期刊
出版社
ELSEVIER - DIVISION REED ELSEVIER INDIA PVT LTD
DOI: 10.1016/j.jestch.2023.101537
关键词
Robotics; Variable-stiffness; Gripper; Grasping; Benchmarking
This paper presents a design of grippers for delicate edible products, utilizing a soft and variable-stiffness approach. The gripper prototypes, composed of rigid and soft parts, are evaluated experimentally and compared using standardized benchmarks. A new benchmark for edible grasping is proposed and used to measure the performance of the grippers. The final gripper prototype demonstrates sufficient payload and adaptability in grasping various edibles without causing damage.
The general manipulation of delicate edible products requires of specific grippers able to firmly grasp these kind of products without damaging them. To address this problem we follow a soft and variable-stiffness approach. In this paper we design and construct successive gripper prototypes which fingers are composed of rigid and soft parts. The stiffness of the soft parts can be modified using the jamming principle. The gripper properties are experimentally evaluated using a subset of NIST benchmarks. This allows to obtain comparable and standardised results, used to improve the initial gripper design. In addition a new benchmark, the edible grasping benchmark, is proposed and used to measure the performance of the grippers while grasping fruits and vegetables. The final gripper prototype overcomes the problems observed in fruit and vegetable picking systems. It has been demonstrated in the experimental tests that the gripper has sufficient payload and adaptability to grasp several edibles without damage.
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