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Formation tracker design of multiple mobile robots with wheel perturbations: adaptive output-feedback approach

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  • Sung Jin Yoo

Abstract

This paper presents a theoretical design approach for output-feedback formation tracking of multiple mobile robots under wheel perturbations. It is assumed that these perturbations are unknown and the linear and angular velocities of the robots are unmeasurable. First, adaptive state observers for estimating unmeasurable velocities of the robots are developed under the robots’ kinematics and dynamics including wheel perturbation effects. Then, we derive a virtual-structure-based formation tracker scheme according to the observer dynamic surface design procedure. The main difficulty of the output-feedback control design is to manage the coupling problems between unmeasurable velocities and unknown wheel perturbation effects. These problems are avoided by using the adaptive technique and the function approximation property based on fuzzy logic systems. From the Lyapunov stability analysis, it is shown that point tracking errors of each robot and synchronisation errors for the desired formation converge to an adjustable neighbourhood of the origin, while all signals in the controlled closed-loop system are semiglobally uniformly ultimately bounded.

Suggested Citation

  • Sung Jin Yoo, 2016. "Formation tracker design of multiple mobile robots with wheel perturbations: adaptive output-feedback approach," International Journal of Systems Science, Taylor & Francis Journals, vol. 47(15), pages 3619-3630, November.
    • Handle: RePEc:taf:tsysxx:v:47:y:2016:i:15:p:3619-3630
    DOI: 10.1080/00207721.2015.1107149
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