期刊
SOFT ROBOTICS
卷 4, 期 4, 页码 305-316出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/soro.2017.0028
关键词
soft robotics; compliant grippers; universal jamming gripper; underwater manipulation; remotely; operated vehicles
类别
资金
- United States Naval Sea Systems Command (NAVSEA) through the Naval Engineering Education Consortium Grant [N00174-15-C-0024]
In this work we experimentally demonstrate (a) that the holding strength of universal jamming grippers increases as a function of the jamming pressure to greater than three atmospheres, and (b) that jamming grippers can be operated in the deep sea in ambient pressures exceeding one hundred atmospheres, where such high jamming pressures can be readily achieved. Laboratory experiments in a pressurized, water-filled test cell are used to measure the holding force of a universal'' style jamming gripper as a function of the pressure difference between internal membrane pressure and ambient pressure. Experiments at sea are used to demonstrate that jamming grippers can be installed on, and operated from, remotely operated vehicles at depths in excess of 1200 m. In both experiments, the jamming gripper consists of a latex balloon filled with a mixture of fresh water and similar to 200 mu m glass beads, which are cheaply available in large quantities as sand blasting media. The use of a liquid, rather than a gas, as the fluid media allows operation of the gripper with a closed-loop fluid system; jamming pressure is controlled with an electrically driven water hydraulic cylinder in the laboratory and with an oil hydraulic-driven large-bore water hydraulic cylinder at sea.
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