Kinematic Analysis of an Under-actuated, Closed-loop Front-end Assembly of a Dragline Manipulator
文献类型：期刊论文
| 作者 | Muhammad A. Wardeh1,2; Samuel Frimpong2 |
| 刊名 | International Journal of Automation and Computing
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:4页码:527-538 |
| 关键词 | Dragline mining manipulator underactuated closed-loop mechanism generalized speeds Baumgarte′s stabilization technique (BST) feedforward displacement. |
| ISSN号 | 1476-8186 |
| DOI | 10.1007/s11633-019-1217-4 |
| 英文摘要 | Dragline excavators are closed-loop mining manipulators that operate using a rigid multilink framework and rope and rigging system, which constitute its front-end assembly. The arrangements of dragline front-end assembly provide the necessary motion of the dragline bucket within its operating radius. The assembly resembles a five-link closed kinematic chain that has two independent generalized coordinates of drag and hoist ropes and one dependent generalized coordinate of dump rope. Previous models failed to represent the actual closed loop of dragline front-end assembly, nor did they describe the maneuverability of dragline ropes under imposed geometric constraints. Therefore, a three degrees of freedom kinematic model of the dragline front-end is developed using the concept of generalized speeds. It contains all relevant configuration and kinematic constraint conditions to perform complete digging and swinging cycles. The model also uses three inputs of hoist and drag ropes linear and a rotational displacement of swinging along their trajectories. The inverse kinematics is resolved using a feedforward displacement algorithm coupled with the Newton-Raphson method to accurately estimate the trajectories of the ropes. The trajectories are solved only during the digging phase and the singularity was eliminated using Baumgarte′s stabilization technique (BST), with appropriate inequality constraint equations. It is shown that the feedforward displacement algorithm can produce accurate trajectories without the need to manually solve the inverse kinematics from the geometry. The research findings are well in agreement with the dragline real operational limits and they contribute to the efficiency and the reduction in machine downtime due to better control strategies of the dragline cycles. |
| 源URL | [http://ir.ia.ac.cn/handle/173211/42276]  |
| 专题 | 自动化研究所_学术期刊_International Journal of Automation and Computing |
| 作者单位 | 1.Center for Infrastructure Engineering Studies, Missouri University of Science and Technology, Rolla 65409, USA 2.Department of Mining and Nuclear Engineering, Missouri University of Science and Technology, Rolla 65409, USA |
| 推荐引用方式 GB/T 7714 | Muhammad A. Wardeh,Samuel Frimpong. Kinematic Analysis of an Under-actuated, Closed-loop Front-end Assembly of a Dragline Manipulator[J]. International Journal of Automation and Computing,2020,17(4):527-538. |
| APA | Muhammad A. Wardeh,&Samuel Frimpong.(2020).Kinematic Analysis of an Under-actuated, Closed-loop Front-end Assembly of a Dragline Manipulator.International Journal of Automation and Computing,17(4),527-538. |
| MLA | Muhammad A. Wardeh,et al."Kinematic Analysis of an Under-actuated, Closed-loop Front-end Assembly of a Dragline Manipulator".International Journal of Automation and Computing 17.4(2020):527-538. |
入库方式： OAI收割
来源：自动化研究所
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