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Título del libro: Proceedings - 2014 International Conference On Control, Decision And Information Technologies, Codit 2014
Título del capítulo: A simple application of GPI observers to the force control of robots

Autores UNAM:
MARCO ANTONIO ARTEAGA PEREZ; IVAN ALEJANDRO GUTIERREZ GILES;
Autores externos:

Idioma:
Inglés
Año de publicación:
2014
Palabras clave:

Force control; Linear control systems; Machine design; Manipulators; Robot applications; Robots; Two term control systems; Experimental analysis; Linear controllers; Linear feedback controllers; Proportional integral; Robot force control; Robust output feedbacks; Time-varying perturbations; Trajectory tracking; Controllers


Resumen:

In this work the design of a linear observer-linear controller robust output feedback scheme is introduced for simultaneous trajectory tracking of position and force in fully actuated robot manipulators. The unknown state-dependent additive nonlinearity influencing the input-output description is modeled as an absolutely bounded 'time-varying perturbation'. Generalized Proportional Integral (GPI) observers are shown to naturally estimate the unknown perturbation and a certain number of its time derivatives in an arbitrarily close manner. This information is used to advantage on the linear feedback controller design via a simple cancelation effort. To the best of the authors' knowledge GPI observers have not been used before for robot force control. A experimental analysis/comparison is presented to show the good performance of the proposed approach. © 2014 IEEE.


Entidades citadas de la UNAM: