Thrust Improvement of an Fish Robot Actuated by Compressed Unimorph Piezoelectric Composite Actuator
In this work, we have presented a fish robot actuated by four compressed light-weight piezo-composite actuators. Swimming speed, thrust, and drag of the fish robot were experimentally examined to verify effect of the applied compressive force on force actuation, consequently on swimming speed of fish robot. The swimming speed of the fish robot was measured for four different tail fin areas. The drag of the fish robot was estimated by experiment and computational fluid dynamics (CFD) simulation. For drag measurement, we have presented an apparatus to measure relatively small drag by using a high speed camera. The measured drag agreed well with the calculated one by the CFD. We have also suggested a thrust measurement apparatus, where we can ignore effect of vibratory motion of the system. The thrust of the fish robot was increased about 11％ due to the applied compressive force on the piezoceramic actuators. However, the drag of the fish robot was also increased due to increment of the cross section area.
Q. S. Nguyen S. Heo, H. C. Park D. Byun
Department of Advanced Technology Fusion,Konkuk University,1 Hwayang-dong,Gwangjin-gu,Seoul 143-701, Department of Advanced Technology Fusion,Konkuk University,Seoul,Korea Department of Aerospace Engineering,Konkuk University
国际会议
2009 IEEE International Conference on Robotics and Biomimetics(2009 IEEE 机器人与仿生技术国际会议 ROBIO 2009)
桂林
英文
1603-1608
2009-12-19（万方平台首次上网日期，不代表论文的发表时间）