A Study on the Motion Mechanism of Articulated Fish Robot

Kim, Hyoung-seok; Lee, Byung-Ryong; Kim, Rak-jin

doi:10.1109/icma.2007.4303591

Cited by 10 publications

(1 citation statement)

References 5 publications

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“…To the best of authors’ knowledge, a well-expressed model which simultaneously combines dynamics and actuator properties of fish robots is rare. Most of delivered results only discussed partial models of fish robots, such as modeling of the fish tail, analyses of up-down motions and the backward dynamics of fish robots, four-link motion mechanisms (Nakashima and Ohgishi, 2003; Kim et al , 2008; Lin and Suebsaiprom, 2012; Kim et al , 2007), balance system in the fish head (Lin and Suebsaiprom, 2013; Leonard and Woolsey, 2002) and optimization designs of fish robots’ thrust or hydrodynamic forces (Cho et al , 2009; Kim et al , 2012; Lin et al , 2012; Wang and Yu, 2005). From the above survey of literature, it is easy to know that three-dimensional (3D) modeling of fish robots including all dynamics, kinematics and hydrodynamic effects is an important issue for developing a realistic fish prototype.…”

Section: Introductionmentioning

confidence: 99%

A complete modeling for fish robots with actuators

Chen

Chen²,

Chen

et al. 2019

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Purpose For precisely presenting the swimming behavior of fish robots underwater and the practical implementation purpose, this paper aims to investigate a well-formulated fish robot model which integrates the nonlinear rigid body dynamics, kinematics and models of actuators. Design/methodology/approach This fish robot model is mainly built up by three basic parts: a balance mechanism, a four-links vibrator and a caudal fin. In the fish robot’s head, there is a balance mechanism used to control the rotations in pitch and roll directions of the fish robot by moving two movable masses. The four-links vibrator with three active joints actuated by DC motors is designed to vibrate the fish’s body. In the end of the fish robot body, a caudal fin which connects with the passive joint is developed to generate hydrodynamic thrust forces to propel the fish robot. Findings From the real stability tests and control verification, it is obvious that this proposed model can precisely present the swimming behavior of fish robots and possesses the potential to develop a fish-like robotic prototype. Originality/value A well-formulated model with dynamics of actuators is integrated for presenting the swimming behavior of carangiform locomotion type fish robots in this investigation. From the simulation results and the practical test of a real fish robot, the feasibility of this proposed model for building up real fish robots can be proven, and this proposed model is accurate enough to effectively present the swimming behavior of fish robots.

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Section: Introductionmentioning

confidence: 99%