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3DM-GX3™-25
Miniature Attitude Heading Reference System (AHRS)
Features and Benefits
- Smallest and lightest AHRS available on the market, with versions weighing only 11.5 grams
- Fully temperature compensated over entire -40° to +75°C operational range
- Calibrated for sensor misalignment, gyro G-sensitivity, and gyro scale factor non-linearity
- Improved navigation under vibration, as sensors are sampled at 30 kHz and digitally filtered and scaled into physical units; coning and sculling integrals are computed at 1 kHz
- Available with RS-232, USB 2.0 and TTL serial communication interfaces
- User adjustable data rate, 1 to 1000 Hz
- Outputs Euler angles, rotation matrix, deltaAngle & deltaVelocity, acceleration angular rate and magnetic field
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Introduction
3DM-GX3™-25 is a high-performance miniature Attitude Heading Reference System, utilizing MEMS sensor technology.
It combines a triaxial accelerometer, triaxial gyro, triaxial magnetometer, temperature sensors, and an on-board processor
running a sophisticated sensor fusion algorithm to provide static and dynamic orientation, and inertial measurements.
It offers a range of output data quantities from fully calibrated inertial measurements (acceleration, angular rate
and magnetic field or deltaAngle & deltaVelocity vectors) to computed orientation estimates, including pitch, roll and
heading (yaw) or rotation matrix. All quantities are fully temperature compensated and are mathematically aligned to an
orthogonal coordinate system. The angular rate quantities are further corrected for G-sensitivity and scale factor
non-linearity to third order.
The 3DM-GX3™-25 AHRS is available with RS-232, USB 2.0 and TTL serial communication interfaces and is a member
of the 3DM-GX3™ family of inertial sensors.
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Applications
Inertial aiding of GPS
Location tracking of personnel
Unmanned vehicles, navigation, artificial horizon
Computer science, biomedical animation, linkage free tracking/control
Platform stabilization
Antenna and camera pointing
Robotics
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Specifications
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Orientation range |
360° about all axes |
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Accelerometer range |
+/- 5 g standard
+/- 1.7 g, +/- 18 g, and +/- 50 g also available |
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Accelerometer bias stability |
+/- 0.005 g for +/- 5 g range
+/- 0.003 g for +/- 1.7 g range
+/- 0.010 g for +/- 18 g range
+/- 0.050 g for +/- 50 g range |
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Accelerometer nonlinearity |
0.2% |
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Gyro range |
+/- 300°/sec standard
+/- 1200°/sec, +/- 900°/sec, +/- 600°/sec, +/- 50°/sec also available |
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Gyro bias stability |
+/- 0.2°/sec for +/- 300°/sec |
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Gyro nonlinearity |
0.2% |
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Magnetometer range |
+/- 2.5 Gauss |
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Magnetometer nonlinearity |
0.4% |
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Magnetometer bias stability |
0.01 Gauss |
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A/D resolution |
16 bits (SAR)(oversampled to 17 bits) |
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Orientation Accuracy |
+/- 0.5° typical for static test conditions
+/- 2.0° typical for dynamic (cyclic) test conditions & for arbitrary orientation angles |
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Orientation resolution |
<0.1 |
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Repeatability |
0.2 |
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Output modes |
Acceleration, angular rate and magnetic field
DeltaAngle and deltaVelocity
Euler angles
Rotation matrix |
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Interface options |
Standard: USB 2.0 or RS232
OEM: USB 2.0 / TTL serial (3.3 volts) |
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Data rate |
1 to 1000 Hz |
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Filtering |
Sensors sampled at 30 kHz, digitally filtered (user adjustable ) and scaled into physical units;
Coning and sculling integrals computed at 1 kHz. |
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Baud rate |
115200 baud to 921,600 baud |
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Supply voltage |
Standard: 4.4 to 6 volts [up to 15 volts operation possible at limited temp range]
OEM: 3.2 to 5.5 volts |
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Power consumption |
80 mA @ 5 volts with USB |
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Connectors |
Standard: micro-DB9
OEM: Samtec FTSH-105-01-F-D-K |
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Operating temperature |
-40° to +75°C (consult factory for higher temperature operation) |
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Dimensions |
Standard: 44 mm x 25 mm x 11 mm - excluding mounting tabs, width across tabs 37 mm
OEM: 38 mm x 24 mm x 12 mm |
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Weight |
Standard: 18 grams RS-232 and USB
OEM: 11.5 grams |
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Shock limit |
1000g (unpowered), 500g (powered)
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*Accuracy and stability specifications obtained over operating temperatures of -40 to +70°C with known sine and step
inputs, including angular rates of +/- 300° per second.
Patent Pending
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General Documentation
Software Development Kit
Technical Notes
Mechanical Prints
FAQs
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3DM-GX3™-25 Miniature AHRS Starter Kits
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3DM-GX3-25 RS-232 Starter Kit
3DM-GX3-25-RS232-SK1
Includes
(1) 3DM-GX3-25-RS232/USB-M inertial measurement unit, (1)RS-232 communication cable, (1) power supply and software
Part Number: 6223-4221
Online price: $1895.00
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MicroStrain has identified your location as
United States. If this is incorrect please contact
sales at 802-862-6629 or sales@microstrain.com
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3DM-GX3-25 USB Starter Kit
3DM-GX3-25-USB-SK1
Includes
(1) 3DM-GX3-25-RS232/USB-M inertial measurement unit, (1) USB communication cable and software
Part Number: 6223-4241
Online price: $1895.00
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MicroStrain has identified your location as
United States. If this is incorrect please contact
sales at 802-862-6629 or sales@microstrain.com
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