GelSight Baby Fin Ray: A Compact, Compliant, Flexible Finger with High-Resolution Tactile Sensing

Liu, Sandra Q.; Ma, Yanxing; Adelson, Edward H.

doi:10.1109/robosoft55895.2023.10122078

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…Sandra et al [ 16 ] placed a gel sheet with feature points and a small camera inside the Fin Ray structure and used image processing to estimate the contact shape and force by linearly deforming the gel sheet. Furthermore, GelSight Baby Fin Ray [ 17 , 18 ], which minimizes the sensor-unrecognizable area by devising the camera arrangement, has also been developed. However, these two methods are considered to affect the grasping characteristics of the FRSG, and the part with a built-in sensor is easily damaged.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Contact Force and Shape Change on Grasping a Square Object Using an Actual Fin Ray Soft Gripper

Kitamura,

Matsushita,

Nakatani

2023

Sensors

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The Fin Ray-type soft gripper (FRSG) is a typical soft gripper structure and applies the deformation characteristics of the Fin Ray structure. This structure functions to stabilize the grasping of an object by passive deformation due to external forces. To analyze the performance of detailed force without compromising the actual FRSG characteristics, it is effective to incorporate multiple force sensors into the grasping object without installing them inside the Fin Ray structure. Since the grasping characteristics of the FRSG are greatly affected by the arrangement of the crossbeams, it is also important to understand the correspondence between the forces and the geometry. In addition, the grasping characteristics of an angular object have not been verified in actual equipment. Therefore, in this study, a contact force measurement device with 16 force sensors built into the grasping object and a structural deformation measurement device using camera images were used to analyze the correspondence between force and structural deformation on an actual FRSG. In the experiment, we analyzed the influence of the crossbeam arrangement on the grasping force and the grasping conditions of the square (0°) and rectangular (45°) shapes, and state that an ideal grasp in a square-shaped (45°) grasp is possible if each crossbeam in the FRSG is arranged at a different angle.

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Section: Introductionmentioning

confidence: 99%