Frequency Splitting in MEMS Ring-based Coriolis Vibrating Gyroscopes Caused by Support Non-Linearity

Proceedings

McWilliam, Stewart¹  Napoli, Violetta Di²  Popov, Atanas A.³ 

[1] Author to whom correspondence should be addressed.;Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.

关键词: Coriolis Vibrating Gyroscopes (CVGs);    mechanical non-linearity;    frequency split;   

DOI  :  10.3390/proceedings2130755

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

A mathematical model is developed to describe the 2? in-plane flexural response of supported ring-based Coriolis Vibrating Gyroscopes (CVGs) as the ring is driven into large amplitude vibration. Whilst the 2? degenerate modes have same resonance frequency in the linear regime, mechanical non-linearity within the support structure induces a frequency split as the vibration amplitude increases. The origins and effects of geometrical non-linearity are investigated using the proposed analytical model.

【 授权许可】

CC BY