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Simulation study of a remote wireless path tracking control with delay estimation for an autonomous guided vehicle

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Abstract

Industrial applications involving mobile systems can benefit from the use of wireless technology. However, wireless communication has not been widely accepted on the factory floor due to its difficulty in achieving the timely and reliable transmission of messages over error-prone wireless channels. This paper presents an autonomous guided vehicle (AGV) path tracking wireless control system where an accurate delay estimation scheme is shown to be the key for successful operation. The control architecture consists on an AGV connected through a wireless network to a controller. To mitigate the negative effects that varying time delays in data transfer have in the networked control loop, the controller performs two tasks at each loop operation. First, it uses a Kalman filter to produce an optimal delay estimate considering a simple stochastic model of the wireless delay dynamics. Second, each delay estimate is employed to infer the real AGV position which permits to compute the appropriate control commands. Results show that the proposed technique provides more efficient and effective operation for path tracking control compared to similar previously proposed solutions.

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Authors and Affiliations

  1. Automatic Control Department, Technical University of Catalonia, Pau Gargallo 5, 08028, Barcelona, Spain

    Camilo Lozoya, Pau Martí, Manel Velasco, Josep M. Fuertes & Enric Xavier Martín

Authors
  1. Camilo Lozoya
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  2. Pau Martí
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  3. Manel Velasco
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  4. Josep M. Fuertes
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  5. Enric Xavier Martín
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Corresponding author

Correspondence to Pau Martí.

Additional information

This work was partially supported by the ArtistDesing Network of Excellence on Design for Embedded Systems, IST-2008-214373, and by the Spanish project C3DE, CICYT DPI2007-61527.

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Lozoya, C., Martí, P., Velasco, M. et al. Simulation study of a remote wireless path tracking control with delay estimation for an autonomous guided vehicle. Int J Adv Manuf Technol 52, 751–761 (2011). https://doi.org/10.1007/s00170-010-2736-x

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  • DOI: https://doi.org/10.1007/s00170-010-2736-x

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