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Control of the CEDRA Brachiation Robot Using Combination of Controlled Lagrangians Method and Particle Swarm Optimization Algorithm

  • Shabnam Tashakori
  • Gholamreza Vossoughi
  • Ehsan Azadi Yazdi
Research paper
  • 12 Downloads

Abstract

This paper studies the control of a brachiating robot imitating the locomotion of a long armed ape. The robot has two revolute joints, but only one of them is actuated. In this paper, after deriving dynamic model of the robot, the Controlled Lagrangians (CL) method is used to design a controller for point to point locomotion. The CL method involves satisfying a number of equations called matching conditions. The matching conditions are derived using the extended λ-method in the form of a set of partial differential equations (PDEs). Solving the PDEs, a class of controllers is found that satisfies the matching conditions. The fittest controller in the class of controllers is then chosen by particle swarm optimization algorithm. Performance of the developed controller is investigated by numerical simulations. Finally, experiments are performed to validate theoretical results.

Keywords

Brachiation robot Underactuated system Controlled Lagrangians method PSO algorithm 

Notes

Acknowledgements

The authors would like to thank Mr. Iman Shirdareh for his guidance and valuable suggestions in setup of the experiment. The authors would also like to thank M.H. Lavasani and M. Norouzi who originally designed and built the experimental setup used in this paper.

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Copyright information

© Shiraz University 2018

Authors and Affiliations

  • Shabnam Tashakori
    • 1
  • Gholamreza Vossoughi
    • 1
  • Ehsan Azadi Yazdi
    • 2
  1. 1.Center of Excellence in Design, Robotics and Automation (CEDRA), School of Mechanical EngineeringSharif University of TechnologyTehranIran
  2. 2.School of Mechanical EngineeringShiraz UniversityShirazIran

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