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Sensors 2013, 13(4), 4724-4741; doi:10.3390/s130404724

Research on Bell-Shaped Vibratory Angular Rate Gyro’s Character of Resonator

1,2,* , 2
1 Institute of Intelligent Control, Beijing Information Science & Technological University,Beijing 100101, China 2 School of Automation, Beijing Institute of Technology, Beijing 100084, China
* Author to whom correspondence should be addressed.
Received: 6 February 2013 / Revised: 20 March 2013 / Accepted: 21 March 2013 / Published: 10 April 2013
(This article belongs to the Special Issue Piezoelectric Sensors and Actuators)
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Bell-shaped vibratory angular rate gyro (abbreviated as BVG) is a new type Coriolis vibratory gyro that was inspired by Chinese traditional clocks. The resonator fuses based on a variable thickness axisymmetric multicurved surface shell. Its characteristics can directly influence the performance of BVG. The BVG structure not only has capabilities of bearing high overload, high impact and, compared with the tuning fork, vibrating beam, shell and a comb structure, but also a higher frequency to overcome the influence of the disturbance of the exterior environment than the same sized hemispherical resonator gyroscope (HRG) and the traditional cylinder vibratory gyroscope. It can be widely applied in high dynamic low precision angular rate measurement occasions. The main work is as follows: the issue mainly analyzes the structure and basic principle, and investigates the bell-shaped resonator’s mathematical model. The reasonable structural parameters are obtained from finite element analysis and an intelligent platform. Using the current solid vibration gyro theory analyzes the structural characteristics and principles of BVG. The bell-shaped resonator is simplified as a paraboloid of the revolution mechanical model, which has a fixed closed end and a free opened end. It obtains the natural frequency and vibration modes based on the theory of elasticity. The structural parameters are obtained from the orthogonal method by the research on the structural parameters of the resonator analysis. It obtains the modal analysis, stress analysis and impact analysis with the chosen parameters. Finally, using the turntable experiment verifies the gyro effect of the BVG.
Keywords: bell-shaped vibratory angular rate gyro; Coriolis vibratory gyro; bell-shaped resonator bell-shaped vibratory angular rate gyro; Coriolis vibratory gyro; bell-shaped resonator
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Su, Z.; Fu, M.; Li, Q.; Liu, N.; Liu, H. Research on Bell-Shaped Vibratory Angular Rate Gyro’s Character of Resonator. Sensors 2013, 13, 4724-4741.

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