Peristaltic locomotion with antagonistic actuators in soft robotics

This paper presents a soft robotic platform that exhibits peristaltic locomotion. The design principle is based on the unique antagonistic arrangement of radial/circular and longitudinal muscle groups of Oligochaeta. Sequential antagonistic motion is achieved in a flexible braided mesh-tube structure with NiTi coil actuators. A numerical model for the mesh structure describes how peristaltic motion induces robust locomotion and details the deformation by the contraction of NiTi actuators. Several peristaltic locomotion modes are modeled, tested, and compared on the basis of locomotion speed. The entire mechanical structure is made of flexible mesh materials and can withstand significant external impacts during locomotion. This approach can enable a completely soft robotic platform by employing a flexible control unit and energy sources.

[1]  Taro Nakamura,et al.  Development of peristaltic crawling robot using magnetic fluid on the basis of locomotion mechanism of earthworm , 2002, SPIE Micro + Nano Materials, Devices, and Applications.

[2]  G. Chapman.  Of the Movement of Worms , 1950 .

[3]  Quillin,et al.  Kinematic scaling of locomotion by hydrostatic animals: ontogeny of peristaltic crawling by the earthworm lumbricus terrestris , 1999, The Journal of experimental biology.

[4]  G. Newell,et al.  The Role of the Coelomic Fluid in the Movements of Earthworms , 1950 .

[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]  Robert J. Wood,et al.  Micro artificial muscle fiber using NiTi spring for soft robotics , 2009, 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems.

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

[8]  Elizabeth V. Mangan,et al.  Development of a peristaltic endoscope , 2002, Proceedings 2002 IEEE International Conference on Robotics and Automation (Cat. No.02CH37292).