Learning-Aided Warmstart of Model Predictive Control in Uncertain Fast-Changing Traffic

• URL: http://arxiv.org/abs/2310.02918v1
• Date: Wed, 4 Oct 2023 16:00:21 GMT
• Title: Learning-Aided Warmstart of Model Predictive Control in Uncertain Fast-Changing Traffic
• Authors: Mohamed-Khalil Bouzidi, Yue Yao, Daniel Goehring, Joerg Reichardt
• Abstract summary: We use a network based multimodal predictor to generate proposals for the autonomous vehicle trajectory. This approach enables us to identify multiple local minima and provide an improved initial guess. We validate our approach with Monte Carlo simulations distinct scenarios.
• Score: 2.0965639599405366
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Model Predictive Control lacks the ability to escape local minima in nonconvex problems. Furthermore, in fast-changing, uncertain environments, the conventional warmstart, using the optimal trajectory from the last timestep, often falls short of providing an adequately close initial guess for the current optimal trajectory. This can potentially result in convergence failures and safety issues. Therefore, this paper proposes a framework for learning-aided warmstarts of Model Predictive Control algorithms. Our method leverages a neural network based multimodal predictor to generate multiple trajectory proposals for the autonomous vehicle, which are further refined by a sampling-based technique. This combined approach enables us to identify multiple distinct local minima and provide an improved initial guess. We validate our approach with Monte Carlo simulations of traffic scenarios.

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