title: Analysis on Node Position of Imperfect Resonators for Cylindrical Shell Gyroscopes.
abstract: For cylindrical shell gyroscopes, node position of their operating eigenmodes has an important influence on the gyroscopes' performance. It is considered that the nodes are equally separated from each other by 90° when the resonator vibrates in the standing wave eigenmode. However, we found that, due to manufacturing errors and trimming, the nodes may not be equally distributed. This paper mainly analyzes the influences of unbalanced masses on the cylindrical resonators' node position, by using FEM simulation and experimental measurement.
authors.affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. wzdnudt@163.com.
authors.forename: Zidan
authors.initials: Z
authors.lastname: Wang
authors.affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. ylwu_nudt@sina.com.
authors.forename: Yulie
authors.initials: Y
authors.lastname: Wu
authors.affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. fordada@126.com.
authors.forename: Xiang
authors.initials: X
authors.lastname: Xi
authors.affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. zymnudt@163.com.
authors.forename: Yongmeng
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. xzwu@nudt.edu.cn.
authors.forename: Xuezhong
authors.initials: X
authors.lastname: Wu
keywords: imperfect resonator; node position; trimming method