Developing a dynamic obstacle avoidance system for autonomous mobile robots using Bayesian optimization and object tracking: Implementation and testing
Journal
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Date Issued
2023-01-01
Author(s)
Wu, Chung Hsin
Abstract
This study addresses the challenges faced by autonomous mobile robots in dynamic environments where moving obstacles such as people, cars, and other mobile robots are prevalent. Current motion planning methods for mobile robots focus on stationary obstacles or equivalent static ones at each control moment, resulting in collisions with moving objects or the need for longer distances to avoid them. To address this issue, we propose a system that incorporates dynamic information about moving obstacles into the motion planning decision-making process. We developed an object tracking technique using 2D LiDARs to gather this information and optimized the relevant parameters using Bayesian optimization. The dynamic information of moving obstacles is saved in a costmap representation at each instant, allowing the robot to yield or ignore confronting obstacles based on the prediction of who shall pass first. Simulation and real-world testing demonstrate that our approach saves paths for mobile robots in dynamic environments and prevents them from colliding with dynamic obstacles, improving the practicality of mobile robots working alongside moving humans.
Subjects
Autonomous mobile robot | Bayesian optimization | collision avoidance | dynamic window approach | LiDAR | motion planning | object tracking
Type
journal article