inertial angular rate sensor based on the optical Sagnac effect 3 axes FOG fiber optic gyro sensor
This product is an inertial angular rate sensor based on the optical Sagnac effect, which is used to measure the angular velocity of the carrier along the sensitive axis of the product. The angular velocity sensing unit of the product is an optical fiber ring, and a digital closed-loop detection circuit is adopted to extract the optical path difference of clockwise and counterclockwise propagation light caused by the external physical angular velocity, which is sensed by the optical fiber ring,At the same time, the voltage signal converted from the optical path difference signal is used for closed-loop feedback and control to realize the modulation and demodulation of the signal and achieve the purpose of high-precision angular velocity signal detection.
Performance Characteristics
| No. | Test item | Unit | Technical requirements |
| 1 | Start time | min | Power-on bias stability index |
| 2 | Zero bias stability | (°)/h | ≤ 0.05 (10s smoothing)≤ 0.015 (100s smoothing) |
| 3 | Zero bias stability at full temperature(1 ℃/min variable temperature, 100 s average) | (°)/h | ≤0.08 |
| 4 | Zero-bias repeatability | (°)/h | ≤0.015 |
| 5 | Random walk coefficient | (º)/h1/2 | ≤0.003 |
| 6 | Scale factor nonlinearity | ppm | ≤20 |
| 7 | Scale factor asymmetry | ppm | ≤5 |
| 8 | Scale factor repeatability | ppm | ≤10 |
| 9 | Scale factor repeatability (full temperature) | ppm | ≤50 |
| 10 | Operating temperature | ℃ | -40~+60 |
| 11 | Storage temperature | ℃ | -50~+70 |
| 12 | Dynamic range | (°)/s | ±500 |
| 13 | Supply voltage | V | +5V |
| 14 | Steady state power consumption (full temperature) | W | ＜4 |
