Abstract
Multi-legged robots need fault-tolerant gaits if one of attached legs suffers from a failure and cannot have normal operation. Moreover, when the robots with a failed leg are walking over rough terrain, fault-tolerance should be combined with adaptive gait planning for successful locomotion. In this paper, a strategy of fault-tolerant gaits is proposed which enables a hexapod robot with a locked joint failure to traverse two-dimensional rough terrain. This strategy applies a Follow-The-Leader (FTL) gait in post-failure walking, having the advantages of both fault-tolerance and terrain adaptability. The proposed FTL gait can produce the maximum stride length for a given foot position of a failed leg and better ditch-crossing ability than the previous fault-tolerant gaits. The applicability of the proposed FTL gait is verified using computer graphics simulations.
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Chen, W., Low, K.H., Yeo, S.H.: Adaptive gait planning for multi-legged robots with an adjustment of center-of-gravity. Robotica 17(4), 391–403 (1999)
Choi, B.S., Song, S.M.: Fully automated obstacle-crossing gaits for walking machine. IEEE Trans. Syst. Man Cybern. 18(6), 952–964 (1989)
Chu, S.K.K., Pang, G.K.H.: Comparison between different model of hexapod robot in fault-tolerant gait. IEEE Trans. Syst. Man Cybern. A. 32(6), 752–756 (2002)
English, J.D., Maciejewski, A.A.: Robotic workspaces after a free-swinging failure. J. Intell. Robot. Syst. 19(1), 55–72 (1997)
Estremera, J., Gonzalez de Santos, P.: Generating continuous free crab gaits for quadruped robots on irregular terrain. IEEE Trans. Robot. 21(6), 1067–1076 (2005)
Gonzalez de Santos, P., Jimenez, M.A.: Generation of discontinuous gaits for quadruped walking vehicles. J. Robot. Syst. 12(9), 599–611 (1995)
Gonzalez de Santos, P., Jimenez, M.A.: Path tracking with quadruped walking machines using discontinuous gaits. Comput. Electr. Eng. 21(6), 383–396 (1995)
Hassan, M., Notash, L.: Design modification of parallel manipulators for optimum fault tolerance to joint jam. Mech. Mach. Theory 40(5), 559–577 (2005)
Lewis, C.L., Maciejewski, A.A.: Fault tolerant operation of kinematically redundant manipulators for locked joint failures. IEEE Trans. Robot. Autom. 13(4), 622–629 (1997)
Lin, J.N., Song, S.M.: Modeling gait transitions of quadrupeds and their generalization with CMAC neural networks. IEEE Trans. Syst. Man Cybern. C 32(3), 177–189 (2002)
McGhee, R.B., Iswandhi, G.I.: Adaptive locomotion of a multilegged robot over rough terrain. IEEE Trans. Syst. Man Cybern. 9(4), 176–182 (1979)
Miao, S., Howard, D.: Optimal tripod gait generation for hexapod walking machines. Robotica 18(6), 639–649 (2000)
Pal, P.K., Jayarajan, K.: Generation of free gait-a graph search approach. IEEE Trans. Robot. Autom. 7(3), 299–305 (1991)
Qiu, X.D., Song, S.M.: A strategy of wave gait for a walking machine traversing a rough planar terrain. J. Mech. Transm. Autom. Des. 111(4), 471–478 (1989)
Rebula, J.R., Neuhaus, P.D., Bonnlander, B.V., Johnson, M.J., Pratt, J.E.: A controller for the littledog quadruped walking on rough terrain. In: IEEE International Conference on Robotics and Automation, pp. 1467–1473. IEEE, Piscataway (2007)
Song, S.M., Waldron, K.J.: An analytical approach for gait study and its application on wave gaits. Int. J. Rob. Res. 6(2), 60–70 (1987)
Yang, J.M.: Gait synthesis for hexapod robots with a locked joint failure. Robotica 23(6), 701–708 (2005)
Yang, J.M.: Fault-tolerant crab gaits and turning gaits for a hexapod robot. Robotica 24(2), 269–270 (2006)
Yang, J.M.: Kinematic constraints on fault-tolerant gaits for a locked joint failure. J. Intell. Robot. Syst. 45(4), 323–342 (2006)
Yang, J.M., Kim, J.H.: Fault-tolerant locomotion of the hexapod robot. IEEE Trans. Syst. Man Cybern. B 28(1), 109–116 (1998)
Zhu, J., Sun, D., Tso, S.K.: Development of a tracked climbing robot. J. Intell. Robot. Syst. 35(4), 427–444 (2002)
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Yang, JM. Fault-Tolerant Gait Planning for a Hexapod Robot Walking over Rough Terrain. J Intell Robot Syst 54, 613–627 (2009). https://doi.org/10.1007/s10846-008-9282-x
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DOI: https://doi.org/10.1007/s10846-008-9282-x