighted calculation on a comprehensive maintainability attribute value of the to-be-analyzed aircraft part; and finally, according to the comprehensive maintainability attribute value, calculating degree of membership, and obtaining comprehensive maintainability evaluation and partial evaluation of the to-be-analyzed aircraft part. According to the method, on the basis of determining maintainability influence attributes, each maintainability influence attribute is analyzed and inspected, an evaluation method for maintainability quantitative requirements is proposed, and parallel design-oriented maintainability qualitative analysis and evaluation are realized, so that design defects can be discovered in time and the improvement on maintainability design is facilitated.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Large-current low-forward-voltage-drop silicon carbide Schottly diode chip and preparation method thereof

PendingCN108682695AForward voltage drop increasesOptimizing Forward Voltage DropSemiconductor/solid-state device manufacturingSemiconductor devicesP–n junctionPolyimide membrane
The invention provides a large-current low-forward-voltage-drop silicon carbide Schottly diode chip. The large-current low-forward-voltage-drop silicon carbide Schottly diode chip comprises a back laminated metal electrode, a front laminated metal electrode, an ohmic contact layer, a substrate, a first epitaxial layer, a second epitaxial layer, a P-type protecting ring, a N-type ion implanted layer, a Schottly metal Pt layer, an annular passivation layer and an annular polyimide film. The invention further provides a preparation method for the large-current low-forward-voltage-drop silicon carbide Schottly diode chip. The preparation method is capable of, through using a parallel design of a PN junction and a Schottly junction, double-layer epitaxial growth, and ion implantation and nitrogen ion doping, generating a large implantation effect in a large current by using a Schottly metal Pt, reducing the electrical resistivity of the epitaxial layer, realizing the manufacture for the large-current low-forward-voltage-drop silicon carbide Schottly diode, thereby overcoming the defects in the prior art that the forward voltage drop of a device is reduced as well as the reverse leakagecurrent of the device is increased while a low barrier metal is selected and a chip area is increased, a rate of finished products is reduced, and the manufacturing cost is increased.
Owner:JINAN JINGHENG ELECTRONICS

Method for implementing airborne variable pressure hydraulic energy system

The invention discloses a method for implementing an airborne variable pressure hydraulic energy system. A hydraulic energy system is provided with a hydraulic pump, a hydraulic energy management control unit, and a vibration, temperature, pollution and pressure sensor group, wherein the management control unit consists of a hydraulic energy controller and a hydraulic pump controller; the hydraulic energy controller receives a plane bus signal and a flight state signal transmitted by a flight control system and sends a working state command to the hydraulic pump; the vibration, temperature, pollution and pressure sensor group senses the working state of the hydraulic pump and transmits monitored data to the hydraulic pump controller and performs fault diagnosis and fault isolation on the hydraulic pump; and the airborne variable pressure hydraulic energy system adopts a dual-pump parallel design mode. By using the method, the system can automatically regulate output flow and output pressure according to external load demand and can convert and work reliably in a plurality of working modes, thereby improving the energy utilization efficiency of a hydraulic system, reducing the thermal power loss of the system, and prolonging the service lives of the hydraulic system and accessories.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Method for cooperatively computing and accelerating pre-stack time migration of earthquake by using CPU (Central Processing Unit)/MIC (Microphone)

The invention provides a method for cooperatively computing and accelerating pre-stack time migration of an earthquake by using a CPU (Central Processing Unit)/MIC (Microphone), and relates to the field of high-property computing. According to the method, a CPU and MIC heterogeneous framework is used; a CPU is in charge of performing FFT (Fast Fourier Transform) computing, reading seismic channel data, performing process control and scheduling, and further participating in PSTM (Photon Scanning Tunneling Microscope) computing; the MIC is used for only performing the PSTM computing, and simultaneously performing CPU and MIC cooperative computation and common computation in an asynchronous parallel idea and dynamic load balance manner; and the integrated design comprises the following three aspects: parallel design of a PSTM computation partial serial algorithm, a PSTM integrated logic structural design and a CPU and MIC asynchronous computation design. The method provided by the invention has the beneficial effects that the PSTM properties can be improved by using the CPU/MIC cooperative computation; the building cost and management, operation and maintenance costs of a machine room can be reduced; and the simple realization and the low desired development cost can be realized.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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