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조용준(Yongjun Cho),윤해룡(Haeyong Yun),홍형길(Hyunggil Hong),오장석(Jangseok Oh),박희창(Hui Chang Park),강민수(Minsu Kang),박관형(Kwanhyung Park),서갑호(Kabho Seo),김순덕(Sunduck Kim),이영태(Youngtae Lee) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.9
We developed a platform that was capable of autonomous steering in a furrow environment. It was developed to autonomously control steering by recognizing the furrow using a laser distance, three-axis tilt, and temperature sensor. The performance evaluation indicated that the autonomous steering success rate was 99.17%, and it was possible to climb up to 5° on the slope. The usage time was approximately 40 h, and the maximum speed was 6.7 ㎞/h.
적층제조를 고려한 농업용 근력 보조 외골격 슈트의 설계
박관형(Kwanhyung Park),윤해룡(Haeyong Yun),조용준(Yongjun Cho),홍형길(Hyunggil Hong),장선호(Sunho Jang),강민수(Minsu Kang),김재효(Jaehyo Kim),김호찬(Hochan Kim) 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.12
Because there are few constraints on the structure design of a product in manufacturing, additive manufacturing technology aids to the simplification of many manufacturing processes in numerous industries. In instance, as compared to traditional cutting, casting, and clay modeling, it is able to produce prototype models relatively rapidly and simply. This is especially useful when employing additive manufacturing technologies to create robots or wearable platforms with complex shapes and many considerations. This article presents an application case for a wired power transmission type wearable suit system for a single actuator, with the assumption that it will be created using additive manufacturing technology to address issues with existing agricultural wearable robots.
A Study on Bird Deterrent System to Improve the Performance of Repelling Harmful Birds
Yongjun Cho(조용준),Haeyong Yun(윤해룡),Hyunggil Hong(홍형길),Jangseok Oh(오장석),Senongyong Woo(우성용),Suhwan Song(송수환),Dongwoo Kim(김동우),Minsu Gang(강민수),Kabho Seo(서갑호),Youngtae Lee(이영태),Jaedoo Jo(조재두) 한국기계가공학회 2020 한국기계가공학회지 Vol.19 No.8
We improved the sound pressure of the speaker and allowed the speaker to rotate 360 degrees to improve the effectiveness of the acoustic type bird repellent system. The prototype of the bird repellent system was developed by evaluating sound pressure characteristics by distance and direction and installing orchards. As a result of the evaluation, the extermination sound pressure increased from a distance of about 30 m to a maximum of 60 m, and through the rotary speaker, the extermination distance could be widened in all directions without specific direction.
Direct Write 기술을 이용한 3DCD 의 제작
고형주(HyoungJoo Ko),윤해룡(Haeyong Yun),이인환(InHwan Lee),이래찬(RaeChan Lee),김호찬(HoChan Kim) (사)한국CDE학회 2014 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2014 No.2
Generally electrical circuits are fabricated as PCB(Printed Circuit Board) and mounted on a casing of the product. And it requires lots of other parts and some labor for assembly. Recently a molding technology is increasingly applied to embed simple circuits on a plastic casing. The technology is called as MID(Molded Interconnected Device). Therefore this paper introduces a new MID fabrication process by using direct 3D printing technology. And applied to an automotive part of curse control switch. The methodology and design is shown.
밭 노지 작업을 위한 모듈형 농업 로봇 플랫폼 개선에 관한 연구
김동우(Dongwoo Kim),홍형길(Hyunggil Hong),조용준(Yongjun Cho),윤해룡(Haeyong Yun),오장석(Jangseok Oh),강민수(Minsu Gang),박희창(Huichang Park),서갑호(Kabho Seo) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.10
Our study introduces an improved modular agricultural platform to provide convenience to agricultural workers. We upgrade the platform design in three parts, namely, by adding a 458 pattern tire, electricity control, and four-wheel steering function, to improve the platform performance. Results showed that the upgrades enhanced the platform performance and reduced its overall weight as compared with the existing platform. To demonstrate the performance of our improved platform, we conducted five types of experiments with respect to the climbing angle, variable width, attitude control, speed, and obstacle passing.