CENTER OF MASS-BASED ADMITTANCE CONTROL FOR MULTI-LEGGED ROBOT WALKING ON THE BOTTOM OF OCEAN
DOI:
https://doi.org/10.11113/jt.v74.4802Keywords:
Buoyance factor, force restoration, center of mass, admittance control, seabed locomotionAbstract
This paper presents a proposed adaptive admittance control that is derived based on Center of Mass (CoM) of the hexapod robot designed for walking on the bottom of water or seabed. The study has been carried out by modeling the buoyancy force following the restoration force to achieve the drowning level according to the Archimedes’ principle. The restoration force needs to be positive in order to ensure robot locomotion is not affected by buoyancy factor. As a solution to regulate this force, admittance control has been derived based on the total force of foot placement to determine CoM of the robot while walking. This admittance control is designed according to a model of a real-time based 4-degree of freedom (DoF) leg configuration of a hexapod robot that able to perform hexapod-to-quadruped transformation. The analysis focuses on the robot walking in both configuration modes; hexapod and quadruped; with both tripod and traverse-trot walking pattern respectively. The verification is done on the vertical foot motion of the leg and the body mass coordination movement for each walking simulation. The results show that the proposed admittance control is able to regulate the force restoration factor by making vertical force on each foot sufficiently large (sufficient foot placement) compared to the buoyancy force of the ocean, thus performing stable locomotion for both hexapod and quadruped mode.
References
Bong-Huan, J., Hyungwon, S., Jin-Yeong, P., Banghyun, K. and Pan-Mook, L. 2011. A New Concept and Technologies of Multi-Legged Underwater Robot for High Tidal Current Environment. Underwater Technology (UT), 2011 IEEE Symposium on and 2011 Workshop on Scientific Use of Submarine Cables and Related Technologies (SSC). 1-5.
Aponick, T. and Bernstein, C. 2003. Countermine Operations in Very Shallow Water and Surf Zone: The Role of Bottom Crawlers. In OCEAN 2003. San Diego, CA, USA. 1931-1940.
Boxerbaum, A. S., Werk, P., Quinn, R. D. and Vaidyanathan, R. 2005. Design of an Autonomous Amphibhious Robot for Surf Zone Operation: Part I Mechanical Design for Multi-Mode Mobility. International Conference on Advanced Intelligent Mechatronics. Monterey, California, USA. 1459-1464.
Giguere, P., Dudek, G., Prahacs, C., Plamondon, N. and Turgeon, K. 2009. Unsupervised Learning of Terrain Appearance for Automated Coral Reef Exploration. in Conference on Computer and Robot Vision, 2009. CRV '09. Canadian ed. Montreal, QC, Canada. 268-275.
Akizono, J., Iwasaki, M., Nemoto, T. and Asakura, A. 1990. Field Test of Aquatic Walking Robot for Underwater Inspection. Procceeding of 7th International Symposium on Automation and Robotics in Construction (ISARC), Bristol, United Kingdom.
Akizono, J., Toshinari, T., Katsuei, N., Takashi, T. and Mineo, I. 1997. Seabottom Roughness Measurement by Aquatic Walking Robot. MTS/IEEE Conference OCEANS '97 World Trade and Convention Centre. Halifax, Nova Scotia, Canada. 1395-1398.
Jun B.-H., Shim, H., Park, J. H., Kim, B. and Lee, P.-M. 2011. A New Concept and Technologies of Multi-Legged Underwater Robot for High Tidal Current Environment. 2011 IEEE Symposium on Underwater Technology (UT) and 2011 Workshop on Scientific Use of Submarine Cables and Related Technologies (SSC). KORDI, Daejeon, South Korea. 1-5.
Jun B.-H., Shim, H. and Lee, P.-M. 2011. Approximated Generalized Torques by the Hydrodynamic Forces Acting on Legs of an Underwater Walking Robot. International Journal of Ocean System Engineering. 1: 222-229
Lapierre, L., Fraisse, P. and Dauchez, P. 2003. Position/Force Control of an Underwater Mobile Manipulator. Journal of Robotic Systems. 20: 707-722.
Ott, C. 2008. Cartesian Impedance Control of Redundant and Flexible-Joint Robots. Springer.
Arevalo, J. C. and Garcia, E. 2012. Impedance Control for Legged Robots: An Insight Into the Concepts Involved. Systems, Man, and Cybernetics, Part C: Applications and Reviews. IEEE Transactions on. 42: 1400-1411.
Irawan, A., Nonami, K., Ohroku, H., Akutsu, Y. and Imamura, S. 2011. Adaptive Impedance Control with Compliant Body Balance for Hydraulically Driven Hexapod Robot. Journal of System Design and Dynamics. 5: 893-908.
Irawan, A. and Nonami, K. 2011. Optimal Impedance Control Based on Body Inertia for a Hydraulically Driven Hexapod Robot Walking on Uneven and Extremely Soft Terrain. Journal of Field Robotics. 28: 690-713.
Irawan, A. and Yee Yin, T. 2014. Optimizing Hexapod Robot Reconfiguration using HexaQuad Transformation. IAES International Journal of Robotics and Automation (IJRA). 3.
Lionel, L. 2006. Underwater Robots Part II: Existing Solutions and Open Issues. Mobile Robots: Towards New Applications. A. Lazinica, Ed., ed Germany: InTechOpen. 335-372.
Siegwart, R. and Nourbakhsh, I. R. 2004. Introduction to Autonomous Mobile Robots. MIT Press.
Tan, Y. Y. and Irawan, A. 2014. Combination of Transverse Trot Gait Pattern for Quadruped Walking Robot. Colloquium on Robotics, Unmanned System and Cybernetics (CRUSC2014). Pahang, Malaysia. 56-60.
Nonami, K., Barai, R. K., Irawan, A. and Daud, M. R. 2014. Kinematics, Navigation, and Path Planning of Hexapod Robot. Hydraulically Actuated Hexapod Robots. Ed: Springer Japan. 85-104.
Nonami, K., Barai, R. K., Irawan, A. and Daud, M. R. 2014. Hydraulically Actuated Hexapod Robots.
Irawan, A. and Nonami, K. 2012. Force Threshold-Based Omni-directional Movement for Hexapod Robot Walking on Uneven Terrain. Computational Intelligence, Modelling and Simulation (CIMSiM), 2012 Fourth International Conference. 127-132.
Ohroku, H., Irawan, A. and Nonami, K. 2009. A 3D Modeling for Hydraulic-Drive Hexapod Walking Robot Using 3D Geometric Technique with Distributed Numerical Model. Int J Autom Robot Auton Syst. 9: 236.
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