A Numerical Simulation Analysis on Bionic Robot Fish Based on Computational Fluid Dynamics (CFD) Method

Wang, Gang; Song, Yingjie; Tang, Wusheng; Xie, Guangming; Li, Dejian

doi:10.1166/jno.2019.2539

Cited by 6 publications

(2 citation statements)

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“…In this study, the lift and drag model is adopted to analyze the hydrodynamic characteristics of the fluke. Generally speaking, the lift and drag coefficients depend on the morphology of the fluke, and CFD is an effective method of obtaining the hydrodynamic characteristics of irregularly shaped objects [ 23 , 24 , 25 ].…”

Section: Analysis Of the Motion Characteristics Of Robotic Dolphinmentioning

confidence: 99%

A Torque Control Strategy for a Robotic Dolphin Platform Based on Angle of Attack Feedback

Wang

Chen

et al. 2023

Biomimetics

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Biological fish can always sense the state of water flow and regulate the angle of attack in time, so as to maintain the highest movement efficiency during periodic flapping. The biological adjustment of the caudal fin’s angle of attack (AoA) depends on the contraction/relaxation of the tail muscles, accompanying the variation in tail stiffness. During an interaction with external fluid, it helps to maintain the optimal angle of attack during movement, to improve the propulsion performance. Inspired by this, this paper proposes a tail joint motion control scheme based on AoA feedback for the high-speed swimming of bionic dolphins. Firstly, the kinematic characteristics of the designed robot dolphin are analyzed, and the hardware basis is clarified. Second, aiming at the deficiency of the tail motor, which cannot effectively cooperate with the waist joint motor during high-frequency movement, a compensation model for the friction force and latex skin-restoring force is designed, and a joint angle control algorithm based on fuzzy inference is proposed to realize the tracking of the desired joint angle for the tail joint in torque mode. In addition, a tail joint closed-loop control scheme based on angle of attack feedback is proposed to improve the motion performance. Finally, experiments verify the effectiveness of the proposed motion control scheme.

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Section: Analysis Of the Motion Characteristics Of Robotic Dolphinmentioning

confidence: 99%

A Torque Control Strategy for a Robotic Dolphin Platform Based on Angle of Attack Feedback

Wang

Chen

et al. 2023

Biomimetics

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show abstract

“…While the results of shape and dynamics analysis of transport machinery such as cars have been increasingly improved, there are still few results on the shape design and hydrodynamic analysis of new underwater robots such as bionic fish. Bian Zewu et al designed a flutter gliding underwater robot and performed CFD analysis [7]; Zhao Hualin made a detailed analysis of the drag reduction performance of the bionic surface by setting different parameters such as jet aperture, direction and velocity [4]; therefore, this paper also proposes a bionic carp model for shallow water aquaculture and uses CFD software to perform hydrodynamic analysis on it.…”

Section: Introductionmentioning

confidence: 99%

CFD-based hydrodynamic analysis of bionic fish

2023

IJNDES

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Underwater robots are now widely used in marine exploration. Traditional underwater robots are large, less maneuverable, have high resistance to underwater operation and are also not conducive to close observation of fish behavioral habits. Bionic fish robots can compensate for some of these disadvantages very well. At the same time, there is still relatively little work on the shape design and analysis of bionic fish robots, so it is important to study the shape of bionic fish and perform hydrodynamic analysis on them. Based on the theory of fluid mechanics, this paper systematically applies the dynamic properties of fluid and designs an underwater robot imitating a carp using SOLIDWORKS 3D modelling software. Numerical simulations using CFD software show that this fish-like form structure has a low drag coefficient and a reasonable design, and can also provide guidance for form design optimization work. It is clear from the literature that the analysis of the shape of bionic fish is still focused on certain specific structures and that there is a lack of work on the overall analysis and evaluation of the shape. The proposed research method is not only applicable to the overall analysis of the bionic fish shape, but also to most of the bionic fish shape analysis scenarios, which is highly applicable.

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Review of research and control technology of underwater bionic robots

Cui,

Li,

Wang

et al. 2023

Intell. Mar. Technol. Syst.

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As marine resources continue to be exploited, the remarkable locomotion and coordination of fish provide an excellent source of inspiration for scientists and engineers to design and control the next -generation autonomous underwater vehicles within a bionic framework. Underwater biomimetic robots combine bionics and robot technology, and their biological characteristics offer a lot of convenience for the robot so that it can obtain better performance in adaptability and robustness. Recently, with the combination of bionics, mechanics, electronics, materials science, and automation, there has been great progress in developing underwater bionic robots with different structure types and energy supply modes. This paper summarizes the research status of underwater robots, focuses on the research status of underwater bionic robots with different materials, types and motion modes, and introduces the propulsion mechanism of underwater robots with different structures and the control methods adopted in the propulsion process. Finally, the broad application prospect and market potential of underwater biomimetic robot are introduced.

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A Numerical Simulation Analysis on Bionic Robot Fish Based on Computational Fluid Dynamics (CFD) Method

Cited by 6 publications

References 0 publications

A Torque Control Strategy for a Robotic Dolphin Platform Based on Angle of Attack Feedback

A Torque Control Strategy for a Robotic Dolphin Platform Based on Angle of Attack Feedback

CFD-based hydrodynamic analysis of bionic fish

Review of research and control technology of underwater bionic robots

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