, which has achieved inertial navigation performance levels and been used for spacecraft stabilization, precision pointing, aircraft navigation and strategic accuracy systems. The hemispherical resonator gyroscope (HRG) was developed rapidly in Delco, Litton, and Northrop Grumman Co. These structures are always activated and sensed by methods, including electromagnetics, electrostatics and piezoelectricity. Symmetric vibratory structures with piezoelectric, magnetic or electrostatic actuators are widely used in vibratory gyroscopes, such as hemispherical resonator gyros (HRG), cylindrical resonant gyros (CRG), disk resonant gyros (DRG) and so on. Axisymmetric vibratory structures with piezoelectric, magnetic or electrostatic actuators are widely used in vibratory gyroscopes, such as hemispherical resonator gyros (HRG), cylindrical resonant gyros (CRG), disk resonant gyros (DRG) and so on. Keywords: bell-shaped vibratory angular rate gyro Coriolis vibratory gyro bell-shaped resonatorĪ solid-state wave gyroscope can be used to measure the angular velocity of a rotating body based on the inertia effect of the standing wave in two vibration modes of the axisymmetric resonator, which have advantages, such as small size, high operation accuracy, low cost, low power consumption, good shock resistance, and long life.
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Finally, using the turntable experiment verifies the gyro effect of the BVG. It obtains the modal analysis, stress analysis and impact analysis with the chosen parameters. The structural parameters are obtained from the orthogonal method by the research on the structural parameters of the resonator analysis. It obtains the natural frequency and vibration modes based on the theory of elasticity.
#Piezo electric gyros free
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. Using the current solid vibration gyro theory analyzes the structural characteristics and principles of BVG. The reasonable structural parameters are obtained from finite element analysis and an intelligent platform. The main work is as follows: the issue mainly analyzes the structure and basic principle, and investigates the bell-shaped resonator's mathematical model. It can be widely applied in high dynamic low precision angular rate measurement occasions. 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. Its characteristics can directly influence the performance of BVG. The resonator fuses based on a variable thickness axisymmetric multicurved surface shell. Received: 6 February 2013 in revised form: 20 March 2013 / Accepted: 21 March 2013 / Published: 10 April 2013Ībstract: Bell-shaped vibratory angular rate gyro (abbreviated as BVG) is a new type Coriolis vibratory gyro that was inspired by Chinese traditional clocks. Zhong Su 12 *, Mengyin Fu 2, Qing Li1, Ning Liu 12 and Hong Liu 12ġ Institute of Intelligent Control, Beijing Information Science & Technological University, Beijing 100101, China E-Mails: (Q.L.) (N.L.) (H.L.)Ģ School of Automation, Beijing Institute of Technology, Beijing 100084, China E-Mail: Author to whom correspondence should be addressed E-Mail: Tel./Fax: +86-10-6488-4344.
Research on Bell-Shaped Vibratory Angular Rate Gyro's Character of Resonator
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