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CSME 2018/10
Volume 39 No.5
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471-476
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A Multi Degree of Freedom Motion Platform with Micro-pusher using Additive Manufacture Technology
Yi-Cheng Chena and Sheng-Chih Shen
aDepartment of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan, Taiwan 701, ROC. ; Intelligent Mechatronics Department, Smart Micro-systems Technology Center, Industrial Technology Research Institute
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Abstract:
A novel multi-degree-of-freedom (MDOF) motion platform was developed using symmetric piezoelectric plate and a Ni alloy micro-pusher element. An additive manufacturing (AM) technique was employed to manufacture a Ni alloy micro-pusher, which was then attached at the midpoint of the long side of a piezoelectric plate with dual electrodes to construct a symmetric piezoelectric actuator (SPA). The research integrated the concept of bricks, and three different vibration modes of the SPA were designed to develop a MDOF motion platform, which was able to rotate a hemisphere device along three perpendicular axes. The experiment demonstrated the MDOF motion platform working frequencies along the X, Y, and Z axes to be 223.6, 223.2, and 225 kHz and the rotation speeds to reach 76 rpm, 71 rpm, and 192 rpm, respectively, at a driving voltage of 30Vpp. In the future, this MDOF motion platform may be used for a number of applications, such as portable mobile devices and sun-tracking systems in green energy harvesters.
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Keywords: Additive Manufacturing; MDOF motion platform; Micro-pusher; Piezoelectric actuator.
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©
2018
CSME , ISSN 0257-9731
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