| 摘要 |
<p>The invention relates to a gyrometer having a vibrating structure and including at least one tuning fork, which is made by means of micromachining into a thin plate, said tuning fork including a pair of inertial mobile assemblies (EIM1, EIM2) connected by means of a coupling assembly (1). A tuning fork includes two controlled electrodes (9, 9') for electrostatically balancing the detection resonator along the detection axis y, respectively associated with the two inertial mobile assemblies (EIM1, EIM2) of said tuning fork, and control means (UCE) suitable for applying two respective DC electric voltages V1 and V2 to said two electrodes (9, 9') complying with the equation (I), in which c y_initiale is the initial sensitivity of the gyrometer, when the two electric voltages V1 and V2 are equal to zero, to linear accelerations along the detection axis y in deg.h-1.G-1, a is a coefficient characterizing the influence of a stiffness deviation between the two branches of the tuning fork on the sensitivity of the gyrometer to linear accelerations along the axis y in deg.h-1.G-1.N-1.m, ? is an electrostatic stiffness coefficient depending on said two electrodes (9, 9') in N. m-1. V-2, V1 and V2 are expressed in Volts, and G is 9.81 m. s-2.</p> |
