Real-time nonparametric reactive navigation of mobile robots in dynamic environments

Sungjoon Choi, Eunwoo Kim, Kyungjae Lee, Songhwai Oh

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

In this paper, we propose a nonparametric motion controller using Gaussian process regression for autonomous navigation in a dynamic environment. Particularly, we focus on its applicability to low-cost mobile robot platforms with low-performance processors. The proposed motion controller predicts future trajectories of pedestrians using the partially-observable egocentric view of a robot and controls a robot using both observed and predicted trajectories. Furthermore, a hierarchical motion controller is proposed by dividing the controller into multiple sub-controllers using a mixture-of-experts framework to further alleviate the computational cost. We also derive an efficient method to approximate the upper bound of the learning curve of Gaussian process regression, which can be used to determine the required number of training samples for the desired performance. The performance of the proposed method is extensively evaluated in simulations and validated experimentally using a Pioneer 3DX mobile robot with two Microsoft Kinect sensors. In particular, the proposed baseline and hierarchical motion controllers show over 65% and 51% improvements over a reactive planner and predictive vector field histogram, respectively, in terms of the collision rate.

Original languageEnglish
Pages (from-to)11-24
Number of pages14
JournalRobotics and Autonomous Systems
Volume91
DOIs
Publication statusPublished - 2017 May 1
Externally publishedYes

Keywords

  • And learning curve of Gaussian process regression
  • Autonomous navigation
  • Dynamic environments
  • Gaussian process regression

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mathematics(all)
  • Computer Science Applications

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