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Issue 2 ， 1994
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CAD a revolution in the field of design
Abstract：As a high efficiency,powerful production tool,CAD technology is impacting the traditional design way and in voking a revolution in the field of design.The characters and thetrend of CAD are introduced concisely,“what we learn from CAD” is also described in thispaper.Keywords：CAD;Virtual prototyping;Concurrent engineering- 32
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Published：2020-08-12 -
The Concept Design of Solar Ultraviolet Spectral Mornitor
Abstract：The content,method and several postprocessing thechnique of concept design used forsolar ultraviolet spectral monitor are stated. By means of CAD technique, the concept designconcerned in wireframe, surface,solid models and assembly model of the solar ultravioletspectral monitor shell has been completed.Keywords：concept design;CAD;Solar Ultraviolet spectral mornitor- 29
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Published：2020-08-12 -
The CAD Analysis Used for the Blind Zone of a Set of Detectors and the Formula of Calculating Over-lapping Angle
Abstract：The aim of this paper is to calculate the detector′blind zone. A sort of new method using the intersection of solid cone and solid sphere is presented.By means of CAD technique,the visual solid modeling and the exact data can be gotten,Finaly,the formula of calculating over-lapping angle for azimuth view field has been derived and verified.Keywords：Detector blind zone;View field over-lapping angle- 15
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Published：2020-08-12 -
Engineering Analysis and Calculation or The Primary Parameters for Mirror Drum or Space Remote-Sensing Camera
Abstract：The mirror drum is primary part of space remote-sensing camera,It has great influence upon weight oftight requirement and property of the optical system. How to use CAD technology to analysis and calculatethe primary parameters of mirror drum has been described in this pape.The way of irnproving can be carriedout.The reasonable design scheme has been obtained progressively.Keywords：Engineering analysis;deformation;Natural frequency- 52
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Published：2020-08-12 -
The Development of Optical Instrument Parametric Design Software System
Abstract：CAD new technology-parametric design is stated in this paper.Starting with advanced CAD softwares soled in the world, several basic methods for parametric modeling and some new technologies such as feature-based modeling, constraint-based modeling,variational geometry and inference sketching are described.This paper introduces optical instument parametric design system(OIPS),including its architecture,functions and features. The procedureof designing a part is illustrated for stating parametric design benefit.Keywords：Parametric design;Feature-based modeling;Constraint-based modeling;Variational geometry- 31
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Published：2020-08-12 -
A Kind of Mechanical Calculation for a Space Camera Main Mirror
Abstract：The statical analysis for the primary design of a space camera main mirror is stated Theanalysis is aimed at six conditions which consist of internal supporting, external supporting,horizontal set,vertical set and load conditions that are separately of g0 and 5g0 gravity acceleration. The displacements and strains for every element and node are calculated by means of ANSYS program, Because the solid model of the main mirror is created, the exact weight of the main mirror is gained automatically. The results show that the present design is satisfiedwith the requirements and still has some tolerance to reduce the weight. The displacementand strains of external supporting are less than the ones of internal supporting. The analysisresults have important value for improving the main mirror design.Keywords：Main mirror;space camera;FEA- 36
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Published：2020-08-12 -
Computer Aided Direct Design Method for 3D Patterns
Abstract：The realistic process of the. direct design method for 3D patterns in CAD system hasbeen described, its importance is introduced with the points,lines, plane patterns. Thismethod simulates the traditional manual design process. It is easy to be accepted and mastered, and it has attained pragmatical level in shoe CAD system.Keywords：D pattern;Direct design method;CAD technique- 38
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Published：2020-08-12 -
Talking About How to Improve the Resonance Frequency of OE Tracking & Measuring System
Abstract：This paper describes the influence applied by mechanical resonance frequency of OEtracking & measuring system to the system dynamical behaviours, The factors which influence the resonance frequency are depicted and the way to estimate and to improve the resonance frequency of design phase are also stated.Keywords：esonance frequency;Nature frequency;Damp- 43
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Published：2020-08-12 -
A Study on the Numerical Calculation and the Numerical Simulation of the Electromechanical System
Abstract：his papr deals with the numerical calculation and the numerical simulation of this system. Finite Element Method(FEM) is applied in the part of mechanical structures, while inthe part of feed-back control circuits, we used transformation function to connect input variables with output variables,then we combinate those two parts and solve the rnotion differential equations of this electromechanical system to analyse system stability for the reference toengineers and designers.Keywords：Electromechanical system;Numericl calculation;numerical simulation- 40
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Published：2020-08-12 -
Computer-Aided Engineering Analysis and Calculation of the Base Structure for the Calibration System on Ship
Abstract：In this paper, two different schemes of the base structure have been analysed and compared by means of Computer-Aided Engineering Analysis. Displacements and deformation,the angles between A and B, natural frequency have been calculated separately in the conditions of the base being slant and normal. The weakspots can be found out. The way of improving can be carried out. Through design and analysis iterration, the satisfide design scheme can be approached.Keywords：he angle bwteem A and B;stiffness;natural frequency- 47
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Published：2020-08-12 -
A Software Tool for Creating SECMAI's Dutabase Automatically by TANGO's Database
Abstract：With the theory of database design, this paper designs a software tool which is able tobuild up automatically SECMAI database through TANGO database.Keywords：Database;Relation model- 69
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Published：2020-08-12 -
Optimization of Via in PCBD
Abstract：The reduction of via is very necessary,it is useful only to show optimization of via in PCBD by an example in this paper.Keywords：Via;optimization- 34
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Published：2020-08-12 -
Study of Development Tool on Expertise System of Circuit Design
Abstract：This poper states generally the study devlopment tool on expertise system of circuitand clarifies its function,compose and application.- 51
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Published：2020-08-12 -
A Method for Expanding PCB Software Terminal
Abstract：A method of expanding PCB software terminal is proposed and applied to SECMAI software. It is proved that the method is feasible and practicableKeywords：FCB;Terminal- 43
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Published：2020-08-12 -
Development on Increasing Resolution Factor of Color Television
Abstract：Using computer and design pogram as a powerful tool, this paper studys and analyses the brightness channel circult of color-television so that the resolution factor is increased.Keywords：Image resolution;CAA- 26
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Published：2020-08-12 -
ICAP/4 Introduction of Softwoare of Circuit Simulation
Abstract：ICAP4 is recommended in this paper. It is a complete simulation system and includes 4 integrated modules, each one performing a different function, With ICAP/4,you can cut through the toughest analog and mixed signal circuit design problems with ease.Keywords：simulation;mixed signal circuit;netlist- 59
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Published：2020-08-12
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