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Automatika : journal for control, measurement, electronics, computing and communications, Vol.56 No.4 February 2016. -

This paper presents a new interaction control structure that generates a family of explicit force regulators for robot manipulators. The proposed structure includes a term of a class of proportional-type functions in terms of force error; the force error is defined as the difference between a desired force and the actual force measured with a force sensor located at the end-effector. Also, the structure includes a generalized active velocity damping term in order to have a control of the energy dissipation, and a term used to compensate the gravity forces of the links. The stability analysis is performed in Lyapunov sense. An experimental comparison of two new explicit force regulators and the linear proportional structure, on a three degree-of-freedom, direct-drive robot, is presented. Also, proofs of the most important properties of the Cartesian dynamic model, are presented.

Interaction control; Explicit force control; Direct-drive robot; Lyapunov stability; Cartesian robot control

Autor: César Alejandro Chávez-Olivares - orcid.org-0000-0002-9576-1667 ; Departamento de Ingeniería de Metal-Mecánica, Instituto Tec

Fuente: http://hrcak.srce.hr/


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