• 한국정보통신학회논문지
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• 제6권6호
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• pp.856-862
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• 2002

The object-oriented(00) distributed real-time(RT) programming movement started in1990's and is growing rapidly at this turn of the century. Distributed real-time simulation is a field in its infancy but it is bounded to receive steadily growing recognition for its importance and wide applicability. The scheme is called the distributed time-triggered simulation scheme which is conceptually simple and easy to use but widely applicable. A new generation object oriented(00) RT programming scheme is called the time-triggered message triggered object(TMO)programming scheme and it is used to make specific illustrations of the issues. The TMO structuring scheme is a general-style components structuring scheme and supports design of all types of component including hard real time objects and non real time objects within one general structure.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -3
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• pp.1843-1846
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• 2002

The object-oriented(OO) distributed real- time(RT) programming movement started in 1990’s and is growing rapidly at this turn of the century Distributed real-time simulation is a field in its infancy but it is bounded to receive steadily growing recognition for its importance and wide applicability. The scheme is called the distributed time-triggered simulation scheme which is conceptually simple and easy to use but widely applicable. A new generation object oriented(00) RT programming scheme is called the time-triggered message triggered object(TMO) programming scheme and it is used to make specific illustrations of the issues. The TMO structuring scheme is a general-style components structuring scheme and supports design of all types of component including hard real time 1 objects and non real time objects within one general structure.

• 한국통신학회논문지
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• 제27권10A호
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• pp.990-999
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• 2002

The object-oriented(OO) distributed real-time(RT) programming movement started in 1990's and is growing rapidly at this turn of the century. Distributed real-time simulation is a field in its infancy but it is bounded to receive steadily growing recognition for its importance and wide applicability. The scheme is called the distributed time-triggered simulation scheme which is conceptually simple and easy to use but widely applicable. A new generation object oriented(OO) RT programming scheme is called the time-triggered message triggered object(TMO) programming scheme and it is used to make specific illustrations of the issues. The TMO structuring scheme is a general-style components structuring scheme and supports design of all types of component including hard real time objects and non real time objects within one general structure.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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• pp.40-43
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• 1996

An off-line programming, OLP, system is widely used in automation fines. To help an on-line robot system to carry out desirable tasks planned by the off-line simulation, an approach to the real-time communication is presented. The OLP system developed consists of a software, a host computer(PC), a SCARA robot body, four servo drivers, and four independent joint controllers. This study focuses on the software where real-time communication is included. The software, can be used in teaching, trajectory planning, real-time running, and performance evaluation. The evaluation of different control algorithms is one of the merits of the software. The software can give servo commands for task running. A comparison of generated and corresponding actual trajectories provides the evaluation of task performance. The safety, of the OLP system is ensured by alarming malfuntions of the system. The OLP system developed can reduce the teaching time and increase the user's convenience.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2001년도 추계학술대회 논문집 Vol.14 No.1
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• pp.46-51
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• 2001

For Fast Real-time Recognition of Nonlinear Error Data, a new Neural Network algorithm which recognized the map in real time is proposed. The proposed neural network technique is the real time computation method through the inter-node diffusion, In the network, a node corresponds to a state in the quantized input space. Each node is composed of a processing unit and fixed weights from its neighbor nodes as well as its input terminal. The most reliable algorithm derived for real time recognition of map, is a dynamic programming based algorithm based on sequence matching techniques that would process the data as it arrives and could therefore provide continuously updated neighbor information estimates. Through several simulation experiments, real time reconstruction of the nonlinear map information is processed,

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2001년도 추계학술대회 논문집
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• pp.46-51
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• 2001

For Fast Real-time Recognition of Nonlinear Error Data, a new Neural Network algorithm which recognized the map in real time is proposed. The proposed neural network technique is the real time computation method through the inter-node diffusion. In the network, a node corresponds to a state in the quantized input space. Each node is composed of a processing unit and fixed weights from its neighbor nodes as well as its input terminal. The most reliable algorithm derived for real time recognition of map, is a dynamic programming based algorithm based on sequence matching techniques that would process the data as it arrives and could therefore provide continuously updated neighbor information estimates. Through several simulation experiments, real time reconstruction of the nonlinear map information is processed.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제8권4호
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• pp.423-429
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• 2002

실시간 프로그래밍에 있어 타임아웃 기능은 매우 중요한 기본적인 기능 중 하나이다. 그러나 내장 실시간 시스템에서 가장 많이 사용하는 C 언어에서는 타임아웃 기능을 지원하지 않는다. 그래서 C언어에서 실시간 프로그래밍 환경을 제공하기 위해 언어 자체를 확장하거나 실시간 엔진(또는 커널)을 지원하는 연구들이 있었다. 그러나 이것은 특정 실시간 커널과 컴파일러가 필요하다는 문제점을 갖고 있다. 본 논문에서는 운영체제에 최소한의 의존성을 갖고 라이브러리와 매크로 함수만으로 C 언어에서 타임아웃 기능을 제공한다. 또한 개발자가 편리하게 타임아웃 기능을 사용할 수 있도록 매크로 정의를 통해 구조화된 _within 문장을 제공한다. 이 기능은 리눅스의 단일 쓰레드 환경과 도스 환경뿐만 아니라 다중 쓰레드 환경인 POSIX 쓰레드에서도 구현하였다.

• 한국통신학회논문지
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• 제22권6호
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• pp.1365-1376
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• 1997

In this paper, we designed real time mechanism control language and proposed execution time analysis technique. It was impossible to handle real-time mechanism control programs like programmable controller, numerical controller, distributed control system and robot controller with general purpose programming languages and operating systems because they have to process electric signals generated by thousands of sensors at the same at the same time and in real time. So we made it possible to predict plausibility of time constraint constructs of tiem constraint construct of a real time application program at compilation time by adding time constraint constructs and mechanism synchronization structure to conditional statement and iteration statement of a programming language and developing execution time analysis technique.

• 정보처리학회논문지A
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• 제10A권3호
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• pp.199-206
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• 2003

객체 지향 분산 실시간 시스템은 1990년도에 시작되어 현재 빠르게 급성장하고 있는 공학의 한 분야이다. 분산 실시간 시뮬레이션은 실시간의 초기 분야로서 실시간 시뮬레이션의 중요함을 광범위하게 나타냈으며 점진적으로 시뮬레이션이 크게 사용 할 수 있음을 TMO를 통해 보인다. 분산 시간-구동 시뮬레이션 구조도 개념적으로 간단하고, 사용하기 쉬우며, 또한 광범위하게 적용 및 응용이 가능함도 연구한다. 차세대 객체 지향 실시간 시뮬레이션 프로그래밍 구조에서 시간구동과 메시지 구동 객체지향(TMO) 프로그래밍 구조를 실시간 시뮬레이션 프로그래밍의 특별한 예시로서 사용하였다. 연구에서 제시한 TMO 구조도 일반적인 형태의 컴포넌트 구조로 이루어졌기 때문에 구조 내에서 실시간 객체 또는 비실시간 객체를 포함한 모든 형태의 컴포넌트 설계 등으로 지원함을 보인다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제9권3호
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• pp.244-248
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• 2009

This paper describes a real-time EtherCAT Master library. The library is developed using Xenomai. Xenomai is a real-time development framework. It cooperates with the Linux kernel, in order to provide a pervasive, interface-agnostic, hard real-time support to user-space applications, seamlessly integrated into the GNU/Linux environment. The proposed master library implements EtherCAT protocol for master side, and supports Application Programming Interfaces(APIs) for programming of real-time application which controls EtherCAT slave.