Navigating Dynamically Unknown Environments Leveraging past Experience

Sterling Mcleod1, Jing Xiao2

  • 1University of North Carolina at Charlotte
  • 2WPI

Details

10:45 - 12:00 | Mon 20 May | Room 220 POD 01 | MoA1-01.5

Session: Robot Learning I - 1.1.01

Abstract

To enable autonomous robot navigation among unknown dynamic obstacles, a real-time adaptive motion planner (RAMP) plans the robot motion online based on sensing the environment as the robot moves with sensors mounted on the robot. However, the sensed environmental data from the robot’s local view is usually incomplete due to occlusions from obstacles and limited sensing range. This paper incorporates learning about the environment into the RAMP framework by leveraging the Hilbert Maps framework to generate a probabilistic model of occupancy of the unknown dynamic environment based on past observations. Utilizing this probabilistic model enables RAMP to reason about trajectory fitness when sensing information is partial and incomplete. This allows the RAMP robot to take advantage of what it has experienced from being in the dynamic environment before to inform its subsequent executions even though the dynamic environment changes in unknown ways. The effectiveness of incorporating such learned probabilistic data into RAMP is shown in both simulation and real experiments.