A new dual-mass gyro is studied in this paper

for double-linear vibrational dual-mass MEMS gyroscopes are insensitive to the environment

and their differential outputs can effectively suppress the common mode interference. On the basis of the structure and the principle of operation

the driving modal of the dual-mass gyro is analyzed in theory

and the simplified dynamic equations are proposed. Then

the finite element software ANSYS is used to numerically simulate the driving modal

and a driving circuit is used to test the driving modal of a fabricated gyro sample. By using several loading methods in simulations and tests

the amplitude-frequency curves are obtained. These results are in agreement with the theory analysis

which shows that dual-side driving method is better than single-side driving one

and the opposite-direction driving method can drive a dual-mass gyro in working mode. Simulation and experiment results verify the driving-mode characteristics of this dual-mass micro-gyro.