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Dynamic Manipulation of an Unknown Object Under Compliant Non-holonomic Constraints
Rodolfo Garcia-Rodriguez,Vicente Parra-Vega,Luis Pantoja-Garcia,Ernesto Olguin-Diaz 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.6
There are many robot control schemes where the end-effector is subject to holonomic or non-holonomic constraints. However, the literature has overlooked the problem of simultaneous holonomic and nonholonomic constraints. In particular, the case of constrained tangent force with a normal force to manipulate an object. In this paper, to study this problem, it is considered two 2D rigid robot fingers whose end-effectors are equipped with hemispherical deformable tips in contact with a rigid object. If the radius changes when force is exerted, we can notice a 1D-tangent constraint force and a 1D-normal compliant force arise simultaneously from the so-called compliant nonholonomic constraint. An energy reshaping controller is proposed to ensure simultaneously the convergence of the normal and tangential constraint forces assuming nonlinear viscoelastic damping. A representative simulation study shows the advantages of the constraints forces, in complex dexterity tasks, under the assumption that knowledge of the non-regular object is unknown.