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Optimization Design for Connection Relation of Tractor-Trailer Mobile Robot with Variable Structure

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4 Author(s)
Jing Yuan ; Coll. of Inf. Tech. Sci., Nankai Univ., Tianjin ; Yalou Huang ; Fengchi Sun ; Yewei Kang

Path planned for tractor-trailer mobile robot (TTMR) does not seem to be easily adapted to the case when the number of the trailers increases, thus the repetitive path planning has to be introduced. For this problem, this paper investigates the connection relation of TTMR with variable structure, i.e. the number of the trailers is variable, and deals with the optimization design for it to avoid the repetitive path planning when the number of the trailers increases. After analyzing the motion trajectories of TTMR, we establish the quantitative relationship for the motion characteristics between the transient course and the steady state. Based on which, a new design method to optimize the connection relation for variable-structure TTMR is proposed. In our scheme, the length of each connecting rod between two adjacent bodies is adjusted properly such that the transient deviations of the trailers from the path followed by the tractor will be less than the steady ones. In such a way, the path planned for TTMR can also be appropriate for the case when the number of the trailers varies. The simulations and experiments show the validity of our method

Published in:

Intelligent Robots and Systems, 2006 IEEE/RSJ International Conference on

Date of Conference:

9-15 Oct. 2006

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