Exploiting the equations of motion for biped robot control with enhanced stability

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Abstract

The scope of the present paper is the derivation of the equations of motion for humanoid robots, in particular legged robots. The derivation is performed in a modular and structured manner and it is shown how these equations can be exploited for the control of biped robots. The used methods allow to easily adopt the kinematic structure of single limbs and to reuse results obtained for limbs with similar kinematic structure but different inertial parameters such as in case the left leg is just a mirrored version of the right one. After finding a recursive formulation to calculate the equations of motion we perform various state transformations and apply some model simplifications to obtain expressions that can be used to effectively solve control problems. Two applications, compensating for the overall angular momentum and calculation of feed-forward torques, are shown. In both applications we can exploit the recursive calculation of the equations of motion used during the subsystem synthesis giving rise to real-time algorithms that can be used on a physical humanoid robot system.
Original languageEnglish
Title of host publicationMULTIBODY DYNAMICS 2015, ECCOMAS Thematic Conference
EditorsJosep M. Font-Llagunes
Pages1434-1445
Number of pages12
ISBN (Electronic)9788494424403
Publication statusPublished - Jun 2015

Fields of science

  • 203015 Mechatronics
  • 203022 Technical mechanics
  • 202 Electrical Engineering, Electronics, Information Engineering
  • 202035 Robotics
  • 203013 Mechanical engineering

JKU Focus areas

  • Mechatronics and Information Processing

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