Journal of System Simulation ›› 2022, Vol. 34 ›› Issue (4): 759-767.doi: 10.16182/j.issn1004731x.joss.20-0871

• Modeling Theory and Methodology • Previous Articles     Next Articles

Motion Simulation and Performance Analysis of 2D Variable Stiffness Snake-like Robot

Yanqin Long1(), Guifang Qiao1,2, Guangming Song1(), Ying Zhang2, Linlin Cheng1   

  1. 1.School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
    2.School of Automation, Nanjing Institute of Technology, Nanjing 211167, China
  • Received:2020-11-10 Revised:2020-12-17 Online:2022-04-30 Published:2022-04-19
  • Contact: Guangming Song E-mail:1678539298@qq.com;mikesong@seu.edu.cn

Abstract:

Aiming at the study on the motion performance of a two-dimensional variable stiffness snake-robot, a Simulink/Adams co-simulation model is established, and the effects of the damping coefficient, the stiffness parameters and the angular frequency of the variable stiffness actuator on the motion energy consumption are analyzed. To realize the synchronous control of joint trajectory and stiffness, a motion controller based on two-layer CPG is proposed. The results show that the damping coefficient can effectively reduce the proportion of starting energy consumption of the variable stiffness snake-like robot, and the ratio of starting energy consumption increases with the stiffness parameter increasing at low speed. The energy consumption of the variable stiffness snake-like robot has a peak value at high speed, so the movement under this condition should be avoided.

Key words: snake-like robot, variable stiffness actuator, bio-inspired control, energy consumption, central pattern generator

CLC Number: