As a high precision vibrating inertial instrument

MEMS ring gyroscope is sensitive to angular velocity based on the Coriolis Effect. However

the mismatch between the drive mode and the detection mode will affect its sensitivity

while the temperature will affect its stability. The dynamics equation of the imperfect ring and the theory of electrostatic tuning is analyzed

and the relationship between the scale factor and the resonant frequency is derived to analyze the influence of temperature on the scale factor. Then the scale-factor temperature drift model is built. Therefore

the mode mismatch caused by the anisotropy and fabrication defects of the ring gyroscope will be solved with the method of electrostatic tuning

and the scale factor will be compensated in the output of the system.Experiments indicate that the scale factor has increased by about 3 times after electrostatic tuning

and temperature offset has reduced from about ± 14 % at normal temperature to ± 3 %

which demonstrates the effectiveness of these methods.