Journal of the Japan Society for Precision Engineering
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
Paper
Development of Spherical Ultrasonic Motor for Space
—Evaluation of Lining Material and Binding Material at High Temperature—
Taro OOHASHIKazuhiro OKITAUichi NISHIZAWAShigeki TOYAMA
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JOURNAL FREE ACCESS

2015 Volume 81 Issue 11 Pages 1027-1032

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Abstract
In recent 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 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 resolve it, we have applied stator lining materials and shifted frequency with 0.4kHz from resonant frequency and we have shown that it meets durability-required specifications.
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© 2015 The Japan Society for Precision Engineering
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