Analysis and Compensation of Imperfection Effects in Piezoelectric Vibratory Gyroscopes
نویسندگان
چکیده
........................................................................................................ i ACKNOWLEDGMENTS .................................................................................... iii TABLE OF CONTENTS ..................................................................................... iv NOMENCLATURE ............................................................................................. vi LIST OF TABLES ............................................................................................... x LIST OF FIGURES ............................................................................................. xi CHAPTER 1-Introduction .................................................................................... 1 1.1 Principles of Operation of Vibratory Gyroscopes ........................... 1 1.2 Review of Vibratory Gyroscope Designs ....................................... 4 1.3 Effects of Imperfections ................................................................ 8 1.4 Research Objectives ...................................................................... 11 1.5 Dissertation Layout ....................................................................... 11 CHAPTER 2-Piezoelectric Resonator Modeling ................................................... 13 2.
منابع مشابه
Closed-Loop Compensation of the Quadrature Error in MEMS Vibratory Gyroscopes
In this paper, a simple but effective method for compensation of the quadrature error in MEMS vibratory gyroscope is provided. The proposed method does not require any change in the sensor structure, or additional circuit in the feedback path. The mathematical relations of the proposed feedback readout system were analyzed and the proposed solution assures good rejection capabilities. Based on ...
متن کاملActive Structural Error Suppression in MEMS Vibratory Rate Integrating Gyroscopes
Due to restrictive tolerancing in microfabrication, structural imperfections that reduce performance of fabricated micro devices are typical. In microelectromechanical vibratory gyroscopes, feedback control is a common strategy in attempting to correct the imperfections. However, a purely feedback control can be insufficient for compensation of all the errors, requiring post processing in the f...
متن کاملThe Development of Micromachined Gyroscope Structure and Circuitry Technology
This review surveys micromachined gyroscope structure and circuitry technology. The principle of micromachined gyroscopes is first introduced. Then, different kinds of MEMS gyroscope structures, materials and fabrication technologies are illustrated. Micromachined gyroscopes are mainly categorized into micromachined vibrating gyroscopes (MVGs), piezoelectric vibrating gyroscopes (PVGs), surface...
متن کاملA Study of the Temperature Characteristics of Vibration Mode Axes for Vibratory Cylinder Gyroscopes
The zero bias stability, which is an important performance parameter for vibratory cylinder gyroscopes, is high sensitive to temperature change. It is considered that the varying temperature makes the vibration mode axes unstable, which has significant influence on the zero bias stability. This paper will investigate this problem in detail. First, the relationships between the angular positions...
متن کاملDesign and Application of Quadrature Compensation Patterns in Bulk Silicon Micro-Gyroscopes
This paper focuses on the detailed design issues of a peculiar quadrature reduction method named system stiffness matrix diagonalization, whose key technology is the design and application of quadrature compensation patterns. For bulk silicon micro-gyroscopes, a complete design and application case was presented. The compensation principle was described first. In the mechanical design, four typ...
متن کامل