Head-raising of snake robots based on a predefined spiral curve method

Xiaobo Zhang, Jinguo Liu*, Zhaojie Ju, Chenguang Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

A snake robot has to raise its head to acquire a wide visual space for planning complex tasks such as inspecting unknown environments, tracking a flying object and acting as a manipulator with its raising part. However, only a few researchers currently focus on analyzing the head-raising motion of snake robots. Thus, a predefined spiral curve method is proposed for the head-raising motion of such robots. First, the expression of the predefined spiral curve is designed. Second, with the curve and a line segments model of a snake robot, a shape-fitting algorithm is developed for constraining the robot's macro shape. Third, the coordinate system of the line segments model of the robot is established. Then, phase-shifting and angle-solving algorithms are developed to obtain the angle sequences of roll, pitch, and yaw during the head-raising motion. Finally, the head-raising motion is simulated using the angle sequences to validate the feasibility of this method.

Original languageEnglish
Article number2011
JournalApplied Sciences (Switzerland)
Volume8
Issue number11
DOIs
Publication statusPublished - 23 Oct 2018

Keywords

  • Head-raising
  • Phase-shifting
  • Shape-fitting
  • Snake robots
  • Spiral curve
  • RCUK
  • EPSRC
  • EP/S001913/1

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