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Issue 6 ， 1999
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Research Achievement on MS CAD
Abstract：The development of CAD tool used in the research and design of microsystems is very important. The modeling levels of a CAD system is discussed in this paper, the research situation of several CAD program at present is introduced, and also two essential problems existing in this research area are pointed out.Keywords：Microsystems;CAD;Modeling level- 21
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Published：2020-08-12 -
A Parameter Design System for Mechanical Structure of Optical Lens
Abstract：An parameter design system for mechanical structure of optical lens is introduced,the system composition and program design are interpreted in detail.The system provides guiding sense of theory and practical value for further development of CAD technology in mechanical structure design for optical lens.Keywords：Optical lens;mechanical structure;Parameter design system;CAD(Computer Aided Design)- 31
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- 9
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Published：2020-08-12 -
The Research on Feature System Based on the Integration of CAD/CAM
Abstract：A feature system based on the integration of CAD/CAM is proposed in this paper. The system infrastructure and the represention method of part information based on feature, are discussed. At last, the paper also presents the functions and performance of feature modelling & recognition subsystem, which are developed on the base of Solid Edge CAD system.Keywords：Feature;Feature Representation;Feature Recognition;Feature Modelling- 36
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- 6
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Published：2020-08-12 -
Study on Calculation Method of Curvilinear Mapping at Any Direction
Abstract：This paper introduces a novel computing method of mapping curvilinear on free formed surfaces. The method turns the sophisticated computing problem of three dimensional space into computing problem of two dimensional space with parameters, and results in improving the computing efficiency, through changing the problem of the mapping from any direction curvilinear to free formed surface into the problem of working out the intersecting points of a number of curvilinear with same parameters and general cylindrical surfaces. All of curvilinear and free formed surfaces are expressed in the same form for the utility of NURBS method, and it is advantage for the subsequent treating.Keywords：CAD/CAM;Curve modeling;Curvilinear mapping- 36
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Published：2020-08-12 -
Application of Virtual Engineering Technology in Space Optical Instrument
Abstract：The importance and characters of application in researching and developing space optical instrument by means of VE technology are introduced. And application in design、analysis and manufacture of products is preliminarily described .Keywords：space optical instrument;Virtual engineering technology- 26
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- 6
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Published：2020-08-12 -
Application of CAE in the Design of Optical and Mechanical Structure for Space camera
Abstract：The application of CAE technology plays an important and indispensable role in the design of space camera, mainly focus on the design of lightweight primary mirror, the optimum design of primary mirror's support structure as well as camera structure and in the strength and stiffness analysis of the structure .It is one of the most important means in modern design method.Keywords：CAE;space camera;Structural stiffness- 42
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Published：2020-08-12 -
Calculation and Software Design of the Orbit External Thermal Flux of a Space Optical Remote Sense
Abstract：An approach to the calculation the view factors and orbit external thermal fluxes of the sun radiation, the earth radiation and its reflection on a space optical remote sense are described on the assumption of discrete plane, and the corresponding computer program and interface program with software PATRAN are developed. The software has found application in the thermal engineering analysis of a space optical window system. Moreover, basically, it is also suitable for other space projects.Keywords：Space optical remote sense;View factor;Orbit external thermal flux;Software design- 43
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Published：2020-08-12 -
Thermal Analysis and Thermal Control Techniques of Space Camera
Abstract：The importance of thermal control technique in space camera design is set forth. Factors that influence the camera's temperature field and temperature gradients are analyzed. Estimating of thermal analysis and strategy of thermal control for space camera is studied. The work of thermal analysis and thermal design in the world these years is introduced.Keywords：Thermal control;thermal analysis;thermal design- 64
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Published：2020-08-12 -
Response of Remote Sensing Camera due to Dynamic Disturbance
Abstract：When a remote sensing camera is working in the space, it will be affected by a lot of dynamic disturbance. How the disturbance affects the image quality of camera is paid more attention. It is very important to analyze the disturbance clearly and to know the response of optical system and its optical element due to the disturbance. The space dynamic disturbance is studied detailed in this paper, finite element model of spacecraft and remote sensing camera is established, and the response of remote sensing camera and its optical elements due to the disturbance is calculated.Keywords：Remote sensing camera;Dynamic disturbance;Response- 46
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Published：2020-08-12 -
Coordinates Transformation Method on Image Motion of Dynamic Optical System
Abstract：When a space camera which is kept in a spacecraft is working in the space, spacecraft and the optical system of the camera will vibrate because of the existence of space dynamic interruption. So the image point of an object will move during the exposure. For an optical system, the result of motion of the image point will be a degradation of image quality. An analysis method on image point motion due to vibration — coordinates transformation method is discussed in this paper. To illustrate this method, the image motion was calculated due to the primary mirror vibration.Keywords：optical system;vibration;Coordinates transformation method;Image motion- 49
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Published：2020-08-12 -
Analysis of Support Structure for the Length and Round Mirror
Abstract：The scheme of length and round mirror & its basic support structure is introduced . The static analysis of mirror with support structure was made by means of FEM , The mirror is improved & its structure is selected to meet the WFE specification.Keywords：Aspherical mirror;support structure;Finite Element Method (FEM)- 41
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Published：2020-08-12 -
Multi point Support Pattern of a High Precision, Lightweight Rectangular Mirror
Abstract：The devolopment of lightweight, high resolution, visible light space remoter with wide view field has been treated as a key project to the space optics researchers. The multi point support technique of a high precision, rectangular mirror is investigated. The research method is stated emphatically.Keywords：Rectangular mirror;Support;Surface figure- 56
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- 12
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Published：2020-08-12 -
Dynamic Simulation of Injecting Mold Filling Process
Abstract：The mathematical model of injection mold filling process has been set up, based on the mathematical model of Hele shaw flow. Injection mold filling process of thermal dissipating sielter of the car has been simulated, which applying MLODFLOW injection mold filling analysis. The main problems that affect on product quality, for exemple, unfilled mold, poor meld strength have been investigated, and solved.Keywords：Injection Molding;Mold Filling;Flow Analysis- 62
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Published：2020-08-12 -
Computer Aided Analysis and Calculation of the Most Dangerous Load of Greenhouse
Abstract：By means of computer aided engineering analysis, the mechanical analysis of parabolic greenhouse on different loads was performed. The most dangerous load combination was determined so as to provide scientific basis for practical design and application.Keywords：Greenhouse;FEM;Load- 48
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- 6
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Published：2020-08-12 -
Analysis of the Elastohydrodynamic Behaviours of Point Contact by the Multigrid Method
Abstract：The point contact problem is mainly concerned with study the mechanical properties of motional spherical components subjected to load. Generally, it is represented by a ball and a plane. The Reynolds equation is transformed into discrete equations using multigrid method which is solved by the iteration techniques, and surface distortion is obtained by a multi integration method. The film thickness, elastic deformation and pressure profiles are investigated with reference to parameters of geometry, speed, load, Poisson's ratio and viscosity of fluid. The results show that the basic characteristic of point contact is easily revealed employing the technique. Meanwhile, the numerical scheme proved to be very effective for such contact problems.Keywords：Point contact;Elastohydrodynamic lubrication behaviour;Multigrid Multi integration- 31
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Published：2020-08-12 -
Computer Aided Analysis on Structural Performance of Greenhouse
Abstract：By means of computer aided engineering analysis, the mechanical analysis of geenhouse of different shapes were performed. The influences of height, span and space on structural performance of greenhouse were presented tentatively so as to provide the theoretical foundation for optimization design of greenhouse.Keywords：Greenhouse;Structural performance;FEM- 36
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Published：2020-08-12 -
Computer Simulation of Bone by Means of CAD/CAE
Abstract：The application of integrated CAD/CAE technology in computational biomechanics is discussed, The 3 D simulated models of human bones are constructed by means of CAD and the FEM analysis model are constructed on the basis of the 3 D model. The linear and non linear stress analysis are performed which provides the scientific data for the design of medical instrument.Keywords：Freeform modeling;FEM;Computational biomechanics- 79
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- 8
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Published：2020-08-12 -
A Kind of Effective Method of Drawing Management in CAPP System
Abstract：The OLE technology was introduced briefly. Drawing display and drawing revision and drawing printing in CAPP system was realized by using this technology. It is a kind of effective method to solve the drawing management problem in CAPP system which is based on Database.Keywords：OLE;CAPP;Database- 49
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- 6
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Published：2020-08-12 -
Fast Construction of CIOM CAPP System
Abstract：This paper gives an example of fast construction of a kind of economical and practical CAPP system through the development of CIOM-CAPP system. It realizes the connection between CAPP system based on RDBMS and CAD software by using OLE technology. It can improve the efficiency of process design and decrease data redundancy using mould and coding technology.Keywords：CAPP;OLE;Mould;Coding- 33
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Published：2020-08-12 -
Mechanism Simulation with Program UGII Assembly
Abstract：Almost all of the mechanism simulation software is for the rigid objects, and the kinematics principle is relatively simple. It's not suitable for the practical project, espacilly for the invariable shape objects. The problem can be solved synthetically and nimbly employing the functions (Assembly, Interpart equation, Macro, High Quality Photo, etc.) in program UGII. Good image quality can be gained.Keywords：Mechanism simulation;Assembly;Parameterized model- 37
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Published：2020-08-12 -
Computer Real time Simulation of Improved Image Coding of AC Prediction
Abstract：According to prediction coding system proposed by Mika Helsingius, the improved method of AC prediction in real time digital image process was suggested and applied to simulation experiment of the image compression on computer. The favorble results were gotten when CR was less than 8:1.Keywords：AC prediction;Image coding;Compression;Computer real time simulation- 43
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Published：2020-08-12 -
Analysis of Mapping Digital Coding Sub-pixel Shift
Abstract：According to Jussi Lammi′s sub pixel related shift measurement method , the novel method based on the sub pixel shifting measuring method was proposed. The method was verified to fit practical application. The sub pixel shift result from coding algorithm was estimated efficiently by new method and computed on C language program. This method was applied to JPEG algorithm and compared with Jusssi Lammi's method, the identical results had gotten.Keywords：Programming image analysis;Compression;Correlation- 39
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Published：2020-08-12 -
Programming for the Control of Animation in Multimedia Authoring
Abstract：Controlling on animation when displaying frame by frame and adjusting its velocity when playing continuously is realized in multimedia authoring. The method of designing concealed interface is proposed. It provides the references for developing and designing multimedia products.Keywords：Multimedia;Animation;Interface- 75
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Published：2020-08-12 -
Research and Development of Computer Multimedia Identification System for Fragment of Automobiles Lamp Caused in Traffic Accident
Abstract：It is described that the identification package for fragment of Headlight caused by accident automobiles has been developed, the function and feature of the lamp data base are also mentioned in this paper, the future of the package is promising to be merchantable.Keywords：LPIS;Data Base;Feature parameter;Fragment of lamp;Identification.- 49
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Published：2020-08-12
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