Stability of Two-Dimensional Blind Grasping under the Gravity Effect and Rolling Constraints

Author:

Arimoto S.,Yoshida M.,Bae J.-H.

Abstract

SUMMARYThis paper aims to show a sensory-motor coordination control scheme that realizes stable pinching of rigid objects with parallel or nonparallel flat surfaces movable in 2-dimensional vertical plane by a pair of robot fingers with hemispherical ends. The proposed control signal is composed of gravity compensation for fingers, damping shaping, exertion of forces to the object from opposite directions, generation of moments for balancing of rotational moments, and regressors for estimating unknown steady-state terms, all of which neither need the knowledge of object parameters nor use any object sensing data. In other words, stable grasping can be realized by using only finger-joint sensing in a blind manner without using force sensors or tactile sensing. Stability of pinching motion with convergence to the state of force/torque balance is shown through computer simulations and is also proved theoretically.

Publisher

Cambridge University Press (CUP)

Subject

Computer Science Applications,General Mathematics,Software,Control and Systems Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Robust object manipulation for tactile-based blind grasping;Control Engineering Practice;2019-11

2. Modeling and Control of Three-Dimensional Grasping by a Pair of Robot Fingers;SICE Journal of Control, Measurement, and System Integration;2008-01-01

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