1 Composition and function
The dual-axis MEMS gyroscope is composed of the MEMS gyroscope with independent intellectual property rights, its drive pickup circuit, temperature sensor, digital signal processing circuit, structure and necessary software, which is used to measure the angular rate of the two horizontal axes of the carrier in real time, and output the two angular rate information after error compensation through the RS-422 serial port according to the agreed communication protocol. Error compensation includes temperature compensation, misalignment angle compensation, nonlinear compensation, zero compensation and so on. The product has the characteristics of high precision, small size, light weight, impact resistance, electromagnetic interference resistance, etc. It can work reliably in harsh environments and can be widely used in attitude control (such as stabilized sighting system, satellite communication antenna attitude control, etc.).
Technical index of gyroscope
| Parameter | Unit | Test conditions | MG2-1 |
| Measuring range | °/s | | ±100 |
| Zero-bias instability | °/h | Allan variance | 1 |
| Zero bias stability | °/h | 1s smooth, RMS, normal temperature | 10 |
| Zero bias variation at full temperature | °/h | 10s smooth, RMS, temperature change rate 1 ℃/min | 20 |
| Random walk | °/√h | Allan variance | 0.15 |
| Zero-bias repeatability | °/h | Q = 6, normal temperature | 10 |
| Zero bias acceleration sensitivity | °/h/g | Test at ± 1 G | 2 |
| Resolution | °/h | | 2 |
| Output noise | °/s | Peak (Half Peak, RMS * 3) | 0.4 |
| 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 |
1.2.2 Electrical characteristics
| Parameter | Unit | MG2-1 |
| Voltage | V | +5±0.25 |
| Starting current | mA | <200 |
| Steady-state power consumption | W | <0.5 |
| Ripple | mV | 100 |
1.2.3 Environmental adaptability
| Parameter | Unit | MG2-1 |
| Operating temperature | ℃ | -45~85 |
| Storage temperature | ℃ | -55~ 105 |
1.2.4 Others
| Parameter | Unit | MG2-1 |
| Weight | g | 50 |
| Start time | s | <1 |
Outline Drawing
Product Tags:
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MEMS Dual-Axis Angular Rate Sensor for Navigation and Mapping Images
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