Modelling of Tendon-Driven Continuum Robot Based on Constraint Analysis and Pseudo-Rigid Body Model

Troeung, Charles; Liu, Shaotong; Chen, Chao

doi:10.1109/lra.2023.3234821

Cited by 6 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the resulting models are not generalizable to new designs and conditions. In dealing with different robots with flexible parts, we can distinguish discrete models into the following three main groups: the lumped-mass [25], the Pseudo-Rigid-Body [26], and the discrete rods models [27]. They are widely used for underwater robots because of allowing real-time simulation.…”

Section: Commonly Used Theories and Methods For Modeling Manta Robotmentioning

confidence: 99%

A Rigid-Flexible Coupling Dynamic Model for Robotic Manta with Flexible Pectoral Fins

Qu,

Xie,

Zhang

et al. 2024

JMSE

View full text Add to dashboard Cite

The manta ray, exemplifying an agile swimming mode identified as the median and paired fin (MPF) mode, inspired the development of underwater robots. Robotic manta typically comprises a central rigid body and flexible pectoral fins. Flexible fins provide excellent maneuverability. However, due to the complexity of material mechanics and hydrodynamics, its dynamics are rarely studied, which is crucial for the advanced control of robotic manta (such as trajectory tracking, obstacle avoidance, etc.). In this paper, we develop a multibody dynamic model for our novel manta robot by introducing a pseudo-rigid body (PRB) model to consider passive deformation in the spanwise direction of the pectoral fins while avoiding intricate modeling. In addressing the rigid-flexible coupling dynamics between flexible fins and the actuation mechanism, we employ a sequential coupling technique commonly used in fluid-structure interaction (FSI) problems. Numerical examples are provided to validate the MPF mode and demonstrate the effectiveness of the dynamic model. We show that our model performs well in the rigid-flexible coupling analysis of the manta robot. In addition to the straight-swimming scenario, we elucidate the viability of tailoring turning gaits through systematic variations in input parameters. Moreover, compared with finite element and CFD methods, the PRB method has high computational efficiency in rigid-flexible coupling problems. Its potential for real-time computation opens up possibilities for future model-based control.

show abstract

Section: Commonly Used Theories and Methods For Modeling Manta Robotmentioning

confidence: 99%