Tuning Fork Gyroscope

deadmancrossingraceAI and Robotics

Nov 13, 2013 (3 years and 8 months ago)

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MEMS Commercial Tuning Fork Gyroscope
Draper Labs

M. Weinberg, J. Bernstein, S. Cho, A. T. King, A.
Kourepenis
, P
. Ward, and J.
Sohn
, “A
micromachined

comb
-
drive
tuning fork
gyroscope for commercial applications,” in
Proc.
Sensor Expo
, Cleveland, OH, 1994, pp. 187

193.

Area

ㅭ1
2

!

A Quartz Tuning Fork Gyroscope

Economy of Scale to Lower Cost

A Critical Review of MEMS Gyroscopes Technology and Commercialization Status

Steven
Nasiri
, 408
-
988
-
7339 x108, snasiri@invensense.com

3150A Coronado Drive, Santa Clara, California 95054

“..high volume occurred once unit prices achieved $3 target prices.”


Automotive: vehicle stability control, rollover detection,
navigation, load leveling/suspension control, event recording,
collision avoidance


Consumer: computer input devices, handheld computing devices,
game controllers, virtual reality gear, sports equipment,
camcorders, robots


Industrial: navigation of autonomous (robotic) guided vehicles,
motion control of hydraulic equipment or robots, platform
stabilization of heavy
machinery,human

transporters, yaw rate
control of wind
-
power plants


Aerospace/military: platform stabilization of avionics, stabilization
of pointing systems for antennas, unmanned air vehicles, or land
vehicles, inertial measurement units for inertial navigation


Applications

A Critical Review of MEMS Gyroscopes Technology and Commercialization Status

Steven
Nasiri
, 408
-
988
-
7339 x108, snasiri@invensense.com

3150A Coronado Drive, Santa Clara, California 95054

UI Research Project
-

Using AUVs to Measure
Magnetic Signature of Naval Vessels

IMU

DAU

Magnetometer

Archangel IM3

Data Resolution

Body Rates 0.0006
°
/second @ 200 Hz

Accelerations 50
μ
g @ 200 Hz

Data Accuracy

(Gyro IMU Mode) Random Walk 2.5
°
/√hour (C1)

5.2
°
/√hour (C2)

Bias Drift 15
°
/hour

Stability 50
°
/hr/year

Scale Factor Accuracy 0.1% of Full Scale

Scale Factor Drift 300
ppm
, 1 sigma

Cross Axis 0.13% maximum

Data Accuracy

(Accelerometer) Bias Drift 0.2 mg

Scale Factor Accuracy 0.10% of Full Scale

Scale Factor Drift 500
ppm
, 1 sigma

Cross Axis 0.13% maximum

Dynamic Range
-

C1
±
150
°
/s
±
10 g

(Linear)
-

C2
±
300
°
/s
±
10 g

Bandwidth

(3 db) Rates 40 Hz Maximum

Accelerations 50 Hz Maximum

IMU Specifications