Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (2): 168-173.DOI: 10.12068/j.issn.1005-3026.2017.02.004

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Ricochetal Brachiation Motion Planning and Control for Two-Link Bio-primate Robot

CHENG Hong-tai, WAN Deng-ke, HAO Li-na   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2015-09-16 Revised:2015-09-16 Online:2017-02-15 Published:2017-03-03
  • Contact: CHENG Hong-tai
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Abstract: The tight coupling of locomotion and underactuated characteristics are the main difficulties for realizing ricochetal brachiation of a bio-primate robot. For the locomotion coupling, the segmented dynamic/kinematic models were built and analyzed. Then, a flexible, comprehensive and adaptive ricochetal brachiation motion planning algorithm was proposed in consideration of the constraint condition and switching condition. Therefore, pre- and post-flying postures were obtained. As to the underactuated characteristics, virtual-constraint-based trajectory planning and tracking control methods were adopted to ensure that the system could arrive at the pre-flying posture accurately. Finally, a ricochetal brachiation simulation model was built and the results show the effectiveness of the proposed trajectory planning and control strategy.

Key words: two-link bio-primate robot, trajectory planning, ricochetal brachiation, virtual constraint

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