Dynamic bilateral teleoperation of the cart-pole: A study toward the synchronization of human operator and legged robot

Joao Ramos, Sangbae Kim

Research output: Contribution to journalArticle

Abstract

This letter presents the experimental evaluation of a bilateral feedback law for the teleoperation of an underactuated dynamic system: The Cart-Pole. This physical system illustrates another simple model, the Linear Inverted Pendulum (LIP); a popular template for legged robot control and, in this letter, the mapping channel between the operator and robot. We develop a scaling strategy based on geometric and kinematic similarity in order to generate dynamically feasible trajectories for the LIP with a natural frequency different than the human's. Moreover, by modifying the classic equations for the Cart-Pole, we show how it can competently represent the proposed template quantitatively and visually. Experiments where a human operator dynamically controls slave systems with slower or faster natural frequencies illustrate the efficacy of the proposed method. This study is a step toward building a human-machine interface that dynamically synchronize operator and legged robot in order to eventually achieve complex motor behaviors.

Original languageEnglish (US)
Pages (from-to)3293-3299
Number of pages7
JournalIEEE Robotics and Automation Letters
Volume3
Issue number4
DOIs
StatePublished - Oct 2018
Externally publishedYes

Keywords

  • haptics and haptic interfaces
  • human factors and human-in-the-loop
  • Humanoid and bipedal locomotion
  • natural machine motion
  • telerobotics and teleoperation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Human-Computer Interaction
  • Biomedical Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Artificial Intelligence
  • Computer Science Applications
  • Computer Vision and Pattern Recognition

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