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Design and experiment evaluation of a magneto-rheological damper for the legged robot

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a Magneto-Rheological (MR)-based damper that can avoid high impulsive forces caused by the legged robot while walking and jumping. Traditional high stiffness system can ensure precise positioning of actuators, and accomplish repetitive tasks efficiently. Nevertheless, it has great hardness and is easy to cause impact, which seriously affects the stability of robot while walking and jumping. The previous approach to solve this problem adopt variable impedance actuators. They can absorb impact shock and store energy but typically have a very low intrinsic damping for efficient energy storage and retrieval. This paper introduces a novel MR-based damper that can change intrinsic damping by adjusting the current in the coil. The models of this damper are established and several experiments are carried out to test its performance. The results show that it can change the internal Magneto-Rheological Fluid (MRF) to absorb impact effectively.

Original languageEnglish
Title of host publication2018 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages687-692
Number of pages6
ISBN (Electronic)9781538668689
DOIs
StatePublished - 2 Jul 2018
Event2018 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2018 - Kandima, Maldives
Duration: 1 Aug 20185 Aug 2018

Publication series

Name2018 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2018

Conference

Conference2018 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2018
Country/TerritoryMaldives
CityKandima
Period1/08/185/08/18

Keywords

  • Impact resistance
  • Magneto-Rheological damper
  • legged robot

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