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Cited by 537

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Optimization‐based autonomous racing of 1:43 scale RC cars

Open access
Liniger, Alexander, Domahidi, Alexander, Morari, Manfred·2015·Optimal Control Applications and Methods

Abstract

Summary: This paper describes autonomous racing of RC race cars based on mathematical optimization. Using a dynamical model of the vehicle, control inputs are computed by receding horizon based controllers, where the objective is to maximize progress on the track subject to the requirement of staying on the track and avoiding opponents. Two different control formulations are presented. The first controller employs a two‐level structure, consisting of a path planner and a nonlinear model predictive controller (NMPC) for tracking. The second controller combines both tasks in one nonlinear optimization problem (NLP) following the ideas of contouring control. Linear time varying models obtained by linearization are used to build local approximations of the control NLPs in the form of convex quadratic programs (QPs) at each sampling time. The resulting QPs have a typical MPC structure and can be solved in the range of milliseconds by recent structure exploiting solvers, which is key to the real‐time feasibility of the overall control scheme. Obstacle avoidance is incorporated by means of a high‐level corridor planner based on dynamic programming, which generates convex constraints for the controllers according to the current position of opponents and the track layout. The control performance is investigated experimentally using 1:43 scale RC race cars, driven at speeds of more than 3 m/s and in operating regions with saturated rear tire forces (drifting). The algorithms run at 50 Hz sampling rate on embedded computing platforms, demonstrating the real‐time feasibility and high performance of optimization‐based approaches for autonomous racing. Copyright © 2014 John Wiley & Sons, Ltd.

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Crossref · 10.1002/oca.2123

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Metadata

Authors
Liniger, A., Domahidi, A., & Morari, M.
Venue
Optimal Control Applications and Methods
Publisher
Wiley
Published
2014-07-17
Volume
36
Issue
5
Pages
628-647
ISSN
  • 0143-2087 (ISSN-L)
  • 1099-1514
OpenAlex
W1578293866
Cited by
537
References
27
FWCI
16.34
Type
journal article
Language
en
Open access
green

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