mems gyroscope working, principle of operation of disc resonator gyroscope

14
MEMS Gyroscope ANKUSH WAWOO (33)

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MEMS gyroscope, working, principle of operation, example, applications, description of disc resonator gyroscope, mechatronics

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Page 1: Mems gyroscope working, principle of operation of disc resonator gyroscope

MEMS GyroscopeMEMS Gyroscope

ANKUSH WAWOO (33)ANKUSH WAWOO (33)

Page 2: Mems gyroscope working, principle of operation of disc resonator gyroscope

WHAT ARE MEMS GYROSCOPEWHAT ARE MEMS GYROSCOPE

• Your Description Goes Here

A gyroscope is

a device for

measuring or

maintaining

orientation.

Page 3: Mems gyroscope working, principle of operation of disc resonator gyroscope

FEW TERMSFEW TERMS

Page 4: Mems gyroscope working, principle of operation of disc resonator gyroscope

THE CORIOLIS EFFECTTHE CORIOLIS EFFECT

Page 5: Mems gyroscope working, principle of operation of disc resonator gyroscope

Vibrating structure gyroscopeVibrating structure gyroscope

• Piezoelectric gyroscopes• Wine-glass resonator• Cylindrical resonator

gyroscope (CRG)• Tuning fork gyroscope• Vibrating wheel gyroscope or

Disc resonator gyroscope (DRG)

TYPES

Page 6: Mems gyroscope working, principle of operation of disc resonator gyroscope

APPLICATIONSAPPLICATIONS

Page 7: Mems gyroscope working, principle of operation of disc resonator gyroscope

Disc Resonating Gyro Basics

Disc Resonating Gyro Basics

Page 8: Mems gyroscope working, principle of operation of disc resonator gyroscope

Operation Principle of the DRG

Operation Principle of the DRG

• Gyroscope is driven to resonate in-plane

• Electrodes sense deflection in outer ring sockets

• Electrodes actuate in inner ring sockets

• Circuits process the signal and feedback into the system

A vibrating object tends to continue vibrating in the same plane as its support rotates.

Page 9: Mems gyroscope working, principle of operation of disc resonator gyroscope
Page 10: Mems gyroscope working, principle of operation of disc resonator gyroscope

Coriolis Effect Coriolis Effect

• Coriolis acceleration (a) occurs if a resonating disc is perturbed

• Depends on velocities on the disc higher frequencies allow Coriolis acceleration to dominate centrifugal acceleration

• Coriolis acceleration is what the electrodes sense through change in capacitance

Page 11: Mems gyroscope working, principle of operation of disc resonator gyroscope

How Does the DRG Work?How Does the DRG Work?

• DC Source creates an electrostatic force that moves the disc

• Proper control of these electrodes can put the system into resonance

• Similarly, the sensing electrodes use gap changes to gauge system changes

Page 12: Mems gyroscope working, principle of operation of disc resonator gyroscope

Ideal GyroIdeal Gyro

• High-Q (energy dissipation)

• Large S/N ratio• Low-cost• Small (1 cm3)• Reliable• Requiring low power

Page 13: Mems gyroscope working, principle of operation of disc resonator gyroscope

AdvantagesAdvantages

• GRG has large sensing area compared to other gyros

• Easy to package• Multiple sensing and driving

electrodes can make it easier to operate and read

• MEMS gyroscopes desirable because they are lightweight and cheaper to produce

Page 14: Mems gyroscope working, principle of operation of disc resonator gyroscope

THANK YOU !!!