디스패칭 룰 기반의 시뮬레이션 모델을 활용한 S-PMS 설계

이재용(Jae-yong Lee),김상태(Sang-tae Kim),박선영(Seon-young Park),신문수(Moonsoo Shin1),조용주(Yongju Cho) 한국산업경영시스템학회 2015 한국산업경영시스템학회 학술대회 Vol.2015 No.추계

The up-to-date small and medium-sized enterprises (SMEs) in Korea have tried to respond flexibly and rapidly to dynamic business environment and to establish efficient production management system based on information technologies. However, most of SMEs have faced with low applicability of the production management system resulting from high costs of introduction and maintenance. In this paper, a production planning and control system, that is S-PMS (production management system for SMEs), is proposed to solve the problem of low applicability and limited human resources. S-PMS enables production managers to efficiently collect and manage master data with the actual target production systems and explores the bottleneck process by means of simulation techniques to improve productivity. Furthermore, it implements rescheduling mechanism in terms of a variety of process routes. In essence, intuitive dispatching rules and integrated data management of S-PMS improve field applicability of production management system. Consequently, S-PMS is expected to be used as an efficient production management system of SMEs in Korea.

A self-organizing model for distributed production resources in smart factory

Moonsoo Shin(신문수) 대한산업공학회 2021 대한산업공학회 추계학술대회논문집 Vol.2021 No.11

관계주도형 프랙탈 조직에서의 고용계약 기반 생산자원 관리모형

신문수(Moonsoo Shin) 대한산업공학회 2013 대한산업공학회지 Vol.39 No.4

국내 OEM/ODM 화장품 제조기업의 생산계획 및 효율화를 위한 분산형 MRP시스템 개발

장동민(Dongmin Jang),신문수(Moonsoo Shin) 한국산업경영시스템학회 2020 한국산업경영시스템학회지 Vol.43 No.4

Up to date cosmetic OEM/ODM (original equipment manufacturing/original development manufacturing) industry receives attention as a future growth engine due to steady growth. However, because of limited research and development capability, many companies have employed commercial management platforms specialized for large-sized companies; thus, overall system effectiveness and efficiency is low. Especially, MRP (material requirement planning) system introduced originally in 1970s is employed to calculate the requirement of the parts. However, dynamic nature of production lead time usually results in incorrect requirements. In addition, its algorithm does not consider the capability of the production resources. Also, because the commercial MRP system calculates all subcomponent for fixed period, the more goods have subcomponent, the slower calculation is. Therefore, conventional MRP system cannot respond complicated situation in time. In this study, we will suggest a new method that can respond to complicated situations resulting from short lead time and urgent production order in Korean cosmetic market. In particular, a distributed MRP system is proposed, that consists of multi-functional and operational modules, based on the characteristic of the BOM (bill of material). The distributed MRP system divides components (i.e. products and parts) into several fields and decrease the problem size; thus, we can respond to dynamically changed data any time. Through this solution, we can order components quickly, adjust schedules and planned quantity, and manage stocks reasonably. In addition, a prototype of the distributed MRP system is presented in this paper, in which ERP (enterprise resource planning) sever data is associated with an excel spreadsheet via MSsql. System user interface is implemented by a VBA (visual basic for applications) tool. According to a case study, response rate for delivery and planning achievement rate were enhanced about 20%, and inventory turnover was also decreased. Consequently, the proposed system improves overall profit.

Research Trends of Scheduling Techniques for Domestic Major Industries

Jae-yong Lee(이재용),Moonsoo Shin(신문수) 한국산업경영시스템학회 2018 한국산업경영시스템학회지 Vol.41 No.1

The up-to-date business environment for Korean manufacturers is very complex and rapidly changing. Especially, the companies have faced with various changes derived from small quantity batch production, diversification of customer demands, and short life cycles of products. Consequently, the Korean manufacturing companies are in need of more efficient production planning and scheduling techniques. In this paper, the research trend of scheduling techniques is investigated to provide relevant information to researchers in this field. Furthermore, some implications for future researches are presented regarding literatures published in Korea over the last 10 years. This paper presents an entire investigation into Korean research works on scheduling (2,569 papers) that are published from 2007 to 2016. Especially, detailed analysis was carried out in the following three industry : 1) semiconductor, 2) shipbuilding and 3) automobile. In this paper, approaches to scheduling presented in the literature are catego-rized into the following three categories : 1) application, 2) algorithm, and 3) simulation modeling. First, in the semiconductor industry, scheduling techniques related to semiconductor cleaning processes, photolithography processes, chemical processes, trans-port and transport equipment have been found to be dominant. Second, the shipbuilding industry is focused on assembly processes, transporter, crane and various existing production management system. On the other hand, the scheduling research of the automobile industry is mainly focused on the vehicle movement routing and procurement supply-chain planning algorithm in terms of logistics. The conclusion of this study are expected to provide many implications for various types of academic and practical follow-up studies related to scheduling in consideration of main characteristics of semiconductor, shipbuilding and automobile industries.

디스패칭 룰 기반의 Advanced Planning and Scheduling (APS) 시스템 활용 사례연구

이재용(Jae-yong Lee),신문수(Moonsoo Shin) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.3

Up-to-date business environment for manufacturers is very complex and rapidly changing. In other words, companies are facing a variety of changes, such as diversifying customer requirements, shortening product life cycles, and switching to small quantity batch production. In this situation, the companies are introducing the concept of JIT (just-in-time) to solve the problem of on-time production and on-time delivery for survival. Though many companies have introduced ERP (enterprise resource planning) systems and MRP (material requirement planning) systems, the performance of these systems seems to fall short of expectations. In this paper, the case study on introducing an APS (advanced planning and scheduling) system based on dispatching rules to a machining company and on finding a method to establish an efficient production schedule is presented. The case company has trouble creating an effective production plan and schedule, even though it is equipped with an MRP-based ERP system. The APS system is applied to CNC (computer numerical control) machines, which are key machines of the case company. The overall progress of this research is as follows. First, we collect and analyze the master data on individual products and processes of the case company in order to build a production scheduling model. Second, we perform a pre-allocation simulation based on dispatching rules in order to calculate the priority of each order. Third, we perform a set of production simulations applying the priority value in order to evaluate production lead time and tardiness of pre-defined dispatching rules. Finally, we select the optimal dispatching rule suitable for work situation of the case company. As a result, an improved production schedule leads to an increase in production and reduced production lead time.

제품 및 제조공정의 친환경 정보관리를 위한 Green-BOM 개발

박용주(Yongju Park),신문수(Moonsoo Shin),류광열(Kwangyeol Ryu) (사)한국CDE학회 2012 한국CDE학회 논문집 Vol.17 No.6

The world has faced with various environmental problems such as climatic change, global pollution, and depletion of natural resources. Conventional economic development continues not only to intensify the magnitude of the problems but also to damage growth potential of future generations. Therefore, recent manufacturers are highly required to accommodate themselves to sustainable development that aims at preventing the loss to the future generations. Moreover, the manufacturers are under heavy pressure from various environmental regulations. This paper proposes green bill of material (Green-BOM) which conforms to the environmental regulations to restructure eco-friendly manufacturing system. Green-BOM is useful for managing green product and process information to satisfy several environmental regulations by recording energy consumption, recycle rate, volatile organic compounds (VOCs), substance information, and so on.

국내 금형산업을 위한 제조서비스 모델 개발

이상일(Sangil Lee),류광열(Kwangyeol Ryu),신문수(Moonsoo Shin),김보현(Bohyun Kim) (사)한국CDE학회 2013 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2013 No.1

국내 중소 제조기업은 국제 경쟁력 확보와 기업 핵심역량을 높이기 위한 노력을 게을리 하지 않고 있다. 국내 중소 제조기업의 핵심역량은 주변국가의 제조기업과 경쟁하기 충분하지만 핵심역량을 알리기 위한 홍보 및 마케팅 능력은 부족한 실정이다. 이와 같은 문제점을 해결하기 위한 방안으로 B2B (Business to Business) 전자상거래시장이 대두되었으나 대부분의 B2B시장은 대기업이 주도하는 판매자 중심의 수직적 SCM (Supply Chain Management)형태로 형성되어 있다. 판매자 중심의 B2B시장은 판매자와 구매자의 수가 제한적이기 때문에 다수의 기업에게 중소 제조기업의 핵심역량 정보의 노출이 힘들다. 반면 중개자 중심형 B2B시장은 수평적 구조의 포털 형식으로 다수의 기업에게 다수의 제조기업에 대한 접근 및 정보의 노출이 용이하다. 본 논문에서는 국내 중소 제조기업의 핵심역량을 해외의 수요기업에게 효과적으로 전달하기 위한 스카우팅 시스템 (EMSS; Excellent Manufacturer Scouting System)을 제안하고, 제안된 시스템을 토대로 서비스 모델을 제안한다. 제안된 시스템과 서비스 모델은 국내 중소제조기업에 특화된 중개자 중심형 B2B시장과 수평적 구조의 협업 네트워크를 제공하며, 국내 제조기업의 핵심역량을 해외 수요기업에게 효과적으로 전달할 수 있는 수단이 될 것으로 기대한다.