Search Results for author: Johannes Betz

Found 15 papers, 7 papers with code

A Safe Reinforcement Learning driven Weights-varying Model Predictive Control for Autonomous Vehicle Motion Control

no code implementations4 Feb 2024 Baha Zarrouki, Marios Spanakakis, Johannes Betz

However, a single parameter set may not deliver the most optimal closed-loop control performance when the context of the MPC operating conditions changes during its operation, urging the need to adapt the cost function weights at runtime.

Bayesian Optimization Model Predictive Control +2

R$^2$NMPC: A Real-Time Reduced Robustified Nonlinear Model Predictive Control with Ellipsoidal Uncertainty Sets for Autonomous Vehicle Motion Control

no code implementations10 Nov 2023 Baha Zarrouki, João Nunes, Johannes Betz

In this paper, we present a novel Reduced Robustified NMPC (R$^2$NMPC) algorithm that has the same complexity as an equivalent nominal NMPC while enhancing it with robustified constraints based on the dynamics of ellipsoidal uncertainty sets.

Model Predictive Control

Adaptive Stochastic Nonlinear Model Predictive Control with Look-ahead Deep Reinforcement Learning for Autonomous Vehicle Motion Control

no code implementations7 Nov 2023 Baha Zarrouki, Chenyang Wang, Johannes Betz

In this paper, we present a Deep Reinforcement Learning (RL)-driven Adaptive Stochastic Nonlinear Model Predictive Control (SNMPC) to optimize uncertainty handling, constraints robustification, feasibility, and closed-loop performance.

Decision Making Model Predictive Control +1

A Stochastic Nonlinear Model Predictive Control with an Uncertainty Propagation Horizon for Autonomous Vehicle Motion Control

no code implementations28 Oct 2023 Baha Zarrouki, Chenyang Wang, Johannes Betz

Our SNMPC approach utilizes Polynomial Chaos Expansion (PCE) to propagate uncertainties and incorporates nonlinear hard constraints on state expectations and nonlinear probabilistic constraints.

Autonomous Vehicles Model Predictive Control

Game-theoretic Objective Space Planning

1 code implementation16 Sep 2022 Hongrui Zheng, Zhijun Zhuang, Johannes Betz, Rahul Mangharam

Generating competitive strategies and performing continuous motion planning simultaneously in an adversarial setting is a challenging problem.

Autonomous Vehicles counterfactual +2

Radar Voxel Fusion for 3D Object Detection

1 code implementation26 Jun 2021 Felix Nobis, Ehsan Shafiei, Phillip Karle, Johannes Betz, Markus Lienkamp

This paper develops a low-level sensor fusion network for 3D object detection, which fuses lidar, camera, and radar data.

3D Object Detection Object +2

An Open-Source Scenario Architect for Autonomous Vehicles

1 code implementation17 Jun 2020 Tim Stahl, Johannes Betz

The development of software components for autonomous driving functions should always include an extensive and rigorous evaluation.

Robotics Systems and Control Systems and Control

Multilayer Graph-Based Trajectory Planning for Race Vehicles in Dynamic Scenarios

1 code implementation18 May 2020 Tim Stahl, Alexander Wischnewski, Johannes Betz, Markus Lienkamp

Trajectory planning at high velocities and at the handling limits is a challenging task.

Robotics Systems and Control Systems and Control

Persistent Map Saving for Visual Localization for Autonomous Vehicles: An ORB-SLAM Extension

1 code implementation15 May 2020 Felix Nobis, Odysseas Papanikolaou, Johannes Betz, Markus Lienkamp

One fundamental building block of an autonomous vehicle is the ability to build a map of the environment and localize itself on such a map.

Autonomous Driving Simultaneous Localization and Mapping +1

Minimum Race-Time Planning-Strategy for an Autonomous Electric Racecar

1 code implementation14 May 2020 Thomas Herrmann, Francesco Passigato, Johannes Betz, Markus Lienkamp

Increasing attention to autonomous passenger vehicles has also attracted interest in an autonomous racing series.

Systems and Control Systems and Control

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