Space engineers gyroscope11/26/2022 Because there is no moving part and suspending structure in a solid-state gyroscope, it is robust and has higher resistance to shock and shake. According to their working principle, these kinds of gyroscopes can be classified into two categories: one that has no vibration unit at all such as optical gyroscopes and atom gyroscope, the other that has only local vibration such as HRG (Hemispherical Resonant Gyro) and surface acoustic wave gyroscope. IntroductionÄifferent from the micromachined vibratory gyroscope, which has the structure of suspending springs and proof masses, some kinds of solid-state gyroscopes have no part which moves as a whole. The results obtained in this paper provide theoretical basis for realizing this novel kind of micromachined gyroscope. At last, the Coriolis analysis was conducted to show the relation between angular velocity and differential output voltage by the Coriolis force under working condition. The optimal configuration of driving electrodes was obtained. By FEM, the harmonic analysis was conducted to find the way to efficiently actuate the operational mode needed. A set of quantitative indicators were developed to optimize the operation mode. The modal analysis by the finite element method (FEM) was firstly conducted. This work focused on quantitative optimization of the gyroscope, which is still blank for such gyroscope. PMMG has large stiffness and robust resistance to shake and strike because there is no evident mass-spring component in its structure. This paper reports a novel kind of solid-state microgyroscope, which is called piezoelectric micromachined modal gyroscope (PMMG).
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