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The multilayer control scheme: a strategy to guide n-robots formations with obstacle avoidance

The multilayer control scheme: a strategy to guide n-robots formations with obstacle avoidance

Samenvatting

A multilayer scheme is here proposed to implement coordinated control of a group of mobile robots. Specifically, a trajectory tracking controller is proposed to coordinately guide a platoon of robots, with an obstacle deviation subsystem based on virtual forces and mechanical impedance implemented in each robot. Such a controller is firstly designed for groups of three robots and then generalized to larger groups ($$n>3$$n>3 robots), by proposing a modular structure based on the concatenation of triangular modules, composing a polygon of $$n$$n sides (one of the designed controllers is adopted to guide each module). The stability of the closed-loop control system is also proven for each individual control system, based on the theory of Lyapunov, taking into account the saturation of the control signals, adopted to prevent the saturation of the robot actuators. Based on such a proof, a conjecture that the whole control system is stable is presented, which is supported by several simulated and experimental results, some of which are presented, thus validating the proposed control structure.

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OrganisatieHanzehogeschool Groningen
LectoraatSensors and Smart Systems
Gepubliceerd inJournal of Control, Automation and Electrical Systems Springer US, Vol. 26, Uitgave: 3, Pagina's: 201-214
Jaar2015
TypeArtikel
ISSN2195-3899
DOI10.1007/s40313-015-0170-x
TaalEngels

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