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Computer Science > Robotics

arXiv:2212.11427 (cs)
[Submitted on 22 Dec 2022]

Title:A Non-linear MPC Local Planner for Tractor-Trailer Vehicles in Forward and Backward Maneuvering

Authors:Behnam Moradi, Mehran Mehrandezh
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Abstract:Designing a local planner to control tractor-trailer vehicles in forward and backward maneuvering is a challenging control problem in the research community of autonomous driving systems. Considering a critical situation in the stability of tractor-trailer systems, a practical and novel approach is presented to design a non-linear MPC(NMPC) local planner for tractor-trailer autonomous vehicles in both forward and backward maneuvering. The tractor velocity and steering angle are considered to be control variables. The proposed NMPC local planner is designed to handle jackknife situations, avoiding multiple static obstacles, and path following in both forward and backward maneuvering. The challenges mentioned above are converted into a constrained problem that can be handled simultaneously by the proposed NMPC local planner. The direct multiple shooting approach is used to convert the optimal control problem(OCP) into a non-linear programming problem(NLP) that IPOPT solvers can solve in CasADi. The controller performance is evaluated through different backup and forward maneuvering scenarios in the Gazebo simulation environment in real-time. It achieves asymptotic stability in avoiding static obstacles and accurate tracking performance while respecting path constraints. Finally, the proposed NMPC local planner is integrated with an open-source autonomous driving software stack called AutowareAi.
Comments: Under development. The software package will be shared with the research community
Subjects: Robotics (cs.RO); Systems and Control (eess.SY)
Cite as: arXiv:2212.11427 [cs.RO]
  (or arXiv:2212.11427v1 [cs.RO] for this version)
  https://doi.org/10.48550/arXiv.2212.11427

Submission history

From: Behnam Moradi [view email]
[v1] Thu, 22 Dec 2022 00:33:33 UTC (6,759 KB)
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