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제어시뮬레이션을 위한 생산시스템 로그데이터 기반 플랜트 모델 생성 방법
고민석(Minsuk Ko),천상욱(Sang Uk Cheon),박상철(Sang Chul Park) (사)한국CDE학회 2013 한국CDE학회 논문집 Vol.18 No.1
Presented in the paper is a log data based modeling method for effective construction of a virtual plant model which can be used for the virtual PLC (Programmable Logic Controller) simulation. For the PLC simulation, the corresponding virtual plant, consisting of virtual devices, is required to interact with the input and output symbols of a PLC. In other words, the behavior of a virtual device should be the same as that of the real device. Conventionally, the DEVS (Discrete Event Systems Specifications) formalism has been used to represent the behavior a virtual device. The modeling using DEVS formalism, however, requires in-depth knowledge in the simulation area, as well as the significant amount of time and efforts. One of the key ideas of the proposed method is to generate a plant model based on the log data obtained from the production system. The proposed method is very intuitive, and it can be used to generate the full behavior model of a virtual device. The proposed approach was applied to an AGV (Automated Guided Vehicle).
디지털 환경기반의 이송장치 제어 검증을 위한 시뮬레이션 적용 연구
고민석(Minsuk Ko),홍상현(Sanghyun Hong),곽종근(Jong-Geun Kwak),여성주(Sungjoo Yeo),왕지남(Gi-Nam Wang),박상철(Sang C. Park) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
This paper proposed a control simulation method for design and verification of the transport system in an automobile assembly line based on digital manufacturing system. The design of the transport system involves two major activities: mechanical design (device specification) and electrical design (device behavior and system control). Conventionally, the simulation and emulation system of the transport system focuses on the abstract level, which mainly deals with design verification, alternative comparison, and system diagnosis. Although it can provide overall system visibility in monitoring how well it works in the process and view, its simulation models are not sufficiently realistic to be used for a detailed design or for implementation purposes. In this paper, a digital simulation model for a transport system in an automotive assembly line is constructed by adapting a digital manufacturing methodology. We use the concept of the “Virtual Probe”, which transport a carrier instead of the belt of the conveyor. In conclusion, the proposed method is valuable in the process of test run in the shop floor. This method would reduce the time and effort for validating the manufacturing system and improve the productivity and integrity of the control program.
가상환경 기반의 컨베이어 시스템 검증을 위한 제어 시뮬레이션 연구
고민석(Minsuk Ko),박상철(Sang Chul Park) (사)한국CDE학회 2012 한국CDE학회 논문집 Vol.17 No.4
This paper proposed a control simulation method for design and verification of the transport system in an automobile assembly line based on digital manufacturing system. The design of the transport system involves two major activities: mechanical design (device specification) and electrical design (device behavior and system control). Conventionally, the simulation and emulation system of the transport system focuses on the abstract level, which mainly deals with design verification, alternative comparison, and system diagnosis. Although it can provide overall system visibility in monitoring how well it works in the process and view, its simulation models are not sufficiently realistic to be used for a detailed design or for implementation purposes. In this paper, a digital simulation model for a transport system in an automotive assembly line is constructed by adapting a digital manufacturing methodology. We use the concept of the “Virtual Probe”, which transport a carrier instead of the belt of the conveyor. In conclusion, the proposed method is valuable in the process of test run in the shop floor. This method would reduce the time and effort for validating the manufacturing system and improve the productivity and integrity of the control program.
고민석(Minsuk Ko),신혜선(Hyeseon Shin),왕지남(Ginam Wang),박상철(Sang Chul Park) (사)한국CDE학회 2011 한국CDE학회 논문집 Vol.16 No.4
This paper proposes a method for reusing kinematic design data for virtual facilities. Making a virtual model of a facility involves two major activities: geometric design (virtual model visualization) and kinematic design that should be remodeled frequently whenever design changes occur. Conventionally, a virtual model of an automated facility focuses on the design level, which mainly deals with design verification, alternative comparison, and geometric model diagnosis. Although a design level model can be designed with the information of past models from PLM system, a simulation level model is not sufficient utilized to be reused for kinematic design purpose. We propose a method for reusing kinematic information of a past simulation model to cope with this problem. We use the concept of the ‘center of mass’, which is a point representing the mean position of the matter in a body or system. And we also use comparison method of a boundary box to identify which 3D objects have to be involved from the design model to a link structure that is contained in the simulation model. Because a proposed method only use not a historical approach but a geometrical approach, it is more effective to apply to the field.
키네마틱 정보를 갖는 가상설비 설계 데이터 재활용 방법론
고민석(Minsuk Ko),신혜선(Hye S. Shin),왕지남(Ginam Wang),박상철(Sang C. Park) (사)한국CDE학회 2011 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2011 No.1
This paper proposes a method for reusing kinetic design data for virtual facilities. Making a virtual model of a facility involves two major activities: geometric design (virtual model visualization) and kinetic design that should be remodeled frequently whenever design changes occur. Conventionally, a virtual model of an automated facility focuses on the design level, which mainly deals with design verification, alternative comparison, and geometric model diagnosis. Although a design level model can be designed with the information of past models from PLM system, a simulation level model is not sufficient utilized to be reused for kinetic design purpose. We propose a method for reusing kinetic information of a past simulation model to cope with this problem. We use the concept of the "center of mass", which is a point representing the mean position of the matter in a body or system. And we also use comparison method of a boundary box to identify which 3D objects have to be involved from the design model to a link structure that is contained in the simulation model. Because a proposed method only use not a historical approach but a geometrical approach, it is more effective to apply to the field.
안의국(Euikoog Ahn),고민석(Minsuk Ko),천상욱(Sang Uk Cheon),박상철(Sang Chul Park) (사)한국CDE학회 2013 한국CDE학회 논문집 Vol.18 No.2
Computer-based modeling and simulation (M&S) techniques have become an essential component in the development of new weapons systems. M&S techniques provide a means to simulate military training, strategies, military doctrines, and weapons acquisition processes. This paper proposes a small scale engagement scenario generation method. This work also includes a process for scenario generation and visualization. The proposed scenario generation methodology employs the Timed-FSA (finite state automata) and DFS (depth first search) algorithms. The proposed scenario generation method is verified using a one-on-one combat engagement scenario between two submarines. In addition, we suggest a scenario generation process including whole scenario generation and scenario visualization.
신혜선(Hyeseon Shin),고민석(Minsuk Ko),홍상현(Sang Hyun Hong),박상철(Sang Chul Park),왕지남(Ginam Wang) (사)한국CDE학회 2011 한국CDE학회 논문집 Vol.16 No.5
Product systems are quickly and frequently changed because Product Life Cycle is continuously reduced and adopting new product is steadily fast. Thus, various studies are progressed using simulation which is one of digital manufacturing. The research that is concerning simulation of control verification for shorten the commissioning which has a lot of trial and error is in progress. Also, simulation of control verification has strength that it can catch the errors in advance. However, a control program in simulation needs virtual factory for representation of control information. For this reason, excessive time and energy is put into controlling the virtual factory. So, in this paper, we construct library which is using exist data, in order to overcome limitation of these problems. Furthermore, we suggest methodology which can model and verify the process more speedy using library. Especially, we give body to the BB/BR Line process which has many altering equipment and need high technology effectively using physical and logical modeling. We can set up a control simulation environment very rapidly, as well as cut process time down using our suggestion.
신혜선(Hye S. Shin),고민석(Minsuk Ko),왕지남(Ginam Wang),박상철(Sang C. Park) (사)한국CDE학회 2011 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2011 No.1
Product systems are quickly and frequently changed because product Life Cycle is continuously reduced and adopting new product is steadily fast. Thus, various studies are progressed using simulation which is one of digital manufacturing. The research that is concerning simulation of control verification for shorten the commissioning which has a lot of trial and error is in progress. Also, simulation of control verification has strength that it can catch the errors in advance. However, a control program in simulation needs virtual factory for representation of control information. For this reason, excessive time and energy is put into controlling the virtual factory. So, in this paper, we construct library which is using exist data, in order to overcome limitation of these problems. Furthermore, we suggest methodology which can model and verify the process more speedy using library. Especially, we give body to the BB/BR Line process which has many altering equipments and need high technology effectively using physical and logical modeling. We can set up a control simulation environment very rapidly, as well as cut process time down using our suggestion.
안의국(Euikoog Ahn),정용호(Yong H. Chung),함원경(Won. K. Hwam),고민석(Minsuk Ko),박상철(Sang C. Park) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
Computer-based modeling and simulation (M&S) techniques have become an essential component in the development of new weapons systems. M&S techniques provide a means to simulate military training, strategies, mil - itary doctrines, and weapons acquisition processes. In this paper proposed a small scale engagement scenario generation method. In this work also includes a framework of scenario generation and simulation for scenario generation, simulation and visualization. The proposed scenario generation methodology employs the Timed-FSA (finite state automata) and DFS (depth first search) algorithms. The proposed scenario generation method is verified using a one-on-one combat engagement scenario between two submarines