Design and modeling of a new biomimetic earthworm robot for endoscopy actuated by SMA wires

Shape Memory Alloy (SMA) wires are widely employed in robotics, as actuators of prosthetic limbs and medical equipment. Due to advantages such as reducing the size in the application, high power-to-weight ratio and elimination of complex transmission systems and compatibility with the human body these materials are used as actuators in different types of medical robots. In this paper, a new mechanism is designed and modeled for a biomimetic earthworm robot for endoscopy with two SMA wires as actuators. The dynamic model of system has been simulated under different electrical as an input. The accuracy of robot response to achieve the preferred position is examined and compared with other results.

[1]  Sungho Jo,et al.  Design and control of thermal SMA based small crawling robot mimicking C. elegans , 2010, 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[2]  MIZhi－nan,et al.  Study on Moving Principle of Colonoscopic Robot , 2001 .

[3]  W. Huang,et al.  Stimulus-responsive shape memory materials: A review , 2012 .

[4]  Paolo Dario,et al.  A SMA actuated artificial earthworm , 2004, IEEE International Conference on Robotics and Automation, 2004. Proceedings. ICRA '04. 2004.

[5]  Sukho Park,et al.  An earthworm-like locomotive mechanism for capsule endoscopes , 2005, 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[6]  Alireza Khodayari,et al.  Design a new model for artificial finger by using SMA actuators , 2010, 2010 IEEE International Conference on Robotics and Biomimetics.

[7]  Hashem Ashrafiuon,et al.  Nonlinear Control of a Shape Memory Alloy Actuated Manipulator , 2002 .

[8]  Jérôme Szewczyk,et al.  A practical approach to the design and control of active endoscopes , 2010 .

[9]  G. Yan,et al.  A Wireless Robotic Endoscope for Gastrointestine , 2008, IEEE Transactions on Robotics.

[10]  Joël Abadie,et al.  Modeling of a new SMA micro-actuator for active endoscopy applications , 2009 .

[11]  Paolo Dario,et al.  Design, Fabrication and Performances of a Biomimetic Robotic Earthworm , 2004, 2004 IEEE International Conference on Robotics and Biomimetics.