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Equations of motion of a ring-like robot with a flexible body and creeping-rolling motion

Nejad, A. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2009-12494
  3. Abstract:
  4. The robots that can move on rough terrains are very important especially in Rescue operation, exploration, etc. In this research, a mechanism is introduced for a ring-like robot with a flexible body. This robot is moved by arms which are placed radially and have Reciprocating motion in this direction. By controlling the contraction and the extension of the arms which contact lhe ground, the robot will be forced to move which is called rolling-creeping motion. The robot is stable in stationary state.; also the maximum angle which it can be stable is determined. Considering the speed of contracted arm is the input parameter, the speed of the extended arm for locomotion of the robot has been obtained from that. Not only the speed of mass center is accounted, but also the variation of the input parameter is computed for constant speed of the robot. So, dynamic analysis is illustrated by quasi-static stability assumption. Finally, the results of the motion simulation are shown to confirm equations
  5. Keywords:
  6. Flexibility body ; Dynamic analysis ; Kinematics ; Mechanical engineering ; Speed ; Constant speed ; Creeping motion ; Flexible bodies ; Input parameter ; Kinematics analysis ; Mass centers ; Motion simulations ; Quasi-static stability ; Reciprocating motion ; Rescue operations ; Robot arms ; Rolling motion ; Rough terrains ; Stationary state ; Equations of motion
  7. Source: ASME International Mechanical Engineering Congress and Exposition, Proceedings ; 2010 , pp. 191-197 ; ISBN: 9780791843833
  8. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1641675