Patent ID: 10132632

Abstract:
The present invention relates to a micromachined hemispherical resonance gyroscope, which includes a resonant layer, wherein the resonant layer comprises a hemispherical shell whose top point of the hemispherical shell is its anchor point; several silicon hemispherical electrodes are arranged around the hemispherical shell, the silicon hemispherical electrodes include driving electrodes, equilibrium electrodes, shielded electrodes and signal detection electrodes or quadrature correction electrodes, the hemispherical shell and the several silicon spherical electrodes which surround the hemispherical shell constitute several capacitors. The hemispherical resonance micromechanical gyroscope utilizes a processing method on the basis of silicon micromachining, which leads to small size and low production cost, as well as batch production capacity, meanwhile its sensitivity is independent of amplitude and its driving voltage could be very low, as a result its output noise could be significantly reduced, and its accuracy is better than the gyroscope products in the prior art.