符毓
(2025-04-30 22:15):
#paper doi: arxiv.org/abs/2504.19193, 2025, Trajectory Planning with Model Predictive Control for Obstacle Avoidance Considering Prediction Uncertainty. 本文介绍了一种用于自主机器人的新型轨迹规划器,在机器人操作系统(ROS2) 和导航框架(Nav2)中融入动态避障功能来增强导航性能。该方法利用模型预测控制 (MPC),重点处理与动态障碍物运动预测相关的不确定性。与主要处理静态障碍物或对动态障碍物当前位置做出反应的现有Nav2轨迹规划器不同,该规划器预测未来障碍物的位置,从而确保机器人避开可能存在障碍物的区间
arXiv,
2025-04-27T11:00:19Z.
DOI: 10.48550/arXiv.2504.19193
Trajectory Planning with Model Predictive Control for Obstacle Avoidance Considering Prediction Uncertainty
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Abstract:
This paper introduces a novel trajectory planner for autonomous robots,specifically designed to enhance navigation by incorporating dynamic obstacleavoidance within the Robot Operating System 2 (ROS2) and Navigation 2 (Nav2)framework. The proposed method utilizes Model Predictive Control (MPC) with afocus on handling the uncertainties associated with the movement prediction ofdynamic obstacles. Unlike existing Nav2 trajectory planners which primarilydeal with static obstacles or react to the current position of dynamicobstacles, this planner predicts future obstacle positions using a stochasticVector Auto-Regressive Model (VAR). The obstacles' future positions arerepresented by probability distributions, and collision avoidance is achievedthrough constraints based on the Mahalanobis distance, ensuring the robotavoids regions where obstacles are likely to be. This approach considers therobot's kinodynamic constraints, enabling it to track a reference path whileadapting to real-time changes in the environment. The paper details theimplementation, including obstacle prediction, tracking, and the constructionof feasible sets for MPC. Simulation results in a Gazebo environmentdemonstrate the effectiveness of this method in scenarios where robots mustnavigate around each other, showing improved collision avoidance capabilities.
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