• Journal of Astronomy and Space Sciences
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• 제30권1호
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• pp.1-10
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• 2013

An integrated orbit and attitude control algorithm for satellite formation flying was developed, and an integrated orbit and attitude software-in-the-loop (SIL) simulator was also developed to test and verify the integrated control algorithm. The integrated algorithm includes state-dependent Riccati equation (SDRE) control algorithm and PD feedback control algorithm as orbit and attitude controller respectively and configures the two algorithms with an integrating effect. The integrated SIL simulator largely comprises an orbit SIL simulator for orbit determination and control, and attitude SIL simulator for attitude determination and control. The two SIL simulators were designed considering the performance and characteristics of related hardware-in-the-loop (HIL) simulators and were combined into the integrated SIL simulator. To verify the developed integrated SIL simulator with the integrated control algorithm, an orbit simulation and integrated orbit and attitude simulation were performed for a formation reconfiguration scenario using the orbit SIL simulator and the integrated SIL simulator, respectively. Then, the two simulation results were compared and analyzed with each other. As a result, the user satellite in both simulations achieved successful formation reconfiguration, and the results of the integrated simulation were closer to those of actual satellite than the orbit simulation. The integrated orbit and attitude control algorithm verified in this study enables us to perform more realistic orbit control for satellite formation flying. In addition, the integrated orbit and attitude SIL simulator is able to provide the environment of easy test and verification not only for the existing diverse orbit or attitude control algorithms but also for integrated orbit and attitude control algorithms.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.703-706
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• 2001

This paper presents a component-based integration framework and its software component architecture for supporting the rapid integration of legacy design supporting systems in the distributed environment. Also, using standard interface, this software component architecture provides flexibility, extensibility and compatibility which ensure software components to be independent of the integration middleware and systems to be integrated.

• 대한지구과학교육학회지
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• 제16권3호
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• pp.374-384
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• 2023

이 연구는 사회적 요구에 의해 강조되고 있는 집단지성, 가치관, 소프트웨어를 적용하여 예비교사들이 통합과학교육 프로그램을 개발하는 과정에서 예비교사에게 미치는 영향을 알아보았다. 이러한 결과로 첫째, 집단지성을 활용한 통합과학교육 프로그램 개발은 예비교사의 학습동기를 향상시켰다. 특히 수행과정에서 학습동기가 향상되는 것이 나타났다. 둘째, 집단지성 기반 통합과학교육 프로그램 개발은 예비교사들의 집단지성 역량을 함양하였다. 프로그램을 개발, 시연, 피드백하는 전 과정에서 집단의 긍정적 영향이 발현되었다. 셋째, 과학 교과에 소프트웨어와 개인의 가치관은 접목할 필요가 있으나 이를 위해 전문적 지원이 필요한 것으로 나타났다.

• 한국IT서비스학회지
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• 제11권4호
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• pp.171-180
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• 2012

Since software and hardware integration has became a strategic tool for companies to innovate their products, an information system that can comprehensively manage software and hardware integrated product development is critical for the current product development. This paper proposed a product data model that can support modules of related software and hardware parts in Product Data Management(PDM) integrated with Software Configuration Management(SCM). The model allows engineers to define software and hardware product structure independently, and support the integration module that can summon related software and hardware parts to build a comprehensive module for collaboration. Through the integration module, engineers can identify and examine the effectiveness of their design alternatives to other related parts form different disciplines. The product data model was implemented as a prototype PDM system and tested with an example robotics product.

• 디지털융복합연구
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• 제5권2호
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• pp.47-57
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• 2007

In this days, information resources are very important in the organization. So, Many public institutions as well as private companies eager to IRM(information resource management). Especially, one of core elements in this IRM is sizing for information system. But, many cases of sizing is executed independently, even though hardware and software are very strongly connected, Many people say that it is not efficiency. In this paper, we have established the integrated sizing model for information system. The proposed model based on hardware sizing guidelines, announced by National Information Society Agency, and software price guidelines, announced by Korean software promotion agency.

• Nuclear Engineering and Technology
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• 제38권3호
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• pp.259-276
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• 2006

As the use of digital systems becomes more prevalent, adequate techniques for software specification and analysis have become increasingly important in nuclear power plant (NPP) safety-critical systems. Additionally, the importance of software verification and validation (V&V) based on adequate specification has received greater emphasis in view of improving software quality. For thorough V&V of safety-critical systems, V&V should be performed throughout the software lifecycle. However, systematic V&V is difficult as it involves many manual-oriented tasks. Tool support is needed in order to more conveniently perform software V&V. In response, we developed four kinds of computer aided software engineering (CASE) tools to support system specification for a formal-based analysis according to the software lifecycle. In this work, we achieved optimized integration of each tool. The toolset, NuSEE, is an integrated environment for software specification and V&V for PLC based safety-critical systems. In accordance with the software lifecycle, NuSEE consists of NuSISRT for the concept phase, NuSRS for the requirements phase, NuSDS for the design phase and NuSCM for configuration management. It is believed that after further development our integrated environment will be a unique and promising software specification and analysis toolset that will support the entire software lifecycle for the development of PLC based NPP safety-critical systems.

• 정보처리학회논문지D
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• 제9D권3호
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• pp.427-434
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• 2002

원격 분산 환경에서의 효과적인 소프트웨어 개발 관리를 위해서는 각종 정보 객체들을 체계적으로 분류하고 정보 객체들 간의 연관 관계를 구조적으로 정립하여 통합 관리하는 기능이 가장 기본이 된다고 할 수 있다. 본 논문에서는 통합 정보 객체 관리를 위해 첫째, 분산 소프트웨어 개발에 필요한 각종 정보 객체들의 구조 및 관계를 통합관리하는 틀로서 BOC(Bill Of Class)를 제안하며 BOC를 이용한 정보 객체 관리 시스템의 구조와 기능을 제시한다. 둘째, BOC 구조내의 부품을 구성하고 있는 데이터들을 표준화하여, 파트 사전을 구성하여 프로그램 작성시 표준 파트(데이터)만을 사용하게 함으로써 개발 생산성과 유지 보수 생산성을 향상시키는 방안을 제시한다. 셋째, 제시한 정보 객체 관리 구조를 활용하여 분산 환경에서의 효과적인 소프트웨어 개발을 지원하는 통합 정보 객체 관리 시스템을 설계 및 구현하고 이의 유용성을 보인다.

• Telecommunications review
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• 제24권4호
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• pp.468-480
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• 2014

오늘날 개발되는 항공전자 시스템에서는 연합 구조(Federated Architecture)를 기반으로 전자장치들이 각각 하나의 소프트웨어 모듈이나 응용 프로그램을 수행하고 있으며 이들은 네트워크를 통해 연결된다. 이러한 연합 구조는 전체 시스템을 매우 복잡하게 하며 SWaP(Size, Weight and Power) 문제를 일으킬 수 있다. 본 논문은 이러한 문제가 특히 심각한 소형 무인 항공기에서 ARINC 653이 정의하고 있는 파티셔닝 기술을 활용하여 여러 임무 소프트웨어를 통합 운영하고 SWaP 문제를 효과적으로 해결할 수 있음을 보인다. 본 논문은 특히 실제 헥사콥터와 쿼드콥터에 통합 임무 시스템을 탑재하여 시험 비행을 성공적으로 수행했음을 보인다. 본 연구를 통해서 제시되는 통합 임무 소프트웨어를 운영하기 위해서 필요한 소프트웨어 기술과 통합 방법론은 SWaP이 중요한 다양한 실시간 시스템에 응용될 수 있다.

• 전산구조공학
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• 제25권4호
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• pp.63-70
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• 2012

This article introduces ADAPT Corporation's latest software product for the integrated multistory analysis and design of concrete buildings, ADAPT Edge. Edge uniquely packages user-friendly modeling of multistory buildings, accurate gravity and lateral analysis, post-tensioning, and detailed slab and beam design, all in one software package. The benefits of Edge over traditional concrete design software are explained.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1990년도 추계학술대회 논문집 학회본부
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• pp.252-255
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• 1990

Analyzing and simulating of today's complex electrical networks require the use of computer-aided engineering tools. In recent years, the rapid advances in micro-computer hardware technology have increased the availability of power application software on the personal computer, once the domain of mainframes and minicomputers, enabling efficient and cost-effective power system analysis. An interactive simulation and analysis software for a power system is developed and presented in this paper. The software is written in PASCAL and is designed for PC use. This paper presents an integrated software package to run PC-DOS for the analysis of electric power networks. The software is menu driven and controlled by prompts. These programs are intended to help users understand the process of power system analysis and design.