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Ring microgyroscope modeling and performance evaluation

Esmaeili, M ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2005-80635
  3. Publisher: 2005
  4. Abstract:
  5. This paper discusses the effects of substrate motions on the performance of a microgyroscope modeled as a ring structure. Using Extended Hamilton's Principle, the equations of motion are derived. The natural frequency equation and response of gyroscope are then extracted in closed-form for the case where substrate undergoes normal rotation. The Galerkin approximation is used for discretizing the partial differential equations of motion into ordinary differential equations. In these equations, the effects of angular accelerations, centripetal and coriolis accelerations are well apparent. The response of the system to different inputs is studied and the system sensitivity to input parameter changes is examined. Finally, the sources of error in the measurement of input rotational rate are recognized. The study demonstrates the importance of errors caused by cross axes inputs on the gyroscope output measurements. Copyright © 2005 by ASME
  6. Keywords:
  7. Angular accelerations ; Disturbance measurement ; Frequency equations ; Vibrating ring microgyroscope ; Acceleration ; Approximation theory ; Equations of motion ; Galerkin methods ; Hamiltonians ; Motion estimation ; Partial differential equations ; Rotation ; Structural analysis ; Gyroscopes
  8. Source: 2005 ASME International Mecahnical Engineering Congress and Exposition, IMECE 2005, Orlando, FL, 5 November 2005 through 11 November 2005 ; Volume 7 MEMS , 2005 , Pages 241-247 ; 1096665X (ISSN); 079184224X (ISBN); 9780791842249 (ISBN)
  9. URL: https://journals.sagepub.com/doi/abs/10.1177/1077546306064445