Fractional-order impedance control for a wheel-legged robot

Yinghui Chen, Jiangbo Zhao, Junzheng Wang, Duoyang Li

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

10 Citations (Scopus)

Abstract

To make robots walk smoothly and stably, it is necessary to solve ground impacts during dynamic walking. Compliance motion control can help to reduce the impacts and improve the robot's adaptability to complex terrain. Impedance control is a useful framework to provide robot's leg compliance. The conventional impedance control employs second-order mass-damping-spring system as a force disturbance controller. In this paper, position-based impedance control is applied to legged locomotion of the wheel-legged robot and a novel impedance controller with fractional order form is put forward to increase the system degrees of freedom for adjustment. The simulation tests of electric cylinder actuator and leg systems are carried out to demonstrate the effectiveness of the proposed algorithm.

Original languageEnglish
Title of host publicationProceedings of the 29th Chinese Control and Decision Conference, CCDC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages7845-7850
Number of pages6
ISBN (Electronic)9781509046560
DOIs
Publication statusPublished - 12 Jul 2017
Event29th Chinese Control and Decision Conference, CCDC 2017 - Chongqing, China
Duration: 28 May 201730 May 2017

Publication series

NameProceedings of the 29th Chinese Control and Decision Conference, CCDC 2017

Conference

Conference29th Chinese Control and Decision Conference, CCDC 2017
Country/TerritoryChina
CityChongqing
Period28/05/1730/05/17

Keywords

  • Fractional-order
  • Impedance control
  • Legged locomotion
  • Wheel-legged robot

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