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影响因子：2.7

DOI码：10.1177/1045389X231187484

所属单位：南京航空航天大学

教研室：航空学院-精密驱动与控制研究所

发表刊物：Journal of Intelligent Material Systems and Structures

关键字：Rotary ultrasonic motor backup function redundant piezoelectric fault tree analysis finite element simulation tooth type stressing test

摘要：To fulfill high-reliability requirements for aerospace applications, a novel traveling wave rotary ultrasonic motor with a piezoelectric backup function ( Backup motor ) is proposed in this paper. The backup function is enabled by the addition of a set of piezoelectric ceramics (PZT). Based on the ultrasonic motor of the CSX-60, a cantilever-tooth backup motor (CTBM) is designed and fabricated. This backup motor can operate in three working modes according to the excitation settings of PZTs, namely normal mode, backup mode, and enhanced mode. The relationships between three working modes' performances are analyzed by finite element (FE) analysis and prototype tests. The results show that backup mode, as the substitution, can nearly reach normal mode's performance, while enhanced mode is obviously higher than others. Furthermore, a modified backup motor with straight-tooth (STBM) and different sizes of PZT is designed and tested as a supplement to verify the feasibility of the proposal. In addition, the effect of stress reduction on PZT damage is verified by extreme working experiments. The comparison between the two types of motors indicates that STBM can provide better frictional drive performance. This proposal can provide a new reference for the subsequent reliability study of ultrasonic motors.

论文类型：期刊论文

学科门类：工学

文献类型：J

卷号：34

期号：20

页面范围：2414-2427

是否译文：否

发表时间：2023-01-01

收录刊物：EI、SCI、SCIE

合写作者：Hu, Xiaobin,Yang, Mojian,Huan, Yongjie,Ren, Weihao,Xiong, Yue,Li, Huafeng