파지 안정성을 강화한 과수 수확용 로봇 그리퍼의 설계 개선
Improved Design for Enhanced Grip Stability of the Flexible Gripper in Harvesting Robot
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초록
In robotic harvesting, a gripper to manipulate the fruits needs to be attached to the robot system. We proposed a flexible robot gripper that can actively respond to the shape of an object such as fruits in the previous work. However, we found that there is a possibility of not being reliably gripped when the object slides during contact with a finger. In this paper, the improved gripper design is proposed to fundamentally solve the problems of the previous gripper. The position of the finger and the maximum closed position are changed, and the design improvement is performed to increase the grip stability by changing the installation angle of the link portion of the finger. Based on the improved design, a modified gripper is fabricated by 3-D printing, and then gripping experiments are performed on spherical object and fruit model object. It is shown that the gripper can stably grip the objects without excessive bending of the finger link of the gripper. The contact pressure between the finger and the surface of the object is measured, and it is verified that it is a sufficiently small pressure that does not cause damage to the fruit. Therefore, the proposed gripper is expected to be successfully applied in harvesting.
Abstract
In robotic harvesting, a gripper to manipulate the fruits needs to be attached to the robot system. We proposed a flexible robot gripper that can actively respond to the shape of an object such as fruits in the previous work. However, we found that there is a possibility of not being reliably gripped when the object slides during contact with a finger. In this paper, the improved gripper design is proposed to fundamentally solve the problems of the previous gripper. The position of the finger and the maximum closed position are changed, and the design improvement is performed to increase the grip stability by changing the installation angle of the link portion of the finger. Based on the improved design, a modified gripper is fabricated by 3-D printing, and then gripping experiments are performed on spherical object and fruit model object. It is shown that the gripper can stably grip the objects without excessive bending of the finger link of the gripper. The contact pressure between the finger and the surface of the object is measured, and it is verified that it is a sufficiently small pressure that does not cause damage to the fruit. Therefore, the proposed gripper is expected to be successfully applied in harvesting.
참고문헌 (18)
- 최근하, "비전 카메라 기반의 무논환경 자율주행 로봇을 위한 중심영역 추출 정보를 이용한 주행기준선 추출 알고리즘", 로봇학회 논문지, 11(1), pp.1~8 (2016), 한국로봇학회[DOI]
- K. J. Kim, "Trends and Prospects of Smart Farm Technology", Electronics and Telecommunications Trends, 30(5), pp.1~10 (2015)
- C. W. Bac, "Harvesting Robots for High-value Crops : State-of-the-art Review and Challenges Ahead", Journal of Field Robotics, 31(6), pp.888~911 (2014)[DOI]
- D. Font, "A proposal for automatic fruit harvesting by combining a low cost stereovision camera and a robotic arm", Sensors, 14(7), pp.11557~11579 (2014)[DOI]
- K. Tanigaki, "Cherryharvesting robot", Computers and electronics in agriculture, 63(1), pp.65~72 (2008)[DOI]
- E. J. Van Henten, "Optimal manipulator design for a cucumber harvesting robot", Computers and electronics in agriculture, 65(2), pp.247~257 (2008)[DOI]
- "SRI Spins off Abundant Robotics & Vacuum Robot Harvester"[URL]
- 유홍선, "와이어 기반의 적응형 로봇 핸드", 로봇학회 논문지, 9(4), pp.258~263 (2014), 한국로봇학회[DOI]
- 최정현, "고중량의 원통형 작업대상물 파지용 집게형 그리퍼의 슬립 조건과 이를 반영한 설계 및 해석", 로봇학회 논문지, 10(4), pp.193~199 (2015), 한국로봇학회[DOI]
- 이승용, "그리퍼 정밀 제어를 위한 이중 제어기 시스템의 구현 및성능 평가", 로봇학회 논문지, 13(1), pp.72~78 (2018), 한국로봇학회[DOI]
- Y. Xiong, "Design and evaluation of a novel cable-driven gripper with perception capabilities for strawberry picking robots", 2018 IEEE International Conference on Robotics and Automation (ICRA) (2010)
- H. Yaguchi, "Development of an autonomous tomato harvesting robot with rotational plucking gripper", 2016 IEEE, 2016, ~
- S. Cho, "Design of a 4-finger end-effector for paprika harvesting", 2018 18th International Conference on Control, Automation and Systems (ICCAS) (2018)
- 최두순, "비정형 물체의 안정적인 파지를 위한 유연한 로봇 그리퍼 설계", 제어.로봇.시스템학회 논문지, 26(3), pp.184~190 (2020), 제어·로봇·시스템학회[DOI]
- Z. Li, "Physical and mechanical properties of tomato fruits as related to robot’s harvesting", Journal of Food Engineering, 103(2), pp.170~178 (2010)[DOI]
- P. Sirisomboon, "Evaluation of tomato textural mechanical properties", Journal of Food Engineering, 111(4), pp.618~624 (2012)[DOI]
- J. Hemming, "Field test of different end-effectors for robotic harvesting of sweet-pepper", Acta Horticulturae, 1130 (2016)[DOI]
- Y. -C. Chiu, "Development of the endeffector of a picking robot for greenhouse-grown tomatoes", Applied Engineering in Agriculture, 29(6), pp.1001~1009 (2013)[DOI]