Journal of Shanghai University(Natural Science Edition) ›› 2020, Vol. 26 ›› Issue (6): 884-895.doi: 10.12066/j.issn.1007-2861.2167

• Intelligent Ocean Surface Robot • Previous Articles     Next Articles

Hydrodynamic modeling of an eccentric paddle mechanism with rotational paddling gait

LI Xiaomao, PENG Yu, LI Tianbo, CHEN Junjie, XU Jia, CUI Jianxiang()   

  1. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
  • Received:2019-01-11 Online:2020-12-31 Published:2020-12-29
  • Contact: CUI Jianxiang E-mail:cuijianxiang@shu.edu.cn

Abstract:

In previous work, an eccentric paddle (ePaddle) mechanism has been proposed to improve the mobility of amphibious robot under challenging environments, which can execute various terrestrial and aquatic gaits. In this paper, to investigate the hydrodynamic characteristics of rotational paddling gait, a hydrodynamic model is presented based on Morison equation for analyzing the effects on thrust characteristics with different configuration of parameters such as slip ratio, eccentric distance, etc. The accuracy of the model has been verified by the experiments. Based on the theoretical model and experimental results, the reasonable application suggestions for the rotational paddling gait of the ePaddle are presented.

Key words: eccentric paddle (ePaddle) mechanism, rotational paddling gait, hydrodynamic model, slip ratio, amphibious robot

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