1.1 Composition and function
The inertial measurement unit consists of three-axis gyroscope, three-axis acceleration meter, three-axis tilt angle (without this sensor by default), temperature sensor, signal processing board, structure and necessary software, and is used to measure the three-axis angular rate, three-axis acceleration and three-axis tilt angle of the carrier. And output the gyro, accelerometer and inclination data after error compensation (including temperature compensation, installation misalignment angle compensation, nonlinear compensation and etc) through an RS-422 serial port according to an agreed communication protocol.
1.2 Main technical parameters
1.2.1 Gyroscope technical index
| Parameter | Unit | Test conditions | IMU6-4 | IMU6-4A | IMU6-4B | IMU6-4C |
| Measuring range | °/s | | ±400 | ±400 | ±400 | ±2000 |
| Zero-bias instability | °/h | Allan variance | 1 | 0.1 | 0. 05 | 3 |
| Zero bias stability | °/h | 1s smooth, RMS, normal temperature | 10 | 5 | 1 | 20 |
| Zero bias variation at full temperature | °/h | 10s smooth, RMS, temperature change rate 1 ℃/min | 20 | 10 | 2 | 40 |
| Random walk | ./√h | Allan variance | 0.15 | 0.05 | 0.02 | 0.3 |
| Zero-bias repeatability | °/h | Q = 6, normal temperature | 10 | 5 | 1 | 20 |
| Zero bias acceleration sensitivity | °/h/g | Test at ± 1 g | 1 | 1 | 1 | 1 |
| Resolution | °/h | | 2 | 1 | 0.5 | 5 |
| Output noise | °/s | Peak (half peak, STD * 3) | 0.3 | 0.25 | 0.15 | 0.45 |
| Scale factor nonlinearity | ppm | Normal temperature | 300 |
| Scale factor repeatability | ppm | Q = 3, normal temperature | 300 |
| Cross coupling | % | Normal temperature | 0.2 |
| Bandwidth | Hz | | 250 | 250 | 150 | 250 |
1.2.2 Accelerometer technical index
| Parameter | Unit | Test conditions | IMU6-4y-1 | IMU6-4y-2 | IMU6-4y |
|
| Measuring range | g | | ±10 | ±20 | ±40 |
|
| Zero bias stability | mg | 1s smooth, RMS, normal temperature | 0.1 | 0.2 | 0.3 |
| Zero bias variation at full temperature | mg | 10s smooth, RMS, temperature change rate 1 ℃/min | 3 | 3 | 5 |
|
| Zero-bias repeatability | mg | Q = 6, normal temperature | 0.2 | 0.5 | 1 |
| Resolution | mg | | 0.1 | 0.1 | 0.1 |
|
| Scale factor nonlinearity | ppm | Normal temperature | 500 |
| Scale factor repeatability | ppm | Q = 3, normal temperature | 500 |
| Cross coupling | % | Normal temperature | 0.2 |
| Bandwidth | Hz | | 150 |
1.2.3 Inclination angle technical index
| Parameter | Unit | IMU6-4y-x |
| Measuring range | g | ±1.7 |
| Zero-bias stability (1s smoothing) | mg | 0.5 |
| Scale factor nonlinearity | ppm | 500 |
1.2.4 Electrical characteristics
| Parameter | Unit | IMU6-4y |
| Voltage | V | +5±0.5 |
| Starting current | mA | <400 |
| Steady-state power consumption | W | <1.2 |
| Ripple | mV | 100 |
1.2.5 Environmental adaptability
| Parameter | Unit | IMU6-4y-x |
| Operating temperature | ℃ | -45~85 |
| Storage temperature | ℃ | -55~105 |
1.2.6 Others
| Parameter | Unit | IMU6-4y-x |
| Weight | g | 55±5 |
| Start time | s | 1 |
Outline drawing
Product Tags:
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Navigation Grade MEMS IMU with 3 Axis Accelerometer Gyroscope Images
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