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Analysis of metallic hemispherical shell vibration modes for coriolis vibratory gyroscope

机译:科里奥利振动陀螺金属半球壳振动模式分析

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Gyroscope is an instrument widely used in the navigation systems for sensing inertial angular motion. One of the principle of Gyroscope is Coriolis Vibrating Gyroscope (CVG), which is simple and easy to operate. It is realized during the development of the CVG that it is most suitable inertial sensor for aerospace applications. In this paper, a novel method for high reliable gyroscope application is demonstrated to verify the 'Mode 2' vibration pattern of vibrating hemispherical metallic shell. A parallel plate capacitor arrangement is made by placing discrete metallic plates around the metallic shell to study the vibration mode pattern. The shell vibrating at this particular mode, flexes along the axial direction of capacitor. The air gap of the parallel plate capacitor changes as the shell vibrates. The 'Mode 2' vibration pattern from the shell is confirmed by studying the phase relation at different capacitor locations.
机译:陀螺仪是用于传感惯性角度运动的导航系统中广泛使用的乐器。陀螺仪原理之一是科里奥利振动陀螺仪(CVG),简单易操作。在开发CVG期间实现它是航空航天应用的最合适的惯性传感器。在本文中,对高可靠性陀螺仪应用的新方法进行了说明,以验证振动半球形金属壳的“模式2”振动模式。通过将离散的金属板围绕金属壳放置以研究振动模式图案来制造平行板电容器装置。在这种特定模式下振动的壳体沿电容器的轴向弯曲。平行板电容器的气隙随着壳振动而变化。通过在不同电容器位置处的相位关系来确认来自外壳的“模式2”振动模式。

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