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3273 results about "Design technology" patented technology

Design technology, or D.T., is the study, design, development, application, implementation, support and management of computer and non-computer based technologies for the express purpose of communicating product design intent and constructability. Design technology can be applied to the problems encountered in construction, operation and maintenance of a product.

System and method for lithography simulation

There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a technique of, and system for simulating, verifying, inspecting, characterizing, determining and/or evaluating the lithographic designs, techniques and/or systems, and/or individual functions performed thereby or components used therein. In one embodiment, the present invention is a system and method that accelerates lithography simulation, inspection, characterization and/or evaluation of the optical characteristics and/or properties, as well as the effects and/or interactions of lithographic systems and processing techniques. In this regard, in one embodiment, the present invention employs a lithography simulation system architecture, including application-specific hardware accelerators, and a processing technique to accelerate and facilitate verification, characterization and/or inspection of a mask design, for example, RET design, including detailed simulation and characterization of the entire lithography process to verify that the design achieves and/or provides the desired results on final wafer pattern. The system includes: (1) general purpose-type computing device(s) to perform the case-based logic having branches and inter-dependency in the data handling and (2) accelerator subsystems to perform a majority of the computation intensive tasks.
Owner:ASML NETHERLANDS BV

Temperature rise analytical method for predicting temperature of permanent magnet in permanent magnet synchronous motor

InactiveCN101769797AAccurate predictionAvoid difficulties such as air gap temperature measurementThermometerDynamo-electric machine testingModel selectionPermanent magnet synchronous motor
The invention relates to a temperature rise analytical method for predicting temperature of a permanent magnet in a permanent magnet synchronous motor (PMSM), belonging to the application electrical engineering design field; the method is characterized in that: distributed heat source of a motor is analyzed by a filed-circuit compact coupling method, comprising eddy current loss in the permanent magnet, iron loss in an iron core and copper loss in armature; on the consideration of precision requirements, the coupling analysis of a magnetic field and a temperature filed can be realized by single-way coupling mode. A thermal model of the permanent magnet synchronous motor is built based on a mixing method of a novel equivalent heat network and a finite element, heat parameters are rationally selected by adopting a combining mode of experimental measurement and empirical formula, the heat transferring coefficient and cooling condition of the motor are described completely, a stator and a rotor can be systematically combined by adopting air gap joints in the heat network, the stator and rotor unified temperature rise model is formed, the difficulty of measuring air gap temperature is avoided, material parameters are adopted at the practical working temperature, so as to lead the analysis to be rational; the accurate and optical method for predicting the temperature of the permanent magnet is realized by special correction processing in experimental links; in addition, the design method is used to give suggestions for model selection of the permanent magnet material in the motor.
Owner:李虎

Non-contact type human body measuring method for clothing design

The invention relates to a human body measurement method, in particular to the non-contact human body measurement method for clothing design which belongs to the technical field of clothing design. The digital images of the front surface and the side surface of the human body are firstly obtained; the extraction of the image edges are carried out by adopting the color segmentation, the best threshold segmentation, the hole filling, the opening operation and the pixel communication image processing method, thereby obtaining the image edges of the front surface and the side surface of the human body; the human body measurement feature points and the lines are determined, the corresponding height and width measurement data of the human body for the clothing design are obtained by calculation; a mathematical model is established by applying the width and the thickness data of the human body to obtain the related circumference data, and the human body circumference measurement data for the clothing design is obtained by BP neural network simulation and regression prediction treatment. The method has simple device, convenient operation and low measurement cost, thereby being capable of meeting the requirements on the design and the production of the clothing industry and having broad popularization and application prospects.
Owner:SUZHOU UNIV

Method for generating three-dimensional panoramic interior design scheme based on data union platform

The invention relates to the technical field of interior design, and discloses a method for generating a three-dimensional panoramic interior design scheme based on a data union platform. The method comprises the following steps of: (1), acquiring all kinds of materials for interior design needed by clients; (2), selecting all kinds of models through data union cloud design client side software, and adjusting the models in combination with designs of designers; (3), forming a digital hardcover design scheme including budget and purchase link; (4), outputting all kinds of digital effect pictures in different stages of interior finishing; and (5), making three-dimensional panoramic stereo display of the interior digital hardcover scheme to consumers through display equipment of a liquid store. By means of the method disclosed by the invention, the design scheme for uniting design and a supply chain as one and realizing what you see is what you get is provided for big household industries; various design software technical link points are broken through; multilateral link of various industries in the household field can be realized; a big household production line is formed; consumers personally participate in the design; therefore, the marketing cost is reduced; and the design cost is saved.
Owner:浙江数联云集团有限公司

A low-sidelobe emission directional diagram design method improving DOA estimated performance of a MIMO radar

ActiveCN105467365AVector number reductionGuaranteed approximationWave based measurement systemsEngineeringRandomization
The invention relates to a low-sidelobe emission directional diagram design method improving DOA estimated performance of a MIMO radar. The method comprises the following steps: setting an interesting area; ensuring column vectors of a beam space weighting matrix to satisfy pairing characteristics; ensuring signals at a receiving end to satisfy rotation invariance; constructing an optimized model of a beam space weighting matrix with directional diagram coupling characteristics, rotation invariance of the signals and equality of various array element emission powers as constraint conditions; introducing an auxiliary variable and relaxing a rank-1 constraint to be a positive semidefinite constraint through utilization of the semidefinite relaxing technology; and through utilization of an interior point method, obtaining an optimal solution of the relaxing problem; through a Gaussian randomization method, the beam space weighting matrix is solved; and DOA estimation is carried out on a target at the receiving end through the ESPRIT algorithm. The MIMO radar waveform design technology which is good in performance in the invention can raise the signal to noise ratio at the receiving end, provide an important theoretical basis and a specific realization method for raising the precision of MIMO radar angle estimation.
Owner:THE PLA INFORMATION ENG UNIV

Knowledge-engineering-based automatic scheme generation and evaluation system and method

The invention discloses a knowledge-engineering-based automatic scheme generation and evaluation system. The automatic scheme generation and evaluation system comprises a project management subsystem, a demand management subsystem, a product database subsystem, a collaborative design subsystem and an electronic product design technology platform, wherein the project management subsystem is in charge of providing solving ideas and tools; the demand management subsystem is used for decomposing the product design demand, converting into task indicators and multi-level task sequences, realizing dependence mapping and providing real-time monitoring of the indicators; the product database subsystem is used for managing design data and setting data standards and regulations; the collaborative design subsystem plays the role of a bridge; the electronic product design technology platform is in charge of generalizing and managing typical data, design methods and digital prototype models of all products and pushing information to the collaborative design subsystem. A method comprises the steps of knowledge extraction and classification, professional knowledge base setting, knowledge-engineering-based platform construction and automatic design scheme generation and evaluation. According to the invention, knowledge engineering is introduced into the electronic product design, so that the reuse rate of knowledge and other resources is effectively improved, automatic generation and evaluation of product schemes are realized, the product research and development time is shortened and the intelligence degree is high.
Owner:SICHUAN UNIV +1

Recognition method of critical geometrical error source of machine tool

The invention discloses a recognition method of a critical geometrical error source of a machine tool and belongs to the technical field of machine precision designing. The recognition method of the critical geometrical error source of the machine tool is characterized by comprising the steps that the machine tool is abstracted into a multi-body system according to the structure and motion characteristics of the machine tool, relevance of parts of the machine tool is described by a topological structure and a low-order body array, a generalized coordinate system is built in the multi-body system, coupling relationship of error amounts of parts of the machine tool is described by a homogeneous transformation matrix, a characteristic matrix and a motion equation of the relative movement between two adjacent bodies of the machine tool are elicited, a precision model of a machining center is built, an ordinary mathematical model used for error sensitivity analysis of a four-shaft machine tool is built with a matrix differential method according to the precision model of the precision horizontal machining center, influence degrees on the whole space error of all error elements are compared by calculating the geometrical error sensitivities of all parts, and finally the critical error source influencing the machining precision of the machine tool is recognized.
Owner:BEIJING UNIV OF TECH +1

Flex wing minisize aerial craft fluid-solid coupling numerical value emulation method

The invention belongs to the flex-wing miniature aircraft auxiliary design technical field. The invention is characterized in that: the following modules which are respectively a structure-flow field entity modeling and basic assumption module, a k-epsilon turbulent flow model flow field analysis module, a linear elastic structure analysis module and a structure-flow field coupling interface module are set in a computer, wherein, the structure-flow field entity modeling and basic assumption module is provided with flexible wings and a three-dimensional model in a circumferential flow field; the k-epsilon turbulent flow model flow field analysis module is used for obtaining distribution pressure on a fluid-solid coupling surface of the flow field under different flight conditions; the linear elastic structure analysis module obtains displacement and speed of flex-wing structure meshes; the structure-flow field coupling interface module obtains deformation of the meshes of the flow field from the obtained displacement of the flex-wing structure meshes, and the deformation is taken as an input condition of the k-epsilon turbulent flow model flow field analysis module and then outputted; distribution pressure on wing surfaces of the flexible wings is obtained according to the distribution pressure of the flow field and taken as an input condition of the linear elastic structure analysis module and then outputted. The flex-wing miniature aircraft has the advantages that: higher accuracy than two dimensional analysis is guaranteed and simultaneously the efficiency of simulation calculation can be improved.
Owner:TSINGHUA UNIV

Novel high-throughput micro-channel reactor provided with multiple layers of spirally winding tubes

The invention relates to the technical field of the design of chemical reactors and discloses a novel high-throughput micro-channel reactor provided with multiple layers of spirally winding tubes. The reactor mainly comprises reactant inlet and outlet sections, inlet and outlet glands, flanges, inlet and outlet tube plates, stainless steel capillary tubes, a fixed pad strip, a drum, a winding drum, constant-temperature medium inlet and outlet sections, baffles, left and right supports, a central support tube and a support piece, wherein two ends of the central support tube are connected with the inlet and outlet tube plates, and the winding drum and the central support tube are located on a same axis and welded and connected through the support piece; the stainless steel capillary tubes spirally wind around the winding drum in a multi-layer manner, spiral directions of adjacent winding layers are opposite, multiple reaction tube bundles which take the winding drum as the circle center and have different circle diameters are formed, and two ends of each stainless steel capillary tube are connected onto the inlet and outlet tube plates respectively; the inlet and outlet glands are connected with the inlet and outlet tube plates respectively through the flanges. The reactor has the advantages of high throughput, high heat transfer capacity, high synthetic rate, safety, high efficiency, low machining cost, capability of realizing continuous production, easiness in parallel enlargement and the like.
Owner:NANJING UNIV OF TECH

Low-elasticity-modulus titanium-based jawbone implant and preparation method thereof

The invention discloses a low-elasticity-modulus titanium-based jawbone implant and a preparation method of the implant. The preparation method mainly comprises the six steps that CT-scanned jawbone section image data are obtained; a rebuilt jawbone three-dimensional digital model is obtained; a jawbone implant digital model of a multi-hole structure is designed and obtained; a machining file of slice layered cross section data is obtained; the selective laser melting technology is adopted for preparing the jawbone implant; and surface treatment is carried out on the implant. The implant is used for treating a patient with jawbone defects, and the CAD digital design technology is used in the design of the implant; and jawbone repairing individualized design and multi-hole support structure design are combined, and through the selective laser melting technology, the low-elasticity-modulus titanium-based jawbone implant is prepared. The implant can meet the individual needs of the patient, and meanwhile can reduce the elastic modulus; and the problems of stress concentration and stress shielding of a traditional jawbone implant are solved, the preparation time is shortened, and the machining difficulty and the production cost are reduced.
Owner:东莞市唯信三维科技有限公司

Embedded oilwell parameter real-time acquisition system

InactiveCN101514624AFast data collection and processing capabilitiesEasy to installSurveyTransmission systemsInformation processingOperational system
The invention discloses an embedded oilwell parameter real-time acquisition system, relates to the fields of information technology and automation and information processing technology, and is an oilwell data real-time acquisition and storage device completed by ARM embedded design technology. The acquisition system consists of an ARM acquisition unit, a wireless communication module, a power supply and a sensor, and combines an embedded operation system with opening source codes and embedded application programs to form an embedded data acquisition and storage terminal. The acquisition system can autonomously complete set data acquisition and storage tasks, perform communication with far end computers in a wireless mode, be used as a distributed monitoring terminal of an oilwell production control platform in ocean or desert environment, and acquire and store multiple kinds of data of the sensor such as pressure, temperature, and the like, has the maximum storage capacity of tens of millions of data records, and can improve the real-time characteristic of parameter monitoring in the oilwell production process, reduce occurrence possibility of blowout accidents, and improve working benefits of oil exploration and safety production.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
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