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Closed-Loop Push Recovery for an Inexpensive Humanoid Robot

  • Amirhossein Hosseinmemar
  • Jacky Baltes
  • John Anderson
  • Meng Cheng Lau
  • Chi Fung Lun
  • Ziang Wang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10868)

Abstract

Active balancing in autonomous humanoid robots is a challenging task due to the complexity of combining a walking gait with dynamic balancing, vision and high-level behaviors. Humans not only walk successfully over even and uneven terrain, but can recover from the interaction of external forces such as impacts with obstacles and active pushes. While push recovery has been demonstrated successfully in expensive robots, it is more challenging with robots that are inexpensive, with limited power in actuators and less accurate sensing. This work describes a closed-loop control method that uses an accelerometer and gyroscope to allow an inexpensive humanoid robot to actively balance while walking and recover from pushes. An experiment is performed to test three hand-tuned closed-loop control configurations; using only a the gyroscope, only the accelerometer, and a combination of both sensors to recover from pushes. Experimental results show that the combination of gyroscope and accelerometer outperforms the other methods with 100% recovery from a light push and 70% recovery from a strong push.

Keywords

Push recovery Humanoid robot Autonomous active balancing Centroidal moment pivot 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Amirhossein Hosseinmemar
    • 1
  • Jacky Baltes
    • 2
  • John Anderson
    • 1
  • Meng Cheng Lau
    • 1
  • Chi Fung Lun
    • 1
  • Ziang Wang
    • 1
  1. 1.Autonomous Agents Laboratory, Department of Computer ScienceUniversity of ManitobaWinnipegCanada
  2. 2.Department of Electrical EngineeringNational Taiwan Normal UniversityTaipeiTaiwan

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