• 대한안전경영과학회지
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• 제17권1호
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• pp.179-192
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• 2015

In an automated industry PLC plays a central role to control the automation system. Therefore, fault free operation of PLC controlled automation system is essential in order to maximize a firm's productivity. A prior test of control system is a practical way to check fault operations, but it is a time consuming job and can not check all possible fault operation. A formal verification of PLC program could be a best way to check all possible fault situation. Tracing the history of the study on formal verification, we found three problems, the first is that a formal representation of PLC control system is incomplete, the second is a state explosion problem and the third is that the verification result is difficult to use for the correction of control program. In this paper, we propose a transformation method to reproduce the control system correctly in formal model and efficient procedure to verify and correct the control program using verification result. To demonstrate the proposed method, we provided a suitable case study of an automation system.

• 대한전자공학회논문지SD
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• 제47권2호
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• pp.106-114
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• 2010

본 논문은 기가 스케일 System on Chip(SoC)를 위한 통합 설계 및 검증 플랫폼을 제안한다. VLSI 집적도의 발달로 그 복잡도가 증가하여 기존의 RTL 설계 방식으로는 그 생산성 차이(Production Gap)를 극복할 수 없게 되었다. 또한, 검증 차이(Verification Gap)의 증가로 검증 방법론에도 커다란 변혁이 필요하게 되었다. 본 플랫폼은 기존의 상위 수준 합성을 포함하며, 그 결과물을 이용하여 저 전력 설계의 전원 인식 검증 플랫폼과 검증 자동화를 개발하였다. 상위 수준 합성 시 사용되는 Control and Data Row Graph (CDFG)와 고 입력인 상위 수준 언어와 RTL를 기반으로 한 검증 플랫폼 자동화와 전원 인식 검증 방법론을 개발하였다. 검증 플랫폼에는 자동 검사 기능을 포함하고 있으며 Coverage Driven Verification을 채택하고 있다. 특히 전원 인식 검증을 위하여 개발된 조건 랜덤 벡터 생성 알고리듬을 사용하여 랜덤 벡터의 개수를 최소 5.75배 감소시키는 효과를 가져왔고, 전원과 전원 셀에 대한 모델링 기법을 이용하여 일반적인 로직 시뮬레이터 툴을 통해서도 전원 인식 검증을 가능하게 하였다. 이러한 통합된 설계 및 검증 플랫폼은 시스템 수준의 설계에서 검증, 합성에 이르는 전 설계 흐름을 완전 자동화 하여 상위 수준의 설계와 검증을 가능하게 하고 있다.

• 한국항행학회논문지
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• 제23권5호
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• pp.361-366
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• 2019

항공전자시스템을 개발하는 과정에서 개별 구성품의 기능 및 연동 검증을 위한 통합시험환경(SIL; system integration laboratory)을 구성한다. 이러한 SIL의 구성품 개별 검증 및 시스템 통합 시 각 탑재장비의 기능 및 연동을 모의하는 SIL 모델을 개발하여 이용한다. SIL 모델은 실 장비와 연동되기 전 연동통제문서(ICD; interface control document)에 정의된 모든 데이터에 대해 선 검증되어야하며 ICD 변경 혹은 기능 변경 발생 시에도 재 검증되어야한다. 하지만 SIL모델의 검증의 수동 수행 시 개별 SIL모델의 검증에도 상당한 시간이 소요된다. 이러한 시간상의 문제로 ICD 변경이나 일부 기능 변경 시에는 SIL 모델의 영향성을 판단하여 선택적 회귀시험이 이루어지곤 한다. 본 논문에서는 이러한 SIL 모델의 검증에 소요되는 시간을 최소화하여 회귀시험 수행 시 모든 시험항목의 검증이 가능하도록 SIL 모델 검증 자동화 방안을 설계하고 설계에 따른 SIL 모델 검증 자동화도구를 개발하여 SIL 모델 검증자동화 설계의 유용성을 검증하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.33-36
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• 2010

The attention in construction Automation is getting higher since it could be the answer to the lack of skilled labor by decrease in construction population and aging which adversely affects productivity and quality in the construction site. We are on the way to develop a construction automation system adequate for domestic circumstances in Korea; it is called RCA(Robotic-crane based Construction Automation)system. Climbing hydraulic robots system is a part of RCA system and makes Construction factory(CF) climb through the guide rail on the core wall. The safety of climbing hydraulic robots system is at issue due to the overloaded weight of CF. Preventing this issue, present study did the design verification through the structural analysis and the simulation. Mock-up test also was done to analyze the drive performance of climbing hydraulic robots system.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2009년도 추계학술대회 논문집
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• pp.231-234
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• 2009

IEC 61850 based substation automation system is operating under digital network with a number of IEDs and a HMI as relation of server and client. In case of IEDs, before implementing the system, all of the system integrators require IEC 61850 certificate from individual IED manufacture. Otherwise, there is nothing to verify IED for constructing substation automation system at the real substation. This paper shows verification strategy of IEC 61850 communication reliability such as association /release, report, dataset and four type control function.

• 한국해양공학회지
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• 제27권1호
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• pp.24-30
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• 2013

The Korea Navy has been making constant efforts to apply M&S (modeling and simulation) to naval ship development, and the generalization of M&S for ship development is a trend. M&S for ship design is used for the V&V (verification and validation) of its design and operation, including design verification and ergonomic design that considers the crew using the Naval Ship Product Model. In addition, many parts of this M&S are repeatedly accomplished regardless of the kinds of ships. This study aims to standardize M&S, which repeatedly applies similar verifications for operation scenarios. A congestion assessment simulation for the major spaces of ships was the subject of the standardization based on the leading research results of various researchers, and a simulation automation solution was suggested. An information model using XML was proposed through the simulation automation concept, and a prototype system based on it was implemented. The usability was shown through a case study that verified the operability performance of the crew messroom.

• 정보보호학회논문지
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• 제13권5호
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• pp.17-37
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• 2003

본 논문에서는 인증 및 키 분배 프로토콜에 대한 논리성 검증을 위한 ASVO 로직을 제안한다. ASVO 로직은 기존의 인증 로직 중 하나인 SVO 로직에 대해서 자동 검증을 고려하여 변형 설계한 로직이다. ASVO 로직은 구문적/의미적 구조의 안전성을 갖는 로직으로서. 비교적 간소화된 증명 단계를 갖는다. 또한 Isabelle/Isar 시스템을 이용하여 구현된 Isabelle/ASVO 시스템은 ASVO 로직을 통한 반자동 검증을 지원한다.

• 대한임베디드공학회논문지
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• 제18권4호
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• pp.141-150
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• 2023

Currently, various companies are actively participating in research and development of drone delivery services. Existing studies do not comprehensively provide integrated functions for future drone delivery services such as mission automation, customer verification, and overcoming performance limitations, which can lead to high manpower demand, reduced user service trust, and potentially overloading low-end devices. Therefore, this study proposes a drone mission automation system (DMAS) using EdgeCPS technology to provide the three aforementioned functions in an integrated manner. Real-world experiments were conducted to evaluate the proposed system, demonstrating that the DMAS components operate according to the specified roles in the delivery scenario. In addition, the system achieved user verification with a similarity of more than 90% in the process of receiving the product, and verified a faster inference speed and a lower resource share than the existing method.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1-2
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• 2008

Korea Electric Power Research Institute has carried out verification of communication conformance on IEC 61850 based IEDs related to power IT project "Development of Prototype for Advanced Substation Automation System based on the Digital Control Technology". Owing to IEC 61850 international standard and digital substation automation system, IED testing process should be changed from the conventional way to the new way described in the paper. This paper describes IED testing procedures based on substation automation system using UML.

• Journal of Information Processing Systems
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• 제20권3호
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• pp.296-306
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• 2024

Traditional ecological driving (Eco-Driving) evaluations often rely on mathematical models that predominantly offer subjective insights, which limits their application in real-world scenarios. This study develops a robust, data-driven Eco-Driving evaluation model by integrating dynamic and distributed multi-source data, including vehicle performance, road conditions, and the driving environment. The model employs a combination weighting method alongside K-means clustering to facilitate a nuanced comparative analysis of Eco-Driving behaviors across vehicles with identical energy consumption profiles. Extensive data validation confirms that the proposed model is capable of assessing Eco-Driving practices across diverse vehicles, roads, and environmental conditions, thereby ensuring more objective, comprehensive, and equitable results.