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김병인(Byung In Kim),손영수(Young Soo Son),박철훈(Cheol Hoon Park),이성휘(Sung Hwi Lee),함상용(Sang Yong Ham),조상현(Sang Hyun Jo) 한국생산제조학회 2013 한국생산제조학회지 Vol.22 No.5
Satellites providea lot of information and essayroles in the areas of defense and space observations. The precise distances to the satellites are measured by emitting and retro-reflecting alaser. For suchsurveys, satellite laser ranging (SLR) systems have been developed in different forms and for different areas. The structural integrity of the tracking mount is essential for it to be able to track ahigh-speed satellite precisely, overcoming the various external and internal disturbances and operating conditions. In this study, the analysisof a tracking mountwas performed for weight, wind loads, and inertia loads in order to verify itssoundness. The resultsof the comparison between aluminum and steel were analyzed in order to select the optimal material for the fork and main housing part.In addition, the natural frequency and mode shape werepredicted. Optimal material selection and structural integrity will also be verified usingstatic analysis.
김병인(Byung In Kim),경진호(Jin Ho Kyung),도현민(Hyun Min Do),조상현(Sang Hyun Jo) 대한기계학회 2013 大韓機械學會論文集A Vol.37 No.8
병렬로봇은 구조적 특성 때문에 정밀성 및 고강성이 요구되는 분야와 고속성이 요구되는 분야에서 주로 적용되고 있다. 물류 분야에서 고속이송의 중요성은 날이 갈수록 증가하고 있으며, 본 연구에서도 동일한 목적으로 고속 이송에 적용될 병렬로봇이 개발되었다. 개발된 로봇은 최대 3kg의 부하를 이송할 수 있으며 0.1kg의 부하조건에서의 최대 운전 조건은 싸이클 타임 0.3sec로 최대 속도 약 4.5m/sec로 운전할 수 있으며(Pick & Place 작업, Adept cycle) 이때 최대 가속도는 약 13G에 달한다. 본 논문에서는 개발된 고속 병렬로봇의 설계 및 해석에 관한 연구결과와 개발된 로봇의 성능에 관해 소개하고자 한다. Parallel robots used in industry require high stiffness or high speed because of their structural characteristics. Nowadays, the importance of rapid transportation has increased in the distribution industry. In this light, an industrial parallel robot has been developed for high-speed transfer. The developed parallel robot can handle a maximum payload of 3 kg. For a payload of 0.1 kg, the trajectory cycle time is 0.3 s (come and go), and the maximum velocity is 4.5 m/s (pick amp, place work, adept cycle). In this motion, its maximum acceleration is very high and reaches approximately 13g. In this paper, the design, analysis, and performance test results of the developed parallel robot system are introduced.
김휘수(Hwi Su Kim),박동일(Dong Il Park),박찬훈(Chan Hun Park),김병인(Byung In Kim),도현민(Hyun Min Do),최태용(Tae Yong Choi),김두형(Doo Hyung Kim),경진호(Jin Ho Kyung) 한국생산제조학회 2016 한국생산제조학회지 Vol.25 No.6
General industrial robots are difficult to use for precision assembly because they are operated based on position control. Their position accuracy is also usually higher than the assembly clearance (several tens of mm). In previous researches, force control was suggested as a robotic assembly solution. However, this method is difficult to apply in reality because of speed and cost problems. The RCC provides high speed, but applications are limited because the compliance is fixed, and it cannot detect an assembly condition during a task. A variable passive compliance device (VPCD) was developed herein. The VPCD can detect the assembly condition during tasks. This device can provide proper compliance for successful assembly tasks. The pneumatic system and the Stewart platform with an LVDT sensor were applied for measuring the displacement and variable compliance, respectively. The concept design and analysis were conducted to prove the effectiveness of the developed VPCD.
미세 패턴 가공을 위한 유도가열 및 수냉식 하이브리드 롤에 대한 기초 연구
조상현(Sang-Hyun Jo),김병인(Byung-In Kim),손영수(Young-soo Son),윤동원(Dongwon Yun) 한국생산제조학회 2013 한국생산제조학회지 Vol.22 No.5
Roll-to-roll (R2R) hot embossing systems have been developed and are widely used in various industrial domains. These systems press and heat flexible films between a press roll and a back-up roll, as said films pass through the two rolls. In previous studies, a heating roll was used for heating. However, in this study, a hybrid roll for R2R hot embossing is conceptualized and developed. This R2R system can be used for generating fine patterns on large and continuous films. The hybrid roll of our system can cool and heat the films simultaneously, thus affording greater flexibility in process design. Thermal and structural analyses were performed for developing the hybrid roll. In addition, a hybrid roll was designed based on analytical results. Experiments were conducted for measuring the performance of the developed hybrid roll.
계층적 참조 온톨로지 기반의 제품정보 간 상호운용성 확보
서원철(Wonchul Seo),이순재(Sunjae Lee),김광수(Kwangsoo Kim),김병인(Byung-In Kim),이재열(Jae Yeol Lee) 한국전자거래학회 2006 한국전자거래학회지 Vol.11 No.3
오늘날의 제품개발환경은 다양한 역량을 가진 참여자들의 가상조직 구성을 통한 협업을 요구하고 있으며, 참여자들 사이의 협업은 제품 개발 관련 정보들의 교환을 바탕으로 이루어진다. 제품정보의 효율적인 교환을 지원하기 위하여 본 논문에서는 제품정보에 대한 시맨틱스를 기반으로 가상조직 내 모든 애플리케이션 도메인들이 서로의 제품정보모델을 이해하고 이를 바탕으로 제품정보모델 사이의 상호운용성을 확보할 수 있도록 참조 온톨로지인 Reference Domain Ontology(RDO)를 제안하고 이를 이용한 방법론을 제시한다. RDO는 가상조직에 참여하는 모든 애플리케이션 도메인의 제품정보모델과 메타모델에 대한 시맨틱스를 포함함으로써 협업에서 발생 가능한 제품정보모델 교환의 지연요소를 제거한다. RDO는 가상조직이 형성될 때 생성되며 가상조직의 변화에 능동적으로 대응하고 가상조직이 소멸되면 함께 사라지는 등 민첩하고 일시적인 특성을 지난다. 이를 위하여 RDO는 상위 온톨로지를 이용한 top-down과 가상 조직 내 애플리케이션 도메인 온톨로지의 병합을 기반으로 하는 bottom-up의 복합적 접근법으로 구축된다. In order to cope with the rapidly changing product development environment, individual manufacturing enterprises ara forced to collaborate with each other through establishing a virtual organization. In collaboration, designated organizations work together for mutual gain based on product data interoperability. However, product data interoperability is not fully facilitated due to semantic inconsistency among product data models of individual enterprises. In order to overcome the semantic inconsistency problem, this paper proposes a reference ontology, Reference Domain Ontology(RDO), and a methodology for product data interoperability with semantic consistency using RDO. RDO describes semantics of product data model and metamodel for all application domains in a virtual organization. Using RDO, application domains in a virtual organization can easily understand the product data models of others. RDO is agile and temporal such that it is created with the formation of a virtual organization, copes with changes of the organization, and disappears with the vanishment of the organization. RDO is built by a hybrid approach of top-down using a upper ontology and bottom-up based on the merging of ontologies of application domains in a virtual organization. With this methodology, every domain in a virtual organization can achieve product data model interoperability without model transformation.
박준혁(Junhyuk Park),김병인(Byung-In Kim),김성배(Seongbae Kim),Surya Sahoo 대한산업공학회 2010 산업공학 Vol.23 No.2
In this paper, we present the study of a real passenger transportation system. Passenger transportation problem aims to transport passengers from bus stops to their destinations by a fleet of vehicles while satisfying various constraints such as vehicle capacity, maximum allowable riding time in a bus, and time windows at destinations. Our problem also has special issues such as mixed loading, consideration of afternoon problem together with morning problem, and transferring passengers between vehicles. Our solution approach consists of three serial procedures: bus route generation, bus scheduling, and post optimization. Efficient heuristic algorithms were developed and implemented for the procedures. The proposed solution approach has been successfully applied to several real world problem instances and could reduce about 10% to 15% of buses.