쾌속조형기술의 구현을 위한 3차원 제어시스템 개발

조성목(Cho Sung-Mok) 한국산학기술학회 2007 한국산학기술학회논문지 Vol.8 No.4

쾌속조형기술(Rapid Prototyping Technology)은 설계단계에 있는 3차원 모델을 시제품(Prototype)으로 다른 중간과정 없이 빠르게 생성하는 새로운 기술을 말한다. CAD 모델 데이터는 3차원 형상 시스템이지만 모니터 화면이나 문서로 출력할 때는 2차원으로 밖에 표시되지 않는다. 반면에 쾌속조형기술은 설계된 3차원 CAD데이터를 2차원 단면 데이터로 변환한 후 RP(Rapid Prototyping)공정을 적용하여 순차적으로 적층해 감으로써 CAD데이터와 같은 3차원 업체 형상을 제작하게 된다. 그러나 RP 시스템은 매우 가격이 비싸서 칫솔이나 완구 등과 같은 생활용품을 제작하는 중소가업에서는 구입하기 어려운 상황이다. 본 논문에서는 오픈소스를 사용하여 RP 기술을 구현함으로써 저렴한 가격으로 구매할 수 있는 RP 시스템을 개발하기 위한 3차원 제어시스템을 제안하였다. Rapid Prototyping (RP) is a technology that produces prototype parts from 3D computer aided design model data without intermediate processing technology rapidly. CAD model data are created from 3D object digitizing systems but presented just as 2D data when they are printed as a hard copy or displayed on a monitor. However, Rapid Prototyping Technology fabricates 3D objects the same that CAD data because it transforms designed 3D CAD data into 2D cross sectional data, and manufactures layer by layer deposition sequentially. But most of all the small and medium scale companies which produce a toothbrush, a toy and such like provisions are in difficult situations to buy RP system because it is very expensive. In this paper, we propose a 3D control system adopting open source programs for implementing Rapid Prototyping Technology in order that RP system can be purchase at a moderate price.

Shape Reconstruction, Shape Manipulation, and Direct Generation of Input Data from Point Clouds for Rapid Prototyping

Dong-Jin Yoo,Hyuk-Hong Kwon 한국정밀공학회 2009 International Journal of Precision Engineering and Vol.10 No.1

Shape reconstruction from point clouds has received considerable attention in recent years on account of its ability to directly integrate reverse engineering with rapid prototyping. The primary objective of this study is to develop an integrated system that enables one to generate input data for rapid prototyping by constructing complete shape models from point clouds obtained with various measuring devices, including laser scanners, digitizers, and coordinate-measuring machines. We first present a novel approach to reconstructing a shape from point clouds based on implicit surface interpolation combined with domain decomposition. We then propose various related algorithms for generating input data for rapid prototyping, ranging from shape manipulation to complete solid generation. The validity of this new technique is demonstrated for a variety of point clouds with differing degrees of complexity.

Rapid Prototyping Instructional Systems Development에 근거한 국군간호사관학교의 군 간호학 교육체계 개발

조순영 ( Joe Seun-young ),김혜원 ( Kim Hyewon ),전윤경 ( Jeon Yungyong ),정은영 ( Jung Eun-young ) 국군간호사관학교 군건강정책연구소 2018 군진간호연구 Vol.36 No.1

Purpose : The aim of the study is to develop military nursing curriculum of Korea Armed Forces Nursing Academy (KAFNA). Methods: Rapid Prototyping Instructional Systems Development (RP-ISD) was used. The literatures and current military nursing course syllabi were reviewed and 4 experienced instructors at KAFNA were interviewed to verify the current educational goal. To analyze educational needs and relevant contents, 36 newly graduated nursing officers and 40 head nursing officers working in military hospitals as well as the instructors teaching military nursing subjects were interviewed. Data was collected during the interviews and analysed into the categories and themes using content analysis. Results: The goal, objectives, subjects, and components of military nursing curriculum were proposed in the 3 Prototypes. Based on the reviews for usability by the experts who were education specialists, nursing faculty members and experienced nursing officers, prototypes were revised in the final version. The KAFNA military nursing curriculum were finalized with 11 subjects and their detailed components. Conclusion: The study proposed the methodology to develop a nursing curriculum, integrated with skills necessary in military nursing practice.

Rapid Prototyping을 이용한 금속제품의 쾌속제작공정 개발

주영철 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1

Two rapid manufacturing processes for metal parts by using rapid prototyping have been developed. One process makes a polymer mold 꼐 뭉 uses a low melting temperature alloy as a casting meterial. This process recuces the manufacturing steps significantly and can be used to fabricate small precise metal parts or jewelry master patterns. The second process makes wax prototype that is used in the investment casting process. The RP makes pattern by CastForm powder. By dipping the CastForm pattern into the melting wax liquid, wax pattern is fabricated. By folowing the investment casting process with the wax pattern, final metal parts can be obtained. This process reduces time and cost considerably comparing the convantional wax pattern manufacturing process that makes wax molds by hands.

Rapid Control Prototyping기법을 이용한 전자식 스로틀 제어기 설계 사례 연구

강종진(Jongjin Kang),이우택(Wootaik Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

This paper describes a case study to design of Electronic Throttle Controller(ETC) using Rapid Control Prototyping(RCP), in order to shorten the development cycle. RCP is a technique which reduces the development time through the model-based control design. ETC should control the position preciously and diagnose the input and feedback signals. The ETC model is designed by using Simulink<SUP>®</SUP>, Stateflow<SUP>®</SUP>" and S-function to insert a legacy code. The designed ETC model is validated by two process steps. The first step is the off-line simulation with throttle model and the second step is on-line simulation with the real throttle platform. In order to interface a controller model with the physical hardware, during on-line simulation, Prototyping System and Real-Time Interface block of dSPACE is used. ControlDesk<SUP>®</SUP> of dSPACEC is employed for the purpose of real time monitoring and calibration.

Rapid Prototyping을 이용한 AUTOSAR 기반의 FlexRay 노드 개발

손병점(Byeong Jeom Son),최광호(Gwang Ho Choi),하경남(Kyoung Nam Ha),이경창(Kyung Chang Lee),이석(Suk Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Driven by the development of innovative vehicle applications, contemporary automotive E/E (electric/electronic) architecture requires a high level of networking and software platform. In networking, FlexRay is a communication protocol for IVN(In-Vehicle Network) in safety critical applications such as x-by-wire. In software platform, AUTOSAR serves as a basic infrastructure for the management of functions within both future applications and standard software modules. In control engineering, Rapid Control Prototyping is a process which lets the engineer quickly test and iterate their control strategies on a real-time computer with real input/output devices. This paper focuses on implementation of FlexRay with AUTOSAR using rapid prototyping. This paper presents a development of FlexRay module based on FlexRay protocol specification V2.1 as well as FlexRay software platform with AUTOSAR standard specification V2.0.1.

Rapid Prototyping으로 제작한 3D Medical Model의 오차 측정에 관한 연구 - 임상적용 가능성 및 사례

최진영(Jin Young Choi),최정호(Jung Ho Choi),김남국(Nam Kuk Kim),이종기(Jong Ki Lee),김명기(Myeng Ki Kim),김명진(Myung Jin Kim),김영호(Yeong Ho Kim) 대한구강악안면외과학회 1999 대한구강악안면외과학회지 Vol.25 No.4

Presented in this paper are the experimental results that measure rapid prototyping (RP) errors in 3D medical models. We identified various factors that can cause dimensional errors when producing RP models, specifically in maxillofacial areas. For the experiment, we used a human dry skull. A number of linear measurements based on landmarks were first obtained on the skull. This was followed by CT scanning, 3D model reconstruction, and RP model fabrication. The landmarks were measured again on both the reconstructed models and the physical RP models, and these were compared with those on dry skull. We focused on major sources of errors, such as CT scanning, conversion from CT data to STL models, and RP model fabrication. The results show that the overall error from skull to RP is 0.64±0.36㎜(0.71±0.66%) in absolute value. This indicates that the RP technology can be acceptable in the real clinical applications. A clinical case that has applied RP models successfully for treatment planning and surgical rehearsal is presented. Although the use of RP models is rare in the medical area yet, we believe RP is promising in that it has a great potential in developing new tools which can aid diagnosis, treatment planning, surgical rehearsal, education, and so on.

경혈학실습 체제적 교수설계를 위한 RPISD 모형 적용 연구

조은별,김재효,홍지성,Cho, Eunbyul,Kim, Jae-Hyo,Hong, Jiseong 경락경혈학회 2022 Korean Journal of Acupuncture Vol.39 No.3

Objectives : Instructional design is the systematic approach to the Analysis, Design, Development, Implementation, and Evaluation of learning materials and activities. We aimed to apply the rapid prototyping to instructional systems design (RPISD) in meridianology laboratory, a subject in which students train acupuncture to develop lesson plan. Methods : The needs of the stakeholders including client, subject matter expert and students were analyzed using the performance needs analysis model. Task analysis was implemented by observation and interview. First prototype was drafted and implemented in meridianology laboratory class once. The second prototype was modified from the first, by usability evaluation of the stakeholders. Results : The client requested an electronically documented manual to improve the quality of acupuncture training. The learner requested an extension of practice time and detailed practice guidelines. The main problems of students' performance were some cases of violation of clean needle technique, the lack of communication between the operator and recipient in direct, and lack of confidence in their own performance. Stakeholders were generally satisfied with the proposed first prototype. Second prototype of lesson plan was produced by modifying some contents. Conclusions : A lesson plan was developed by applying the systematic RPISD model. It is expected that the developed instructional design may contribute to the quality improvement of meridianology laboratory education.

SLM System을 이용한 바이오 메디컬 엔지니어링분야의 활용

김진섭(Jin-Seop Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5

From the advent of additive fabrication technique in late 1980 in the world, prototypes have been easily manufactured directly from digital data of the products without any operational standing beside the machine. In these concept of application of additive fabrication techniques for producing prototypes, these kinds of solid freeform fabrication techniques have been called as Rapid Prototyping techniques due to faster and easier manufacturing of prototypes. These RP technologies are getting better and enhanced in manufacturing sources and materials, the range of the applications have been wider beyond prototyping and the applications have been reached to produce real products for use in the markets, then the technology could be regarded as beginning concept of additive fabrication technology and/or solid free form fabrication technology again. Because it has been caused from the usage of layer by layer incremental manufacturing process and its applications have been over the production of prototypes. Here the metallic additive fabrication technology shall be announced to show bio-medical applications using SLM(Selective Laser Meting) technology. As common RP system, it takes STL file for import and produces metal parts.

Blended PBL을 위한 문제해결형 온라인 교육시스템 설계 및 개발

류은수 한국교육정보미디어학회 2018 교육정보미디어연구 Vol.24 No.2

The purpose of this study is to design and develop a problem-solving online education system for blended PBL that can be used in university education field. It overcomes the environmental limitations such as the burden of the teachers in the offline PBL classroom operation and the concurrency and circularity of the learning units required in the teaching method. This contributes to the formation of an educational foundation that will improve the problem-solving and collaborative learning capabilities required of college students today in the era of The Fourth Industrial Revolution and we can provide more dynamic problem-solving learning by going further than existing e-learning. In order to carry out this research, firstly, Rapid prototyping ISD model, which is effective in developing online education system, developed prototype-I rapidly by analyzing, designing, prototyping, and developing it nonlinearly and simultaneously. Based on continuous interactions and feedback between the professor and the developer, I have reflected the practical requirements for developing a problem-solving online education system for the final version of Blended PBL. Second, the operation principle and main function of the problem-solving online education system for blended PBL developed according to Rapid prototyping ISD model's step-by-step instructional design strategy are centered on student mode and manager mode. Third, in order to review the criterion-related validity of the instructional design, the validity of the questionnaire was evaluated through the usability evaluation of the expert council, and both the content validity ratio (CVR) and the inter relater agreement (IRA) of the evaluator were met and I have summarized the improvement of problem-solving online education system for blended PBL in response to descriptive questions. Based on the results of the study, the conclusions were searched and the meaning of the problem-solving online education system for blended PBL was discussed. 본 연구는 오프라인 PBL 수업운영에서 발생하는 교수자의 부담과 수업방식에서 요구되는 학습단위의 동시성 및 순환성 등의 환경적인 제한점들을 극복하고, 대학교육 현장에서 활용할 수 있는 Blended PBL을 위한 문제해결형 온라인 교육시스템을 설계하고 개발하는데 그 목적이 있다. 이것은 4차 산업혁명 시대를 맞이한 오늘날 대학생들에게 요구되는 문제해결능력 및 협력학습 역량을 향상시킬 수 있는 교육적 토대를 형성하는데 기여를 하며, 기존의 e-러닝에서 한걸음 더 나아가 보다 역동적인 문제해결형 학습을 제공할 수 있다. 이 연구를 수행하기 위해 첫째, 온라인 교육시스템 개발에 효과적인 대안적 교수체제설계 모형의 분석−설계−프로토타입−개발 단계를 비선형적이고 동시적으로 진행되도록 해, 빠르게 prototype-I을 개발하였다. 그리고 교수자와 개발자 간의 지속적인 상호작용 및 피드백 결과를 바탕으로 최종 버전의 Blended PBL을 위한 문제해결형 온라인 교육시스템 개발에 필요한 실제적인 요구사항을 최대한 반영하였다. 둘째, 대안적 교수체제설계 모형의 단계별 교수설계 전략에 따라 개발한 Blended PBL을 위한 문제해결형 온라인 교육시스템의 동작원리 및 주요기능은 학습자 모드와 관리자 모드를 중심으로 제시하였다. 셋째, 교수설계의 준거타당도 검토를 위해 전문가협의회의 사용성 평가를 통한 타당도 분석결과 문항별 내용타당도비율(CVR) 및 평가자간 반응일치도(IRA) 모두 기준치를 충족하였으며, 서술형 질문에 대한 응답으로 Blended PBL을 위한 문제해결형 온라인 교육시스템의 개선점을 정리하였다. 이와 같은 연구결과를 바탕으로 탐구하고자 했던 결론을 도출하고, Blended PBL을 위한 문제해결형 온라인 교육시스템 설계 및 개발이 갖는 의의에 대하여 논의를 하였다.