Underwater running on uneven terrain

In this work a punting gait model, describing a robot running underwater, is studied with respect to unknown variations of the ground and design parameters of the robot. The model, described through a dynamical system, is actuated with an open-loop control and exhibits self-stabilizing running, represented by the limit cycle of the system, on flat terrain. By introducing a simulated uneven terrain and by keeping the same open-loop control, it appears that the self-stable gait is not affected by disturbances until a certain threshold, when the robot falls to the ground. Moreover, the stability appears to be proportional to the density of the robot and inversely proportional to the drag coefficient of the body, thus suggesting some criteria for the design of underwater running robots.

[1]  C. Laschi,et al.  Octopus-inspired sensorimotor control of a multi-arm soft robot , 2012, 2012 IEEE International Conference on Mechatronics and Automation.

[2]  Luther R Palmer,et al.  Periodic spring–mass running over uneven terrain through feedforward control of landing conditions , 2014, Bioinspiration & biomimetics.

[3]  Cecilia Laschi,et al.  Bipedal Walking of an Octopus-Inspired Robot , 2014, Living Machines.

[4]  Tomoya Inoue,et al.  Flipper type crawler system for running on the irregular seafloor , 2010, OCEANS'10 IEEE SYDNEY.

[5]  Ronald S. Fearing,et al.  DASH: A dynamic 16g hexapedal robot , 2009, 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[6]  T R Consi,et al.  Amphibious robots as rapidly deployable near-shore observatories , 2010, OCEANS 2010 MTS/IEEE SEATTLE.

[7]  Marc H. Raibert,et al.  Legged Robots That Balance , 1986, IEEE Expert.

[8]  Paolo Dario,et al.  Realization of biped walking on soft ground with stabilization control based on gait analysis , 2012, 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[9]  C. A. Hui,et al.  Walking of the Shore Crab Pachygrapsus Crassipes in its Two Natural Environments , 1992 .

[10]  R. Blickhan.  The spring-mass model for running and hopping. , 1989, Journal of biomechanics.

[11]  Stephen Wood.  Modular Amphibious Research Crawler Characterization of the coastal environment using a portable remotely operated crawler , 2007 .

[12]  T. Hyakudome,et al.  A ROV "ABISMO" for the Inspection and Sampling in the Deepest Ocean and Its Operation Support System , 2008, OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean.

[13]  M Calisti,et al.  Bioinspired locomotion and grasping in water: the soft eight-arm OCTOPUS robot , 2015, Bioinspiration & biomimetics.

[14]  C. Waldmann,et al.  Traction properties of the wheels of an underwater crawler on different soils , 2007, OCEANS 2007.

[15]  Cecilia Laschi,et al.  A Locomotion Strategy for an Octopus-Bioinspired Robot , 2012, Living Machines.

[16]  Bong-Huan Jun,et al.  Mechanical design of six-legged walking robot, Little Crabster , 2012, 2012 Oceans - Yeosu.

[17]  R.D. Quinn,et al.  Confluence of Active and Passive Control Mechanisms Enabling Autonomy and Terrain Adaptability for Robots in Variable Environments , 2008, Advances in Electrical and Electronics Engineering - IAENG Special Edition of the World Congress on Engineering and Computer Science 2008.

[18]  Jong-Su Choi,et al.  Track velocity control of crawler type underwater mining robot through shallow-water test , 2012 .

[19]  M. M. Martínez,et al.  Running in the surf: hydrodynamics of the shore crab Grapsus tenuicrustatus. , 2001, The Journal of experimental biology.

[20]  Full,et al.  Underwater punting by an intertidal crab: a novel gait revealed by the kinematics of pedestrian locomotion in air versus water , 1998, The Journal of experimental biology.

[21]  William Harris,et al.  Hybrid robot crawler / flyer for use in underwater archaeology , 2013, 2013 OCEANS - San Diego.

[22]  R. McNeill Alexander,et al.  Principles of Animal Locomotion , 2002 .

[23]  C. Pond,et al.  The Role of the ‘Walking Legs’ in Aquatic and Terrestrial Locomotion of the Crayfish Austropotamobius Pallipes (Lereboullet) , 1975 .

[24]  H. Geyer.  Simple models of legged locomotion based on compliant limb behavior = Grundmodelle pedaler Lokomotion basierend auf nachgiebigem Beinverhalten , 2005 .

[25]  Jonathan W. Hurst,et al.  Impulse Control for Planar Spring-Mass Running , 2014, J. Intell. Robotic Syst..

[26]  Joseph Ayers,et al.  Biomimetic approaches to the control of underwater walking machines , 2007, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[27]  Jonathan E. Clark,et al.  iSprawl: Design and Tuning for High-speed Autonomous Open-loop Running , 2006, Int. J. Robotics Res..

[28]  Cecilia Laschi,et al.  PoseiDRONE: Design of a soft-bodied ROV with crawling, swimming and manipulation ability , 2013, 2013 OCEANS - San Diego.

[29]  K. Takagi,et al.  Dynamic Analysis of Motion of Crawler-Type Remotely Operated Vehicles , 2013, IEEE Journal of Oceanic Engineering.