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

被引:1
|
作者
Qu, Yilin [1 ,2 ]
Xie, Xiao [2 ]
Zhang, Shucheng [3 ,4 ]
Xing, Cheng [1 ,2 ]
Cao, Yong [1 ,2 ]
Cao, Yonghui [1 ,2 ]
Pan, Guang [1 ,2 ]
Song, Baowei [1 ,2 ]
机构
[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Peoples R China
[2] Ningbo Inst NPU, Unmanned Vehicle Innovat Ctr, Ningbo 315103, Peoples R China
[3] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China
[4] Northwestern Polytech Univ, MIIT Key Lab Dynam & Control Complex Syst, Xian 710072, Peoples R China
关键词
manta robot; flexible pectoral fins; rigid-flexible coupling dynamic modeling; sequential coupling; BODY; MOVEMENTS;
D O I
10.3390/jmse12020292
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
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.
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页数:18
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