Development of Spherical Ultrasonic Motor for Space
S. Toyama*, T. Oohashi**, N. Fukaya***
*Tokyo A&T University Koganei, Japan,
** Kisarazu National College of Technology, Kisarazu, Japan,
***Tokyo Metropolitan College of Industrial Technology, Arakawaku, Japan,
In resent years, due to advances in science technology, space satellites have made progress. So, the presence of space debris has become problem in the world because they may collide each other. In our study, we have developed Spherical Ultrasonic Motor (SUSM) for space use with 3 Degree of Freedom (DOF) to drive the satellite thruster and resolve it. We aim that the satellites enter the atmosphere when the satellites reached the end of life, and SUSM controls thrusters when they inject for the directional control. We have made experiments of measuring torque, durability and lifetime. It shows that the torque and lifetime meets target value. But durability does not meet target value. To solve it, we have applied stator lining materials and shifted frequency
with 0.4 kHz from resonant frequency and we have shown that it meets durability-required specifications successfully.
ACTUATOR 2014 Manuscript B6.1
Publication date: 09/04/2015
Manuscript B6.1 published in Conference Proceedings ACTUATOR 2014
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