Coupling error is one of the main error sources of the quartz tuning fork gyroscope. The mechanism of capacitance
coupling error is analyzed in this article. Finite Element Method (FEM) is used to simulate the structure of the
quartz tuning fork by ANSYS software. The voltage output induced by the capacitance coupling is simulated with
the harmonic analysis and characteristics of electrical and mechanical parameters influenced by the capacitance
coupling between drive electrodes and sense electrodes are discussed with the transient analysis.