Development of a Shoulder Joint for Humanoid Robotics Application

Zhenis Otarbay, Sharafatdin Yessirkepov, Timur Ishuov, Michele Folgheraiter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper we present the design and the kinematic model of a low-inertia, high-stiffness, tendon-driven shoulder joint for humanoid robotics application. The current system includes three limbs connected in a parallel architecture with 2 DOFs of mobility that allow rotations about the pitch and roll axes. In addition a third DOF can be easily included to implement the yaw rotation. Motion is possible thanks to three tendons displaced at 120 deg one from another and moved by pulleys connected to motors integrated in the base of the joint. The forces applied by the three tendons to the moving platform are measured with precise load cells sensors integrated in the joint structure. A customized motherboard was developed to allow integrating the micro-controller unit, the motor drivers and the instrumentation amplifiers. The forward kinematic model of a single limb of the parallel shoulder joint was obtained using screw theory and the inverse kinematics calculated from the orientation matrix. Preliminary tests of the joint were conducted using a customized graphical user interface that facilitate monitoring and controlling the actuators' status and all the system variables.

Original languageEnglish
Title of host publication2021 20th International Conference on Advanced Robotics, ICAR 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages771-776
Number of pages6
ISBN (Electronic)9781665436847
DOIs
Publication statusPublished - 2021
Event20th International Conference on Advanced Robotics, ICAR 2021 - Ljubljana, Slovenia
Duration: Dec 6 2021Dec 10 2021

Publication series

Name2021 20th International Conference on Advanced Robotics, ICAR 2021

Conference

Conference20th International Conference on Advanced Robotics, ICAR 2021
Country/TerritorySlovenia
CityLjubljana
Period12/6/2112/10/21

Keywords

  • Humanoid Robotics
  • Parallel Manipulator
  • Shoulder Joint
  • Spherical Joint
  • Tendon Actuated Mechanism

ASJC Scopus subject areas

  • Artificial Intelligence
  • Human-Computer Interaction
  • Software

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