Title: Study on the tribological properties of ultrasonic motor frictional interface under aerospace
Abstract: With the development of spaceflight, lunar and mars explorations, there are urgent requirements for the high performance ultrasonic motor with large power, high precision and long life as precision drive system. However, low energy transfer efficiency and severe wear will limit its application in space environment. This study aims to reveal the mechanisms and build the theories of high energy transfer efficiency by studying the synergistic effect of temperature and mechanics on the performance of ultrasonic motor. Then, friction materials with high energy transfer efficiency are designed by optimizing the functional component and microstructure. Finally, the wear mechanisms of ultraonic motor in space environment are specially explored. This study will formulate the theory of high energy transfer efficiency, design methodology of high performance friction materials and key technology of wear control of space ultrasonic motor
Assoc. Prof. Chuang BI, University of Electronic Science and Technology of China, China
Biography：Dr. Chuang Bi is an associate professor and a doctoral supervisor in the School of Astronautics and Aeronautics at University of Electronic Science and Technology of China, Chengdu, P. R. China. He conducted his Post-Doctoral training in 2018-2020 at Chongqing Changan Automobile Corporation Ltd., Chongqing, P. R. China. He obtained his Ph.D. at University College Dublin in 2012. He is the member of IEEE, and the member of Electromagnetic Compatibility Committee of China Power Supply Society. Dr. Bi’s primary research interests lie in the field of electromagnetic compatibility technologies in astronautics and aeronautics systems, complex electronic equipment and so on. He has published over 20 papers, and obtained over 10 national invention patents.