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Analysis on Node Position of Imperfect Resonators for Cylindrical Shell Gyroscopes
Zidan Wang1, Yulie Wu2, Xiang Xi3
1College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China. wzdnudt@163.com.
Sensors (Basel, Switzerland)
|August 3, 2016
Summary
Unbalanced masses in cylindrical shell gyroscopes can shift node positions, affecting performance. This study analyzes these shifts using finite element method (FEM) simulations and experimental measurements.
Area of Science:
- Mechanical Engineering
- Vibrational Analysis
- Sensor Technology
Background:
- The performance of cylindrical shell gyroscopes is significantly influenced by the node positions of their operating eigenmodes.
- Ideally, nodes are equally spaced at 90° during standing wave eigenmode vibration.
- Manufacturing errors and trimming can lead to unequal node distribution.
Purpose of the Study:
- To investigate the impact of unbalanced masses on the node positions of cylindrical resonators.
- To understand how deviations from ideal node distribution affect gyroscope performance.
Main Methods:
- Finite Element Method (FEM) simulations were employed to model the resonators.
- Experimental measurements were conducted to validate simulation results.
Main Results:
- Unbalanced masses were found to alter the node positions of the cylindrical resonators.
- The study quantifies the influence of these mass imbalances on node distribution.
Conclusions:
- Node position deviation due to unbalanced masses is a critical factor in cylindrical gyroscope performance.
- Accurate modeling and measurement of these effects are essential for gyroscope design and calibration.
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