• Title/Summary/Keyword: Integrated Design System

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Design of Navigation Environment Generation Module of M&S Software for Integrated Navigation System Performance Evaluation

  • Kim, Heyone;Lee, Junhak;Oh, Sang Heon;So, Hyoungmin;Hwang, Dong-Hwan
    • Journal of Positioning, Navigation, and Timing
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    • v.7 no.2
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    • pp.73-90
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    • 2018
  • Various navigation systems are integrated with the Global Navigation Satellite System (GNSS) to improve navigation performance so that continuous navigation information can be obtained even when navigation performance is degraded or navigation is not available due to the outage of GNSS. Time and cost can be reduced by evaluating performance of the integrated navigation system through Modeling and Simulation (M&S) software prior to the deployment of the integrated navigation system. The measurements of the navigation system should be generated to evaluate performance through of the navigation system M&S software. This paper proposes a method of designing a navigation environment generation module in M&S software of the integrated navigation system. To show applicability of the proposed method to M&S software design of the integrated navigation system, functions are verified through MATLAB. And then visual C++ based M&S software for the integrated navigation system is implemented to check the operation of the navigation environment generation module. The reference trajectory is generated and true measurements of Global Positioning System (GPS), Korea Positioning System (KPS), and enhanced Long range navigation (eLoran) are generated from the reference trajectory. The navigation results obtained from the true measurements are compared with the reference trajectories. The results show that the measurements generated using the design generation module by the proposed method are valid and the navigation environment generation module can be applied to M&S software of the integrated navigation system.

Development of Dual Stage Profile Shifted Gear System with Bearing-Integrated Structure for High Reduction Ratio (고감속비를 가지는 베어링일체형 구조의 2단 전위 감속기의 개발)

  • Hwang, Il-Kyu;Choi, Jung-Soo;Jung, Moon-Soo
    • Korean Journal of Computational Design and Engineering
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    • v.17 no.5
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    • pp.312-323
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    • 2012
  • Planetary gearing is a gear system consisting of one or more planet gears, revolving about a sun gear. While the planetary gear system has many advantages- for example, high power density, large reduction in a small volume, multiple kinematic combinations, pure torsional reactions, and coaxial shafting, it has not been widely used because of its high bearing loads, inaccessibility, and design complexity. It is also necessary to shift several pairs of gear profiles at a same time. Therefore, designing profile shifted planetary gear system is a difficult and know-how dependent job. This study provides a practical solution to design a profile shifted gear system by the procedural design scheme, and proposes a bearing integrated structure of the dual stage profile shifted gear system with a robust output end. A dual stage profile shifted gear system with the bearing integrated structure is manufactured by the proposed design scheme in this study. This gear system is verified that it is good enough to commercialize, because it has high performance with high gear ratio and robust output end against axial and radial directional runouts in a small space.

Design Data Exchange in an Integrated Architectural Design Environment: A Product Model Approach Using STEP Technology (통합 건축 설계 환경에서의 설계 정보의 교환에 관한 연구: STEP을 이용한 Product Modeling 접근 방법)

  • 김인한;김유진
    • Korean Journal of Computational Design and Engineering
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    • v.2 no.1
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    • pp.44-52
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    • 1997
  • A design process is difficult to describe comprehensively because a design problem has a multi-disciplinary nature and the design itself evolves as solutions are attempted by the designer. The process of design has been investigated in this paper with the purpose of characterizing the role that a system of this kind may have. In defining the system, an approach has been used that privileges the relationships with the existing CAD tools based on data exchange standards in course of definition today. Integrated design environment normally consists of a centralized data model a data management system and a set of CAD tools. In this study, all further investigations are directed towards the data management system, as one of the main components of the proposed environment. Moreover, product modeling, as a prerequisite for the data management core, is taken into special consideration.

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Development of Integrated Design and Optimization Software for the High Temperature Furnace Design (초고온 진공로 통합설계 최적화 소프트웨어 개발)

  • Jin, YuXuan;Lee, Jaewoo;Byun, Yunghwan
    • Journal of the Korean Society of Systems Engineering
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    • v.1 no.1
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    • pp.14-19
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    • 2005
  • High temperature vacuum furnaces or high standard electric furnaces demand high technology level and high production cost. Therefore, an iterative design process and the optimization approach under integrated computing environment are required to reduce the development risk. Moreover, it also required to develop an integrated design software that can manage the centralized database system between factory and design department, and the automated furnace design and analysis. The developed software is dedicated to the development of the vacuum (electric) furnaces. Based on the distribute middleware system, the GUI module, the CAD module, the thermal analysis module and the optimization module are integrated. For the DBMS, Microsoft Access is employed, the GUI is developed using Visual Basic language, and AutoCAD is utilized for the configuration design. By investigating the analysis code interface, the analysis and optimization process, and the data communication method, the overall system architecture, the method to integrate the optimizer and ana lysis codes, and the method to manage the data flow are proposed and verified through the optimal furnace design.

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Development of Missile Design Computer Framework for the Multidisciplinary Optimization (유도무기 통합최적화설계를 위한 전산프레임워크 개발연구)

  • Kim Woo-Hyun;Lee Seung-Jin;Lee Jae-Woo;Byun Yung-Hwan
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2006.04a
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    • pp.307-314
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    • 2006
  • Missile system. which requires high speed/high maneuverability is getting more important as a defensive weapon system. Integrated design environment which includes all related resources during the missile development process, is a very useful development tool, Therefor the design framework can perform the operation analysis and utilize design information for the efficient missile design. For this purpose, various analysis computer codes under heterogeneous platforms and operating systems, the database, the optimization module, and Ideas a commercial CAD are integrated using distributed. middleware. and the complicated GUI design has been made for the specific missile system design. Under the various constraint, maximize missile range and loadfactor with missile design computer framework.

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Case of Integrated tolerance design process by Engineering tolerance design and 6 Sigma Tolerance Design - Spindle Motor For Optical Disc Drive - (공학공차설계와 6시그마 공차설계를 통합한 공차설계 적용 사례 - 광학 디스크 드라이브 스핀들 모터 -)

  • Kim, Yongtae;Ree, Sangbok
    • Journal of Korean Society for Quality Management
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    • v.42 no.4
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    • pp.563-578
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    • 2014
  • Purpose: The purpose of this paper is integrated tolerance design process by advantages of engineering design and 6 sigma statistical tolerances design. Methods: Integrated tolerance design process can determine the goals by using engineer's experience and clarify tolerance by 6 Sigma statistical methods. Integrated design process can be applied by using non-linear simulations. Results: We applied integrated design process to the optical disc drive spindle motor and get good result. Conclusion: If this method is applied test method in the early stages of development, then Design can be reduced development time and cost.

A Design of Integrated Manufacturing System for Compound Semiconductor Fabrication (화합물 반도체 공장의 통합생산시스템 설계에 관한 연구)

  • 이승우;박지훈;이화기
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.26 no.3
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    • pp.67-73
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    • 2003
  • Manufacturing technologies of compound semiconductor are similar to the process of memory device, but management technology of manufacturing process for compound semiconductor is not enough developed. Semiconductor manufacturing environment also has been emerged as mass customization and open foundry service so integrated manufacturing system is needed. In this study we design the integrated manufacturing system for compound semiconductor fabrication t hat has monitoring of process, reduction of lead-time, obedience of due-dates and so on. This study presents integrated manufacturing system having database system that based on web and data acquisition system. And we will implement them in the actual compound semiconductor fabrication.

Introduction of distributed system for a integrated structual design systems (통합 구조설계 시스템 구축에서의 분산시스템 도입)

  • 강인호;천진호;신동철;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.10a
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    • pp.343-350
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    • 1999
  • This study introduce how distributed object technology can be applied effectively to use in a integrated structural design systems environment with the rapid increasement in the use of network technology. The architecture and management models of the developed systems are described by the CORBA(Com mon Object Request Broke Architecture) distribution standard and objects in Java language. The proposed system can be used for communicating with data between remote designers, regardless of the H/W or S/W platforms they use. Introduction of distributed objects methodologies to a Integrated structural design systems provide advanced levels of integration in structural design environment.

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Design of Dynamic Characteristics Adjustable Integrated Air Spring-Damper Mechanism for Dual Shock Generation System (동특성 가변형 에어스프링-댐퍼 일체 구조의 이중 충격 발생장치 설계)

  • Yeo, Sung Min;Shul, Chang Won;Kang, Min Sig
    • Journal of the Korea Institute of Military Science and Technology
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    • v.21 no.3
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    • pp.331-341
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    • 2018
  • This study proposes an integrated serial spring-damper mechanism as a dual pulse generation system. Compared to the traditional dual pulse generation system, which used multiple springs and a damper to generate a dual pulse critical for impact testing of naval equipments, currently used separated serial spring-damper mechanism is comprised of two components: an air spring, and a damper. The proposed mechanism combines the two components into one integrated system with a unique design that lets simply changing the volume and the pressure of the air tank, and the length of the annular pipe adjust the stiffness and damping constants for testing, eliminating the need to have multiple sets of air springs and dampers. Simulations using MatLab and Simulink were conducted to verify the feasibility of this design. The results show the potential of an integrated serial spring-damper mechanism as a more convenient and flexible mechanism for dual pulse generation system.

The Development of a Shop Floor-Centered Information System for the Integration of Design and Manufacturing Data (생산 현장 중심의 설계/생산 통합 정보 시스템 개발)

  • Han K. H.;Park C. W.;Oak J. S.;Kim K. S.
    • Korean Journal of Computational Design and Engineering
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    • v.10 no.4
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    • pp.237-243
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    • 2005
  • To increase the productivity and efficiency of an enterprise, all relevant product information should be provided to shop floor workers timely and in a unified form because shop floor workers are final consumers of most accumulated information generated from various departments of an enterprise. But, most existing enterprise information systems have an emphasis upon providing design/manufacturing information to office workers. Proposed in this study is the development of integrated design/manufacturing information system focused on providing cohesive information required to shop floor activities. For developing integrated information system, the functional requirements at the shop floor are identified and analyzed. Based on the extracted functional requirements, object-oriented system design and implementation is conducted. By using this system, shop floor workers can use all relevant information required to their daily operation in a integrated and unified form.