• 시스템엔지니어링학술지
• /
• 제18권2호
• /
• pp.50-57
• /
• 2022

Along with the development of the 4^th Industrial Revolution technology, artificial intelligence technology is also being used in the field of systems engineering. This study analyzed the development status of artificial intelligence technology in the areas of systems engineering core processes such as stakeholder needs and requirements definition, system requirement analysis, and system architecture definition, and presented future technology development directions. In the definition of stakeholder needs and requirements, technology development is underway to compensate for the shortcomings of the existing requirement extraction methods. In the field of system requirement analysis, technology for automatically checking errors in individual requirements and technology for analyzing categories of requirements are being developed. In the field of system architecture definition, a technology for automatically generating architectures for each system sector based on requirements is being developed. In this study, these contents were summarized and future development directions were presented.

• 기술경영경제학회:학술대회논문집
• /
• 기술경영경제학회 1997년도 제12회 동계학술발표회 논문집
• /
• pp.177-196
• /
• 1997

The engineering industry plays an important role for national competitive, since it has an high impact on other industries. With its importance, the engineering industry development largely depends on its technical manpower ather than capital factor. This study aims at estimating the additional requirement on technical manpower based on the forecasted market size which represents the structure change corresponding to economic growth in related industry. Research scope includes the twelve of fifteen field except three with insufficient historical data and technical manpower above bachelor degree. Specialty, we forecast market size with determinants resulted from historical data analysis on each field. The demand on technical manpower is derived from the forecasted market. We also estimate an additional requirement with the supply analysis. The research results show different patterns over time period. The relative ratio on chemical and construction to total market will steadily grow over short term, while applied, environment, electronic and information will rapidly grow This pattern will be stabilized over mid or long term. The additional requirement on technical manpower represents the similar pattern to market growth. The research result implies manpower policy for having high inflow of technical engineer from educational institute and the related industries through the image improvement.

• 한국인터넷방송통신학회논문지
• /
• 제14권1호
• /
• pp.37-49
• /
• 2014

본 논문은 지금까지 제안된 요구사항 공학과정을 체계적으로 분석하고 최적의 과정을 제안하였다. 세부적으로는 요구사항 추적관리와 기원을 살펴보고, 요구사항 명세서를 도출하는 다양한 출발점 (고객이 제시한 요구사항 명세서로부터, 요구사항 도출로부터, 문제분석으로부터, 비즈니스 모델링부터)을 고찰하였다. 또한, 이해 당사자 욕구 도출, 문제 분석, 비즈니스 모델링의 수행 우선순위에 대한 다양한 방법을 고찰하였다. 이들 결과로부터 "전산화 목표 파악, 비즈니스 프로세스 파악, 비즈니스 모델링, 문제분석, 이해당사자 욕구 도출, 시스템 특징 도출, 요구사항 도출, 요구사항 명세와 검증" 과정을 수행하는 것이 가장 체계적으로 요구사항 명세서를 도출하는 과정임을 제안하였다. 이 방법을 적용하면 개발단계에서 관리하면 개발단계에서의 요구사항 변경을 최소화 시키고 프로젝트 성공률을 향상시킬 수 있으며, 고객의 만족도도 향상시킬 수 있을 것이다.

• 전기학회논문지
• /
• 제65권7호
• /
• pp.1161-1168
• /
• 2016

Battery energy storage system(BESS) attract the attention of the power system operators with its fast response to a disturbance in spite of its limited energy capacity. This paper proposes the operating method of BESS for following the Automatic Generation Control(AGC) frequency control which is centrally distributed by a system operator. As BESS needs to just meet the control requirement from the system operator, it should be able to properly manage the state of charge(SOC) of BESS to be available to control signal. For doing these, the proposed method distributes the control requirement to available batteries in proportion to its SOC. In addition, unavailable batteries are controlled to recover the SOC to an appropriate range, and the recovering power is supplied by available batteries meeting the control requirement. Moreover, the proposed method manages the efficiency of power conversion system (PCS) by limiting the number of PCS to be assigned for the low control requirement. Finally, the case studies are carried out to verify the effectiveness of proposed strategy.

• 반도체디스플레이기술학회지
• /
• 제21권2호
• /
• pp.90-94
• /
• 2022

In order to minimize the picking time when the products are released from the warehouse, they should be located close to the exit when the products are released. Currently, the warehouse determines the loading location based on the order of the requirement of products, that is, the frequency of arrival and departure. Items with lower requirement ranks are loaded away from the exit, and items with higher requirement ranks are loaded closer from the exit. This is a case in which the delivery time is faster than the products located near the exit, even if the products are loaded far from the exit due to the low requirement ranking. In this case, there is a problem in that the transit time increases when the product is released. In order to solve the problem, we use the idle time of the stocker in the warehouse to rearrange the products according to the order of delivery time. Temporal difference learning method using Q_learning control, which is one of reinforcement learning types, was used when relocating items. The results of rearranging the products using the reinforcement learning method were compared and analyzed with the results of the existing method.

• 시스템엔지니어링학술지
• /
• 제6권2호
• /
• pp.29-35
• /
• 2010

In general, an Architecture of a system is embodied as applied results of a requirement analysis of a system in early development phase. These efforts play a important role in analyzing and understanding a system considering operational, functional, and physical view and deriving a correct solution before developing the system. In this paper, the architecture of the Tube Transportation System(TTS) known as the new transportation system in Railway Domain is depicted by performance parameter has already developed. The existing performance parameters are shown by a variety of types with many meanings rather than types of general requirements refined. As these early performance parameters have analyzed and complemented to a level of requirement by requirement managers and other domain specialists, the architecture of the Tube Transportation System was developed systematically and then system requirements will be drawn up definitely. The presented architecture will provide a framework of developing a TTS and also offer an information in performance analysis of TTS.

• 한국철도학회논문집
• /
• 제9권3호
• /
• pp.330-334
• /
• 2006

To maintain design-knowledge database and manage configuration for requirement of performance tests and safety standards of High Speed Railway(HSR), It is established that management system of performance tests and safety standards and then constructed that design-knowledge database and documented a performance test and safety specifications for supporting performance test and safety system using Model-Based Systems Engineering(MBSE) tool.

• International Journal of Aeronautical and Space Sciences
• /
• 제6권2호
• /
• pp.97-109
• /
• 2005

In this paper, the critical requirement for obstacle awareness and avoidance is assessed with the compliance of the equivalent level of safety regulation, and then the collision avoidance sensor system is presented with the key design parameters for the requirement of the smart unmanned aerial vehicle in low-altitude flight. Based on the assessment of various sensors, small-sized radar sensor is selected for the suitable candidate due to the real-time range and range-rate acquisition capability of the stationary and moving aircraft even under all-weather environments. Through the performance analysis for the system requirement, the conceptual design result of radar sensor model is proposed with the range detection probability and collision avoidance mode is established based on the time-to-collision, which is analyzed by collision scenario.

• 시스템엔지니어링워크숍
• /
• 통권4호
• /
• pp.34-48
• /
• 2004

• 시스템엔지니어링워크숍
• /
• 통권6호
• /
• pp.107-119
• /
• 2005