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  • 學位論文

角柱形物體之夾持點設計與夾取流程建立

Gripping Points Design and Grasping Pipeline Establishment for Polygonal Prisms

指導教授 : 李志中

摘要


在工廠的生產線上,要進行較複雜的加工任務或物件取放任務時,機械手臂通常會導入電腦視覺系統,藉以輔助自動化產線,以提高其效率,而本論文旨在研究與開發一種基於視覺之自動化物件取放流程。 本論文使用二指平行夾爪發展出一套自動夾取流程,針對具角點的任意角柱形物體,結合影像處理並設計演算法,提供一個簡易的使用者介面,讓使用者能夠快速且有效率地執行夾取工作。此一流程首先使用一固定位置之相機拍攝物體,接著對輸入影像進行影像處理後可以獲得角柱截面的所有角點位置;再來,利用這些角點位置計算最佳之夾持點,最後命令機械手臂移動至夾持點位置並夾取物體。本研究並實際測試了多種角柱形物體,以證實本夾取流程的可行性。

並列摘要


In the production line of a factory, to perform complex machining work or object pick-and-place, a computer vision system is commonly added to assist the automated production line so as to improve the efficiency. The purpose of this thesis is to develop a vision-based automated object pick-and-place planning. This thesis developed an automated object pick-and-place plan using two-fingered gripper. The plan, suitable for polygonal prisms with identifiable corner points, integrated image processing and design algorithm into a robotic system and provided a user interface to allow users to manipulate the robot to grip the object in a quick and efficient way. In the last, this work validated the process with a real robot.

參考文獻


[1]B. Leon, A. Morales, and J. Sancho-Bru, “From Robot to Human Grasping Simulation,” Springer, pp. 19, 2014.
[2]劉貽仁,”機器手掌與機器手臂自動抓取規劃與軌跡規劃”,碩士論文,國立台灣大學機械工程學系,2016。
[3]K. Koyama, Y. Suzuki, A. Ming, and M. Shimojo, “Integrated Control of a Multi-fingered Hand and Arm using Proximity Sensors on the Fingertips,” presented at the IEEE ICRA, 2016.
[4]D. Buchholz, M. Futterlieb, S. Winkelbach, and F. M. Wahl, “Efficient Bin-Picking and Grasp Planning Based on Depth Data,” Proceedings of the 2013 IEEE International Conference on Robotics and Automation, Karlsruhe, Germany, 2013.
[5]Nguyen Thanh Hung, “3-D Object Recognition and Localization of Randomly Stacked Objects for Automation,” doctoral thesis, National Taipei University of Technology Electromechanical Technology, Taipei, Taiwan, 2015.

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