Papers by Keyword: Automatic Design

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Authors: Xiao Gang Wang, Xin Zhan Li, Yue Li
Abstract: In this article based on databases of 3D female bodies emulator, 3D jacket emulator, textile material parameters, historical photos and pattern parameters, an automatic pattern making and its 3D emulator model support system of woman warm jacket was developed. In this system different databases were set up and mathematic models of body block and pattern were founded, which they were the main algorithms of program. Program of connecting databases for pattern making was developed and its 3D emulator model was realized synchronization. Based on 20 variables for the female body, the net body block is first be made for individuality and its 3D model also is offered. Then according to the parameters from textile material database and pattern database, pattern is automatically made on the base of the body block. At the same time its 3D jacket model can be presented to user by this system. In this system, managing and connecting different types of databases were come true. This new automatic designing method differs with the traditional pattern making, which introduced the database technology to make works automatically and present 3D emulator model synchronously. This open system is offered user with spreading the database possible and connecting with ready CAD system.
1073
Authors: Xin Li Bai, Yu He Li, Sheng Tong Zhou
Abstract: Aimed at disadvantages of tedious work of the Gear Transmission design, Visual Fortran is taken as the development platform, and design data are stored and managed by self-developed program and database technology. A CAD System for Gear Transmission named GTCS is researched and developed. The system integrates designing and drawing in a body, and fully uses the powerful numerical calculation function of Visual Fortran and the function of Windows interface design, as well as the secondary development function of AutoCAD and database technology, etc. The software can realize designing and calculating of involute gear transmission mechanism, automatic drawing and various kinds of results post-processing. Results show that the research results greatly improved the efficiency and quality of the design. The result documents are easily accessible by other structural analysis software (such as SolidWorks, ANSYS, ADINA, etc) and similar design software, and convenient to use for the follow-up work.
285
Authors: Yu He Li, Peng Xu, Xin Li Bai
Abstract: Aimed at disadvantages of tedious work of the gear teeth design, Visual Fortran is taken as the development platform, and design data are stored and managed by self-developed program and database technology. A CAD System for Gear Teeth named GTCS is researched and developed. The system integrates designing and drawing in a body, and fully uses the powerful numerical calculation function of Visual Fortran and the function of Windows interface design, as well as the secondary development function of AutoCAD and database technology, etc. The software can realize designing and calculating of involute gear teeth and transmission mechanism, automatic drawing and various kinds of results post-processing. Results show that the research results greatly improved the efficiency and quality of the design. The result documents are easily accessible by other structural analysis software (such as SolidWorks, ANSYS, ADINA, etc) and similar design software, and convenient to use for the follow-up work.
245
Authors: Ying Jiang, Jie Liu
Abstract: Secondary develop system can realize design automation of the common parts, so that software system can automatically inquire the chart and get data, then this could really release design personnel and improve the design efficiency. By secondary develop system of stirred tank users can respectively carry on the design according to their own needs. So secondary develop system has the function of automatic generation graphics, and can generate CAD drawings complying with the design requirement, so it reflected the intelligent performance of the design system. Secondary develop system is able to complete the automatic design of common parts, and can greatly improve the quality and efficiency of design, so it has very important use value. This design realizes the function of automatic graphics generation of transmission of stirred tank, and can generate structure design of common belt wheel.
711
Authors: Emil Oanta, Cornel Panait, Gheorghe Lazaroiu, Anca Elena Dascalescu
Abstract: The paper presents an original method to enhance the productivity of the design activity based on a dimensioning stage which integrates information from various sources: tabular data, diagrams, experimental data and others. The integration of such data in an analytic way is based on an original data processor which interpolates data and outputs diagrams, and outputs information regarding the laws of variation expressed as comma separated values data files, as well as automatically generated source code libraries in C++, Java and MATHLAB/GNU Octave. This automatically generated code is optimized in terms of execution time and it was verified in several applications. The data processor allows the user to visually verify the output data accuracy. The paper also presents some of the applications of the data processor: automatic design, method to enhance the accuracy of computer based calculus for both analytic and numerical methods, conversion of the discontinuous experimental data into laws of variation and experimental data processing in applied elasticity. There are several directions of future research, such as: a more general mathematical approach, development of a more general computer based instrument with increased flexibility and accuracy. Also, a complex software for applied elasticity calculi based on the results of the data processor is under development. Implementation of these applications in commercial CAD/CAE applications is another direction of research.
1017
Authors: Naoki Arai, Nobukazu Takai, Biswas Sumit Kumar, Haruo Kobayashi
Abstract: In this paper, we propose a method that automatically designs an analog lter tosatisfy target speci cation. Using a genetic algorithm, circuits that satisfy target speci cationcan automatically be identi ed. Moreover using this method output of any phase can be achievedfor the analog lter working in any frequency band. For example, this method has been usedto automatically design the analog lter that generates constant phase of -/2[rad] at terminalVout1 and /2[rad] at terminal Vout2 for a frequency band of 100MHz to 300MHz, and also phaseof -/6[rad] and /6[rad] for a frequency band of 100MHz to 300MHz. In both cases relativeerrors of target phase was less than 5%.
187
Authors: Xian Hai Luo, Liang Zhen Li
Abstract: Regarded planar linkage mechanism kinematic target and execution of kinematic pair constraint reaction restrictions as the quantitative objectives, established the comprehensive dynamic design fitness function with the distance between a kinematics target and execution of a set of practical movement points, and the difference between actual constraint reaction of kinematic pair and its limit. According to multi-branch tree expression and random configuration method to create mechanical initial population, driven by the fitness function, made the mechanical population evolution towards the target requirements by the use of copy, crossover and mutation operators of genetic program. In the evolutionary process, inserted kinematics and dynamics automatic analysis technique, design examples indicated that using a genetic program can search parallel in different mechanical configuration space, dimension space and inertia space, automatically searched to such kinds of mechanisms approximate kinematics target and dynamics requirements, thus fulfilling the dynamics automatic design.
2447
Authors: Xian Hai Luo, Liang Zhen Li
Abstract: Given kinematics quantitative target and requirements to executive links of a planar linkage mechanism, regarded the distance between the point set of the quantitative target and the actual’s as a whole metrics approximate design requirements, and taken this metrics as kinematics design fitness function, according to multi-branch tree expression and random configuration method to create mechanical initial population made the mechanical population evolution towards the target requirements by the use of copy, crossover and mutation operators of genetic program. In the evolutionary process, inserted kinematics automatic analysis technique, design examples indicated that using a genetic program can search parallel in different mechanical configuration space and dimension space, automatically searched to such kinds of mechanisms approximate kinematics target and requirements, thus fulfilling the kinematics automatic design.
2305
Authors: Hai Na Rong, Xiao Li Huang
Abstract: As a branch of natural computing, membrane computing has attracted much attention in various disciplines. But the programmability of membrane computing models is an ongoing and challenging issue in this area. This paper develops the automatic design of membrane computing models through predefining the membrane structure and initial objects and introducing a modified quantum-inspired evolutionary algorithm with a local disturbance to select an appropriate subset from a redundant evolution rule set. The main idea of the presented method is that multiple membrane computing models, instead of only one model like in the literature, can be designed by applying one redundant evolution rule set. The effectiveness of the design method is verified by the experiments.
1761
Authors: Jie Wen Li, Jian Bo Guo, Guo Bi Zhang, Bang De Li
Abstract: With the development and the widespread application of computer technology, some of the country's railway professional designing institute and software companies have introduced many culvert design application software. There are many culvert CAD system have been applied in engineering practice, but from the view of practical application and software development, there also have many shortcomings, such as the operation is inconvenient, the function is not perfect, the mapping function does not conform to the designing habits, the function of inheritance and generality is not strong, the management functions of design information and design results is lack and so on.This paper aims at the standardization; normalization characteristics of culvert designing, the parameterization culvert design method were studied, analyzed the data organization structure, the culvert length calculation method, the parametric design and drawing method, then based on them, use the object-oriented programming method, at the VC++6.0 programming platform, developed the railway culvert CAD software systems which based the ObjectARX technology.The software system which has been developed realized the engineering quantity calculation, engineering drawing and engineering quantity form output, improving the efficiency of culvert designing and mapping.
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