TY - JOUR
T1 - Micro Geared Ultrasonic Motor
AU - Mashimo, Tomoaki
AU - Urakubo, Takateru
AU - Shimizu, Yukiharu
N1 - Funding Information:
Manuscript received September 7, 2017; revised November 10, 2017; accepted January 3, 2018. Date of publication January 23, 2018; date of current version April 16, 2018. Recommended by Technical Editor L. Zuo. This work was supported in part by the Japan Society for the Promotion of Science (JSPS) KAKENHI under Grant 16H06075, and in part by the Matching Planner Program from Japan Science and Technology Agency, (JST). (Corresponding author: Tomoaki Mashimo.) T. Mashimo is with the Electronics-Inspired Interdisciplinary Research Institute, Toyohashi University of Technology, Toyohashi 441-8580, Japan (e-mail: mashimo@eiiris.tut.ac.jp).
Publisher Copyright:
© 1996-2012 IEEE.
PY - 2018/4
Y1 - 2018/4
N2 - We propose a micro geared ultrasonic motor, the smallest set of a micro ultrasonic motor and micro planetary gear. Our micro ultrasonic motor is one of the most powerful motors in one-millimeter-scale motors. The use of a micro planetary gear amplifies the motor torque to several tens of times and the geared motor enables a high torque density that was unachievable by existing miniature motors. The goal of this paper is to analyze the dynamic characteristic of the micro geared ultrasonic motor with a mathematical model and confirm the torque amplification experimentally using a micro planetary gear prototype. To build the microgear components, we employ a micro-injection molding process using metallic glass, a relatively new material, with a low melting temperature. The micro planetary gear assembly with a diameter of 2 mm, a length of 5.9 mm, and a gear ratio of 256 is built and connected to the micro ultrasonic motor. The micro geared ultrasonic motor demonstrates a continuous torque of 0.4 mN and a peak torque of 1 mN m in the load lifting experiments.
AB - We propose a micro geared ultrasonic motor, the smallest set of a micro ultrasonic motor and micro planetary gear. Our micro ultrasonic motor is one of the most powerful motors in one-millimeter-scale motors. The use of a micro planetary gear amplifies the motor torque to several tens of times and the geared motor enables a high torque density that was unachievable by existing miniature motors. The goal of this paper is to analyze the dynamic characteristic of the micro geared ultrasonic motor with a mathematical model and confirm the torque amplification experimentally using a micro planetary gear prototype. To build the microgear components, we employ a micro-injection molding process using metallic glass, a relatively new material, with a low melting temperature. The micro planetary gear assembly with a diameter of 2 mm, a length of 5.9 mm, and a gear ratio of 256 is built and connected to the micro ultrasonic motor. The micro geared ultrasonic motor demonstrates a continuous torque of 0.4 mN and a peak torque of 1 mN m in the load lifting experiments.
KW - Micro actuators
KW - piezoelectricity
KW - planetary gear
KW - transmission mechanism
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U2 - 10.1109/TMECH.2018.2792462
DO - 10.1109/TMECH.2018.2792462
M3 - Article
AN - SCOPUS:85040926053
SN - 1083-4435
VL - 23
SP - 781
EP - 787
JO - IEEE/ASME Transactions on Mechatronics
JF - IEEE/ASME Transactions on Mechatronics
IS - 2
ER -