Dynamic effects are very important in improving the design and study of the micro-robot. In the paper, our preliminary
work in using ICPF to develop a novel tortoise-like flexible micro-robot with four legs and one tail is reported, which
can crawl and swim underwater. ICPF is the abbreviation of Ionic Conducting Polymer gel Film which is a kind of smart
film and can give large and fast bending displacement in the presence of a low applied voltage in wet condition. For
controlling and analyzing easily the robot, we establish the micro-robot's tail dynamic model by applying Pseudo-Rigid-Body-Dynamic-Model (PRBDM). The model is established by considering the dynamic effect of the robot's tail, which
is based on statics and kinematics. Then, the frequency analysis of a micro-robot based on PRBDM is investigated.
Based on the PRBDM, the relation between the robot's tail angle displacement and the electrical voltage's frequency ω
is theoretically derived and the simulation result for the tail's angle displacement is performed.
In the paper, we present a novel tortoise-like flexible micro-robot with four legs which can crawl and swim underwater. These legs are actuated by ICPF (Ionic Conducting Polymer Film) which is a kind of smart film and has the characteristics of flexibility, good response and being driven by a low voltage. For improving the robot's reliability and feasibility, we establish the micro-robot's dynamic model by applying Pseudo-Rigid-Body-Dynamic-Model (PRBDM). The model is established by considering the dynamic effect of the robot, which is based on statics and kinematics. Then, the frequency analysis of a micro-robot based on PRBDM is investigated. Based on the PRBDM, the relation between the robot's structure parameters and its natural frequency is theoretically derived and a numerical computation of the robot is performed.
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