The null-space based behavioral control for non-holonomic mobile robots with actuators velocity saturation

Authors:
F. Arrichiello;S. Chiaverini;P. Pedone;A. A. Zizzari;G. Indiveri
Affiliations:
Dipartimento di Automazione, Elettromagnetismo, Ingegneria dell'Informazione e Matematica Industriale, Università degli Studi di Cassino, Cassino, FR, Italy;Dipartimento di Automazione, Elettromagnetismo, Ingegneria dell'Informazione e Matematica Industriale, Università degli Studi di Cassino, Cassino, FR, Italy;Dipartimento Ingegneria Innovazione, Università del Salento, Lecce, Italy;Dipartimento Ingegneria Innovazione, Università del Salento, Lecce, Italy;Dipartimento Ingegneria Innovazione, Università del Salento, Lecce, Italy
Venue:
ICRA'09 Proceedings of the 2009 IEEE international conference on Robotics and Automation
Year:
2009

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Abstract

This paper presents the application of the Null-Space based Behavioral (NSB) approach to the motion control of a non-holonomic mobile robot with velocity saturated actuators. In particular, the proposed solution aims at managing actuator velocity saturations by dynamically scaling task velocity commands so that the hierarchy of task priorities is preserved in spite of actuator velocity saturations. The approach is tested on a specific case study where the NSB approach elaborates the motion directives for a mobile robot that has to reach a target while avoiding a punctual obstacle. The approach is validated by numerical simulations and by experimental results with a non-holonomic mobile robot.