Soft-Jig：組立部品の固定と姿勢推定を同時に行う柔軟センシング治具
Soft-Jig: A Flexible Sensing Jig for Simultaneously Fixing and Estimating Orientation of Assembly Parts
透明ビーズと屈折率調整オイルを封入した柔軟膜で部品を固定し、膜の変形をカメラで撮影して部品の姿勢を推定する治具を開発した。直径50mm以上の円筒物体でRMSE 3度未満の姿勢推定を実現した。
著者: Tatsuya Sakuma, Takuya Kiyokawa, Jun Takamatsu, Takahiro Wada, Tsukasa Ogasawara
分類: cs.RO
原文アブストラクト
For assembly tasks, it is essential to firmly fix target parts and to accurately estimate their poses. Several rigid jigs for individual parts are frequently used in assembly factories to achieve precise and time-efficient product assembly. However, providing customized jigs is time-consuming. In this study, to address the lack of versatility in the shapes the jigs can be used for, we developed a flexible jig with a soft membrane including transparent beads and oil with a tuned refractive index. The bead-based jamming transition was accomplished by discharging only oil enabling a part to be firmly fixed. Because the two cameras under the jig are able to capture membrane shape changes, we proposed a sensing method to estimate the orientation of the part based on the behaviors of markers created on the jig's inner surface. Through estimation experiments, the proposed system could estimate the orientation of a cylindrical object with a diameter larger than 50 mm and an RMSE of less than 3 degrees.
