In the paper the locomotion of snake robot is introduced considering locomotion in straight and curved pipe. For the straight pipe locomotion was designed traveling wave locomotion pattern with sine-like wave which expands from rear of the robot to its front. For the locomotion in curved pipe was designed approach which is based on inverse kinematic model including besides primary task also secondary tasks, namely kinematic singularities avoidance task, obstacle avoidance task and joint limit avoidance task. For final inverse kinematic model was used approach of weight matrices by which can be stated the priorities of particular tasks. Both case studies were tested by experimental snake robot in order to verify introduced methodology for locomotion in the straight and curved pipe.
 S. Hirose. Biologically Inspired Robots: Snake-like Locomotors and Manipulators, Oxford University Press, Oxford, 1993.
 S. Wakimoto, J. Nakajima, M. Tanaka, T. Kanda, K. Suzumori. A micro snake-like robot for small pipe inspection, MHS 2003. Proceedings of 2003 International Symposium on Micromechatronics and Human Science, pp. 303 – 308, DOI: 10.1109/MHS.2003.1249959.
 J. Everist, W. M. Shen. Mapping opaque and confined environments using proprioception, 2009 ICRA ‘09. IEEE International Conference on Robotics and Automation, pp. 1041 – 1046, DOI: 10.1109/ROBOT.2009.5152592.
 T. Maneewarn, B. Maneechai. Design of Pipe Crawling Gaits for a Snake Robot, IEEE International Conference on Robotics and Biomimetics, 2008. ROBIO 2008, pp. 1 – 6, DOI: 10.1109/ROBIO.2009.4912970.
 S. A. Fjerdingen, P. Liljeback, A. A. Transeth. A snake-like robot for internal inspection of complex pipe structures (PIKo), 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, pp. 5665 – 5671, DOI: 10.1109/IROS.2009.5354751
 F. Trebuňa, I. Virgala, M. Kelemen, T. Lipták. Locomotion of Snake Robot through the Pipe. Journal of Automation and Control2015 (3), No. 3, 135 – 139, DOI: 10.12691/automation-3-3-20.
 E. Prada, M. Valášek, I. Virgala, A. Gmiterko, M. Kelemen, M. Hagara, T. Lipták. New approach of fixation possibilities investigation for snake robot in the pipe, 2015 IEEE International Conference on Mechatronics and Automation (ICMA), 2152 – 7431, DOI: 10.1109/ICMA.2015.7237657.
 A. Akbarzadeh, Jalil. Safehian, Javad Safehian, H. Kalani. Generating Snake Robot Concertina Locomotion Using a New Dynamic Curve. International Journal of Modeling and Optimization2011 (1), No. 2, 134 – 140.
 R. Silva-Ortigoza, C. Márquez-Sánchez, F. Carrizosa-Corral, V. M. Hernández-Guzmán, J. R. García-Sánchez, H. Taud, M. Marciano-Melchor, J. A. Álvarez-Cedillo. Obstacle Avoidance Task for a Wheeled Mobile Robot – A Matlab-Simulink-Based Didactic Application, MATLAB Applications for the Practical Engineer, 2014, ISBN 978-953-51- 1719-3, DOI: 10.5772/57070.
 E. N. Sabudin, R. Omar, Ch. K. Melor. Potential Field Method and their Inherent Approaches for Path Planning. ARPN Journal of Engineering and Applied Sciences2016 (11), No. 18, 10801 – 10805.
 C. W. Wampler. Manipulator inverse kinematic solutions based on vector formulations and damped least squares methods. IEEE Transactions on Systems, Man, and Cybernetics1986 (16), 93–101.
 Y. Nakamura, H. Hanafusa. Inverse kinematics solutions with singularity robustness for robot manipulator control. Journal of Dynamic Systems, Measurement, and Control1986 (108), 163 – 171.
 F. Duchoň, R. Murár. Modelovanie a riadenie mobilného robota. AT&P journal Plus22006.
 Y. Turygin, P. Božek, Y. Nikitin, E. Sosnovich, A. Abramov. Enhancing the reliability of mobile robots control process via reverse validation. International Journal of Advanced Robotic Systems2016
 J. Úradníček, P. Kraus, M. Musil, M. Bachratý. Investigation of frictional stick-slick effect in disk brake NVH. Journal of Mechanical Engineering – Strojnícky časopis2017 (67), No. 1, 93 – 10.
 A. Shala, M. Bruci. Proposed robot scheme with 5 DOF and dynamic modelling using Maple software. Journal of Mechanical Engineering – Strojnícky časopis2017 (67), No. 2, 101 – 108.