WANG Zhenjun, HE Hanhui, LI Wei, et al. Research on influence of surface metallization on quality factor of micro hemispherical gyroscope[J]. 2019, 38(9): 6-8.
WANG Zhenjun, HE Hanhui, LI Wei, et al. Research on influence of surface metallization on quality factor of micro hemispherical gyroscope[J]. 2019, 38(9): 6-8. DOI: 10.13873/J.1000-9787(2019)09-0006-03.
Fused silica resonant structure is core component of micro hemisphere resonant gyroscope. In order to meet application needs of gyroscope
it is necessary to process the fused silica resonant structure with some metal materials to enhance its electrical conductivity. Software COMSOL is used to simulate and analyze the thermoelastic dissipation of resonant structure. The result shows that the surface metal layer will greatly increase the thermoelastic dissipation of resonant structure and the influence will increase with thicker surface metal layer.At the same time
the same batch of micro hemisphere resonant structure after metallized are tested and annealed.The result shows the quality factor of the resonant structure is improved obviously after annealing