Mems gyroscope working, principle of operation of disc resonator gyroscope

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

1. MEMS Gyroscope ANKUSH WAWOO (33)

2. WHAT ARE MEMS GYROSCOPE Your Description Goes Here A gyroscope is a device for measuring or maintaining orientation.

3. FEW TERMS

4. THE CORIOLIS EFFECT

5. Vibrating structure gyroscope Piezoelectric gyroscopes Wine-glass resonator Cylindrical resonator gyroscope (CRG) Tuning fork gyroscope Vibrating wheel gyroscope or Disc resonator gyroscope (DRG) TYPES

6. APPLICATIONS

7. Disc Resonating Gyro Basics

8. 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.

9. 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

10. 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

11. Ideal Gyro High-Q (energy dissipation) Large S/N ratio Low-cost Small (1 cm 3 ) Reliable Requiring low power

12. Advantages 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

13. THANK YOU !!!