시스템 엔지니어링 공통 프로세스 개선 연구 : 기술 프로세스를 중심으로

이태경,이중윤,Lee, Taekyong,Lee, Joong-Yoon 한국시스템엔지니어링학회 2017 시스템엔지니어링학술지 Vol.13 No.1

Systems engineering is being applied to various fields of industry such as national defense, aerospace, transportation, railway, and information technology industries. But in Korea, systems engineering has been selectively applied to government-driven projects such as space rocket development projects and unmanned flight development projects. And systems engineering processes introduced from international systems engineering standards has been directly applied to those projects. Unfortunately, this application method is not recommended as it requires highly experienced systems engineers. From our previous paper, we have proposed that domain specific engineering standards should be developed to be used as references for development of organizational engineering guide, so that more successful engineering performances can be achieved. And in this paper we have proposed a refinement of systems engineering processes from international systems engineering standards as they are bases of domain specific engineering standards.

Systems Engineering Approach to Designing Smart Condition Monitoring Systems for Smart Manufacturing

Kee-Young Shin,Nam-Ho Shin,Sang-Woo Choi,Se-Ho Choi 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10

Condition monitoring systems conduct important roles in manufacturing process lines by monitoring condition status of machines to prevent accident faults of them. Those systems need to be improved in their functionalities by adapting more intellectual, self-reconfigurable, and self-decisional mechanisms for supporting smart manufacturing operations. Whereas, many enterprises in manufacturing industry have in trouble with well-designing these smart condition monitoring systems for fitting their own purpose in their specific domains. In this paper, we propose a systems engineering approach to designing smart condition monitoring systems. The systems engineering is powerful methodology to design complex systems in many multi-disciplinary domains, so we have tailored the systems engineering processes for designing the system architecture of our system-of-interest (i.e. smart condition monitoring systems). The deliverables of this research work can contribute to provide a technical solution for well-designing other smart manufacturing systems in several industrial domains. In the end, our research works can resolve the market domains such as high-productivity and production of high-quality products in manufacturing process lines.

이산화탄소 포집 시스템 개념설계 개발을 위한 시스템 엔지니어링 기반 접근방법

이창환,홍대근,윤수철,서석환,서활원,Lee, Chang Hwan,Hong, Dae Geun,Yoon, Su Chul,Suh, Suk-Hwna,Sur, Hwal Won 한국시스템엔지니어링학회 2013 시스템엔지니어링학술지 Vol.9 No.2

Plant industry is one of technology-intensive and most prosperous industries in Korea because of its recent prosperity and promising outlook in export. However, no Korean EPC company has yet been well prepared in lifting their capacity sufficient enough to get the upstream conceptual or basic design and engineering orders for sizable plant projects which are known as the more value-added. If systems engineering, a methodology which developed complex systems such as airplanes and has been justified its effectiveness in Defense and NASA projects, can be integrated with plant engineering which should be developed and applied based on the requirements of so many stakeholders, conditions, lifecycle concepts, and constraints of the projects, huge synergic effect is expected particularly in developing a specific upstream design, which is a conceptual or basic design. The notion of integration with each other between systems engineering and plant engineering can be really the crux of EPC's success in any plant projects. This paper suggests an approach showing a methodology how to dig out, analyze, evaluate, verify and implement the stakeholders' requirements into a plant design in conceptual phase using the theory and skills of systems engineering. ISO/IEC 15288 well known systems engineering standards is used. Carbon capture system is used for a case study, for it is an emerging technology in reducing emissions of carbon dioxide causing global warming from flue gas after combustion. Here systems engineering was proven to play a substantial role in enhancing the capability of designers in developing a conceptual design of whole plant or certain part of crucial plant systems.

시스템엔지니어링을 적용한 ISEP 개발에 관한 연구

변보석 ( Bo Suk Byun ),최요철 ( Yo Chul Choi ),박영택 ( Young T Park ) 한국품질경영학회 2013 품질경영학회지 Vol.41 No.4

Purpose: The purpose of this study is to propose an Integrated Safety Evaluation Process (ISEP) that can enhances the safety aspect of the safety-critical system. This process utilizes the advantages of the iterative Systems Engineering process combined with the safety assessment process that is commonly and well defined in many standards and/or guidelines for railway, aerospace, and other safety-critical systems. Methods: The proposed process model is based on the predefined system lifecycle, in each phase of which the appropriate safety assessment activities and the safety data are identified. The interfaces between Systems Engineering process and the safety assessment process are identified before the two processes are integrated. For the integration, the elements at lower level of Systems Engineering process are combined with the relevant elements of safety assessment process. This combined process model is represented as Enhanced Functional Flow Block Diagram (EFFBD) by using CORE® that is commercial modelling tool. Results: The proposed model is applied to the lifecycle and management process of the United States aircraft system. The US aircraft systems engineering process are composed of twelve key elements, among which the requirements management, functional analysis, and Synthesis processes are considered for examplenary application of the proposed process. To synchronize the Systems Engineering process and the safety assessment process, the Systems Engineering milestones are utilized, where the US aircraft system has thirteen milestones. Taking into account of the nine steps in the maturity level, the integrated process models are proposed in some phases of lifecycle. The flows of processes are simulated using CORE®, confirming the flows are timelined without any conflict between the Systems Engineering process and the safety assessment process. Conclusion: ISEP allows the timeline analysis for identifying activity and data flows. Also, the use of CORE®is shown to be effective in the management and change of process data, which helps for the ISEP to apply for the development of safety critical system. In this study, only the first few phases of lifecyle are considered,however, the implementation through operation phases can be revised by combining the elements of safety activities regarding those phases.

CBTC 시스템 개발을 위한 시스템엔지니어링과 안전성 분석의 통합

박중용,박영원 한국철도학회 2003 한국철도학회논문집 Vol.6 No.1

This article proposes an integrated systems engineering and safety analysis model for safety-critical systems development. A methodology in system design for safety is considered during the early phase of the development life cycle of systems engineering process. The evolution of the design automation technology has enabled engineers to perform the model-based systems engineering. A Computer-Aided Systems Engineering(CASE) tool, CORE, is utilized to integrate the systems engineering model with a system safety analysis model. The results of the functional analysis phase can drive the analysis of the system safety. An example of Communications-Based Train Control(CBTC) system for an Automated Guided Transit(AGT) system demonstrated an application of the integrated model.

공학교육 체제 개선을 위한 공과대학 이해관계자의 인식 조사 연구 - OO 대학교를 중심으로 -

박기문,이규녀,김영민 대한공업교육학회 2011 대한공업교육학회지 Vol.36 No.2

The purpose of this study is to deduce the effective improvement plans of engineering education system and to provide the base materials by analyzing satisfaction and problems in the perception survey of stakeholders related in engineering education system including Engineering Education Accreditation System. Engineering education system improvement plans from the results of study are as follows. First, government and university should provide more financial support to the college in order to improve education environment such as laboratories and equipment. Second, in order to improve links among engineering education stakeholders, student-professor, student-faculty, and colleges should operate effective mentoring program and consultation plan. Third, according to service quality evaluation, colleges need to give rewards to distinguished faculties for their outstanding work and build up job training about services in order to enhance satisfaction of students and professors, Also, business related to Engineering Education Accreditation System should be simplified and needs to increase the number of workers exclusively responsible for this work. Forth, in order to enhance comprehension of learning outcome and outcome of Engineering Education Accreditation System, it is necessary to improve Engineering education innovation center's status, to establish active systematic promotion system and to operate engineering education evaluation expert committee such as 'Engineering education system evaluation council'. Fifth, because of the stakeholder's shortage of benefits and tiredness accumulation, the issue of effectiveness in engineering education institutions has raised controversy. Thus, engineering education institutions needs to take measure necessary. Moreover, engineering education improvements should be improved by reflecting opinions from professors, faculties and students who are practically planning, operating and participating engineering education programs. 이 연구의 목적은 공학교육 이해관계자(stakeholder)인 교수, 학생, 직원/조교들을 대상으로 공학교육인증제를 포함한 공학교육 체제에 대한 만족도와 개선사항을 조사 분석하여 공학교육 발전을 위한 기초자료를 제공하고, 공학교육 체제의 실효성 있는 개선방안을 도출하는데 있다. 이러한 연구 목적에 터한 공학교육 체제의 개선 방안은 다음과 같다. 첫째, 실습실 및 장비 등 교육환경을 개선하기 위하여 수요자 요구분석을 실시하고 이를 토대로 중장기 교육환경 개선과 재정이 확보되어야 한다. 둘째, 공학교육 이해관계자간 관계 증진을 위하여 멘토링 프로그램과 미래상담설계 등의 제도가 실효성 있게 재정비 되어야 한다. 셋째, 교육 행정서비스의 만족도를 높이기 위하여 서비스의 질 평가를 통한 우수 직원/조교에 대한 보상과 직무교육 강화 등의 개선이 요구되며, 공학교육인증제와 관련한 행정 업무의 단순화와 전담인원 충원 등이 검토되어야 한다. 넷째, 공학교육인증제의 이해를 높이기 위해 공학교육혁신센터의 위상 강화와 체계적인 홍보 체제가 필요하며, 외부 인사가 포함된 ‘공학교육 체제 평가 협의회(가칭)’와 같은 공학교육 평가 전문가 위원회가 필요하다. 다섯째, 공학교육인증제는 이해관계자들의 실익 부재와 행정 소요의 피로 누적 등으로 인하여 그 실효성에 대해 문제가 제기되고 있는 바 이에 대한 하여 공학교육 관련기관 차원의 방안 연구가 시급하다.

차세대 고속전철 시스템 엔지니어링 체계 모델 개발

유일상(ll-Sang yoo),박영원(Young-Won Park) 한국철도학회 2001 철도저널 Vol.4 No.4

A high-speed rail system represents a typical example of large-scale multi-disciplinary systems, consisting of subsystems such as train, electrical hardware, electronics, control, information, communication, civil technology etc. The Systems Engineering, as a methodology for engineering and management of today's ever-growing complex system, must be applied to development of such systems. This paper presents systems engineering framework model to have to be applied to the systems engineering technology development task for the korean next-generation high-speed railway systems in progress and demonstrates data models and schema for computer-aided systems engineering software, RDD-100, for use in its development and management.

Development of Simplified DNBR Calculation Algorithm using Model-Based Systems Engineering Methodology

Awad, Ibrahim Fathy,Jung, Jae Cheon The Korean Society of Systems Engineering 2018 시스템엔지니어링학술지 Vol.14 No.2

System Complexity one of the most common cause failure of the projects, it leads to a lack of understanding about the functions of the system. Hence, the model is developed for communication and furthermore modeling help analysis, design, and understanding of the system. On the other hand, the text-based specification is useful and easy to develop but is difficult to visualize the physical composition, structure, and behaviour or data exchange of the system. Therefore, it is necessary to transform system description into a diagram which clearly depicts the behaviour of the system as well as the interaction between components. According to the International Atomic Energy Agency (IAEA) Safety Glossary, The safety system is a system important to safety, provided to ensure the safe shutdown of the reactor or the residual heat removal from the reactor core, or to limit the consequences of anticipated operational occurrences and design basis accidents. Core Protection Calculator System (CPCS) in Advanced Power Reactor 1400 (APR 1400) Nuclear Power Plant is a safety critical system. CPCS was developed using systems engineering method focusing on Departure from Nuclear Boiling Ratio (DNBR) calculation. Due to the complexity of the system, many diagrams are needed to minimize the risk of ambiguities and lack of understanding. Using Model-Based Systems Engineering (MBSE) software for modeling the DNBR algorithm were used. These diagrams then serve as the baseline of the reverse engineering process and speeding up the development process. In addition, the use of MBSE ensures that any additional information obtained from auxiliary sources can then be input into the system model, ensuring data consistency.

A Proposal of Quality Assessment for System Model

Onozuka, Yuki,Ioki, Makoto,Shirasaka, Seiko The Korean Society of Systems Engineering 2016 시스템엔지니어링학술지 Vol.12 No.2

Recently, the increased complexity of systems has made systems engineering necessary. It is very useful for system designers to understand the whole context of the concerned system based on systems engineering. A system model can be used to describe the outcome of a system design. A system model describes the system from the viewpoint of the stakeholder's needs using the mutually exclusive and collectively exhaustive principle. A system model can be used to smoothly design a large and complicated system based on the systems engineering development process. Many companies and countries are attempting to apply model-based systems engineering, and the significance of the system model quality is increasing as system models are referenced during system development. In this paper, we propose a quality assessment method for ontology which is one of system models by focusing on the system development process. First, in this process, a system developer should explicitly show the relationship between viewpoints. Then, the system developer should select dependent rather than independent viewpoints. With dependent viewpoints, each viewpoint used to describe the system has some logical relationship. The set of viewpoints makes it possible to show, not only tangible and physical system parts, but also conceptual system parts. In this paper, we develop an ontological system model of a Japanese weather observation system. By comparing some ontological system models, we verify the effectiveness of explicitly describing the relationships between viewpoints and select dependent viewpoints.

기존시스템의 개념 및 기본 설계를 위해 최소화된 아키텍처 기반 설계 프로세스 제안 및 고로 시스템 적용 사례

이중윤,최인용,Lee, Joong Yoon,Shelly, Salim,Choi, In Young 한국시스템엔지니어링학회 2018 시스템엔지니어링학술지 Vol.14 No.1

Generally speaking, because of complexity of engineering process, the systems engineering may be not easy to understand clearly and not easy to perform also. The status of systems engineering infrastructure of the some Korean industry is not matured yet, i.e., the systems engineering process, method, tool and environment is not implemented consistently within the steel making industry. These difficulties are more severe at the concept and basic design phase than the detail design phase relatively. Korean industry has lots of development project for the precedented systems and usually has matured domain knowledge for the precedented systems. Even though there is a mature domain knowledge of the precedented systems, the development project will lead to failure under the condition of engineering system is not well equipped. For the project success, it is very important to have a proper engineering execution system especially for the concept design and basic phase, which has a high abstraction and a large influence on the whole project. This paper proposes a minimized design process that can be easily applied to the concept and basic design phase of the precedented systems, instead of complex system engineering processes. This paper also proposes the application case of the minimized design process and methods for a Blast Furnace System.