Learning Inverse Kinodynamics for Accurate High-Speed Off-Road Navigation on Unstructured Terrain

This letter presents a learning-based approach to consider the effect of unobservable world states in kinodynamic motion planning in order to enable accurate high-speed off-road navigation on unstructured terrain. Existing kinodynamic motion planners either operate in structured and homogeneous envi...

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Bibliographic Details
Published in:IEEE robotics and automation letters Vol. 6; no. 3; pp. 6054 - 6060
Main Authors: Xiao, Xuesu, Biswas, Joydeep, Stone, Peter
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.07.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Autonomous vehicle navigation
High speed
Indoor environments
Learning
machine learning for robot control
motion and path planning
Motion control
Motion planning
Navigation
Planning
Robots
Semantics
Sensors
Terrain
Training
ISSN:2377-3766, 2377-3766
Online Access:Get full text
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Summary:This letter presents a learning-based approach to consider the effect of unobservable world states in kinodynamic motion planning in order to enable accurate high-speed off-road navigation on unstructured terrain. Existing kinodynamic motion planners either operate in structured and homogeneous environments and thus do not need to explicitly account for terrain-vehicle interaction, or assume a set of discrete terrain classes. However, when operating on unstructured terrain, especially at high speeds, even small variations in the environment will be magnified and cause inaccurate plan execution. In this letter, to capture the complex kinodynamic model and mathematically unknown world state, we learn a kinodynamic planner in a data-driven manner with onboard inertial observations. Our approach is tested on a physical robot in different indoor and outdoor environments, enables fast and accurate off-road navigation, and outperforms environment-independent alternatives, demonstrating 52.4% to 86.9% improvement in terms of plan execution success rate while traveling at high speeds.
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ISSN:2377-3766
2377-3766
DOI:10.1109/LRA.2021.3090023