The environment and requirements of modern war fields have been affected and thus changed by a variety of issues. To this end, the development of safety-critical weapon systems frequently need to meet those changes even in the operational phase. The necessity of the changes may be due to the preparation for mass-production or the request originated from the user military forces. To meet such a need can be even tougher in the development of safety-critical weapon systems since the integration of the requirements for both systems design and systems safety would make it troublesome. To handel the matter in this paper, utilization of architecture DB is proposed. Specifically, the situation in demand has first been analyzed and then a problem-solving process to accommodate the design changes has been constructed. In doing so, the concept of the aforementioned integration is particularly focused on the functional architecture, which could be a core concept of our approach to solving the problem. The result of a case study demonstrating the method studied using a computer-aided systems engineering tool is also presented.

최근 산업기술의 비약적인 발전으로 인해 오늘날 우리가 개발하거나 사용하는 시스템은 기술적 완성도 측면에서 수준이 매우 높아지고 있다. 한편 고속열차, 첨단 신무기체계 등 대형복합 시스템의 경우, 새로운 시스템을 개발하기 위해서는 기존의 단일화된 개발 방법으로는 개발과정 및 개발 후에 많은 문제점이 잠재적으로 존재한다. 따라서, 기존의 시스템 개발방법인 순공학적인 방법뿐만 아니라 역공학, 동시공학 등을 고려한 통합 프로세스의 고려를 통한 접근이 필요한 시점에 와있다. 이러한 통합적인 접근법을 수행하기 위해서는 체계적인 관리가 필수적이다. 따라서 무수히 많은 설계 산출물이 파생되는 오늘날 산출 DB의 체계적 관리 및 접근을 통한 설계의 중요성이 강조되고 있다. 본 연구를 기반으로 향후 추가 연구를 수행한다면, 국내 대형복합시스템의 설계단계에서의 안전성을 동시 고려한 시스템 설계 신뢰성 확보를 위해 도움이 될 것으로 기대 된다.

Web-based DB design standards of the Reservoir Failure Forecasting System are proposed in order to actively respond to the user’s work changes, various sensors, and business logic, and increase the system usability by reducing logic changes and client maintenance through minimal interface changes.

Web-based DB design standards of the Reservoir Failure Forecasting System are proposed in order to actively respond to the user’s work changes, various sensors, and business logic, and increase the system usability by reducing logic changes and client maintenance through minimal interface changes.

Abroad-band design method of a lumped-element 3 dB quadrature hybrid without magnetic coupling is proposed and discussed, where techniques of cascading fundamental hybrids via second-order delay equializers and adding matching sections are adopted. It is shown that the designed broad-band lumped-element 3 dB quadrature hybrid can be easily constructed and its bandwidth reaches up to 54%. Furthermore, the experiments have been carried out, the results of which agree with the theoretical ones, and hence, the validity of the broad-band design method proposed here was confirmed.