Navigation Grade MEMS IMU with 3-Axis Accelerometer & Gyroscope
Composition and Function
The inertial measurement unit integrates multiple precision sensors and processing components:
- Three-axis gyroscope for angular rate measurement
- Three-axis accelerometer for acceleration measurement
- Three-axis tilt angle sensor (optional)
- Temperature sensor for environmental compensation
- Signal processing board with advanced algorithms
- Robust mechanical structure
- Comprehensive software suite
The system measures three-axis angular rate, acceleration, and tilt angle of the carrier, then outputs compensated data (including temperature compensation, installation misalignment compensation, and nonlinear compensation) through an RS-422 serial port using standardized communication protocols.
Gyroscope Technical Specifications
| 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 |
Accelerometer Technical Specifications
| 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 |
Inclination Angle Technical Specifications
| Parameter |
Unit |
IMU6-4y-x |
| Measuring range |
g |
±1.7 |
| Zero-bias stability (1s smoothing) |
mg |
0.5 |
| Scale factor nonlinearity |
ppm |
500 |
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 |
Environmental Adaptability
| Parameter |
Unit |
IMU6-4y-x |
| Operating temperature |
℃ |
-45~85 |
| Storage temperature |
℃ |
-55~105 |
Additional Specifications
| Parameter |
Unit |
IMU6-4y-x |
| Weight |
g |
55±5 |
| Start time |
s |
1 |
Outline Drawing
![Navigation Grade MEMS IMU outline drawing and dimensional specifications]()
