Design and simulation of novel MEMS resonant gyroscope
Guo Zhan-she
Abstract
Guo Zhan-she
Abstract
A novel silicon microelectromechanical(MEMS) resonant gyroscope was presented.Its advantages include a quasi-digital FM(frequency modulation) output,high sensitivity,high linearity,self-decoupled,etc.The structure includes proof masses,cantilevers,two-stage amplifying leverage mechanisms,double-ended tuning fork(DETF),driving and sensing combs.Two-stage amplifying leverage mechanisms,outboard masses,frame construction etc are used to improve the performance of the structure.The simulation results show that the sensitivity of the gyroscope is 0.309 Hz/(deg·s-1),and the maximum relative deviation is 9.4×10-8 on the measurement range(±300deg/s).In the driven direction,the amplitude of DETF is 2.96×10-6 times as big as its of the external mass.This shows that it has excellent decoupling capability.
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A novel silicon microelectromechanical(MEMS) resonant gyroscope was presented.Its advantages include a quasi-digital FM(frequency modulation) output,high sensitivity,high linearity,self-decoupled,etc.The structure includes proof masses,cantilevers,two-stage amplifying leverage mechanisms,double-ended tuning fork(DETF),driving and sensing combs.Two-stage amplifying leverage mechanisms,outboard masses,frame construction etc are used to improve the performance of the structure.The simulation results show that the sensitivity of the gyroscope is 0.309 Hz/(deg·s-1),and the maximum relative deviation is 9.4×10-8 on the measurement range(±300deg/s).In the driven direction,the amplitude of DETF is 2.96×10-6 times as big as its of the external mass.This shows that it has excellent decoupling capability.
Key concepts: Tuning fork, Vibrating structure gyroscope, Gyroscope, Proof mass, Microelectromechanical systems, Decoupling (probability), Amplitude, Linearity