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Description
- Attitude and Heading Reference System
- Contains a three-axis accelerometer
- ±2000°/s (gyro), ±8 g (accelerometer), ±12 gauss (magnetometer)
- Maximum logic voltage: 3.3V
- Combines this data using an Extended Kalman Filter
The UM7 Orientation Sensor is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates.
- Size: 1.09″ × 1.12″ × 0.37″
- Weight: 7.5 g
- Interface: TTL serial, SPI
- Minimum operating voltage: 4 V
- Maximum operating voltage: 5.5 V
- Maximum logic voltage: 3.3 V2
- Axes: pitch (x), roll (y), and yaw (z)
- Measurement range:
- ±2000°/s (gyro)
- ±8 g (accelerometer)
- ±12 gauss (magnetometer)
- Supply current: 50 mA
- Case/enclosure: Y
Sensors and processing
- Excellent gyro bias stability over temperature
- Adjustable low-pass filter and EKF settings provide customizable performance for various applications
- States and sensor data synchronized to GPS position and velocity using optional external GPS module
- Allows for alignment calibration and third-order bias and scale factor temperature compensation for accelerometers, gyros, and magnetometer
- Magnetometer soft and hard-iron calibration can be performed through the serial interface software
Attitude and heading
- EKF estimation rate: 500 Hz
- ±1° typical static pitch/roll accuracy
- ±3° typical dynamic pitch/roll accuracy
- ±3° typical static yaw accuracy
- ±5° typical dynamic yaw accuracy
- 0.5° angle repeatability
- 0.01° angular resolution