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함정 기반 다중 무장 호환 운용을 위한 발사제어기 아키텍처
신진범,조길석,유명환,김태현,Shin, JinBeom,Cho, KilSeok,Yoo, MyongHwan,Kim, TaeHyon 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.2
In this paper, we have proposed hardware and software architecture of a launch control unit for the compatibility between air defense weapon systems loaded on shipboard. Until now, there is no compatibility between weapon systems loaded in battleships of korean navy. In the case of HaeGung system recently completed the test and evaluations, although it will be deployed on several kinds of shipboards, it has no compatibility and flexibility with other air defense weapon systems. Recently it reports that a long range air defense weapon system will be carried on future korean destroyer KDDX. Because the HaeGung and a long range air defense system will be operated together in KDDX, it is necessary to provide the compatibility between two weapon systems. So we have proposed architecture to provide the compatibility of the launch control unit that controls the launching system and the missile interface unit, and the missile in each weapon systems.
김태현,배정일,신진범,조길석,Kim, Taehyon,Bae, Jungil,Shin, Jinbeom,Cho, Kilseok 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.6
Fault tolerance is a crucial design for a mission-critical computer such as engagement control computer that has to maintain its operation for long mission time. In recent years, software fault-tolerant design is becoming important in terms of cost-effectiveness and high-efficiency. In this paper, we propose MPCMCC which is a model-based software component to implement fault tolerance in mission-critical computers. MPCMCC is a fault tolerance design that synchronizes shared data between two computers by using the one-way message-passing scheme which is easy to use and more stable than the shared memory scheme. In addition, MPCMCC can be easily reused for future work by employing the model based development methodology. We verified the functions of the software component and analyzed its performance in the simulation environment by using two mission-critical computers. The results show that MPCMCC is a suitable software component for fault tolerance in mission-critical computers.
임베디드 시스템 인터페이스용 미들웨어 설계 및 성능분석
김명선(Myoungsun Kim),이수원(Su Won Lee),이철훈(Cheol-Hoon Lee),최훈(Hoon Choi),조길석(Kilseok Cho) 한국정보과학회 2008 정보과학회 컴퓨팅의 실제 논문지 Vol.14 No.1
임베디드 응용프로그램 개발의 적시성(time-to-market)을 위해, 기존 임베디드 응용프로그램의 재사용 기법과 각기 다른 플랫폼에 인터페이스 시켜주는 인터페이스용 미들웨어에 대한 연구가 활발히 진행되고 있다. 인터페이스용 미들웨어 연구로서 기존의 MT 프로젝트, Xenomai, Legacy2linux 기술들은 미들웨어에서 제공되는 API가 특정 운영체제에 종속되거나 API의 확장성을 제공하지 못한다는 한계점이 있다. 본 논문에서 제안하는 임베디드 시스템 인터페이스용 미들웨어는 운영체제에 대한 종속성을 제거하여 다양한 운영체제를 지원한다. 또한, 미들웨어의 확장 및 동적 재구성이 가능한 컴포넌트 기반 구조로 설계되어, 자원 제한적인 임베디드 시스템에서 응용프로그램을 효율적으로 실행시킬 수 있다. 본 논문에서 제안하는 미들웨어의 추가에 따른 응용프로그램의 실행 지연은 미들웨어 API의 실행 시 최소 0.3 μsec에서 최대 5μsec 정도이며, 이는 응용프로그램의 실행 성능에 큰 영향을 주지 않을 것으로 판단된다. As various types of embedded devices are widely used, a technology that supports reuse of applications on multiple platforms is needed in order for time-to-market development of the applications. The interface middleware is one of such technology and it hides platform dependency from application programmers. Existing interface middleware such as the MT project, Xenomai and Legacy2linux have limitation in that the APIs provided by each of these middleware are fixed to a specific operating system, and the middleware does not provide dynamic expansion of its API set. In this paper, we propose a middleware which hides operating system dependencies and enables porting of applications on various operating systems. In addition, the middleware has scalable structure so that it is suitable for resource-limited embedded systems. The overhead of the middleware, i.e., the time delay occurred by the middleware is between 0.3usec and 5usec in most cases. We believe that the amount of overhead is reasonable and does not hurt the performance of applications.