DG-20B dual-axis fiber optic gyroscope
High-precision gyroscope;Zero bias stability ≤ 0.3°/h;Dimensions
(mm) 64x60x40;Weight (g) ≤ 220
DG-20B dual-axis fiber optic gyroscope
| Indicators | Model | DG-20B |
| Performance indicators | bias stability① (°/h, 1σ) | 0.3 |
| bias stability② (°/h,full temperature, 1σ) | 1 |
| bias repeatability(°/h, 1σ) | 0.3 |
| random walk(°/h 1/2) | 0.02 |
| scale factor nonlinearity(ppm) | 50 |
| scale factor asymmetry(ppm) | 10 |
| scale factor repeatability(ppm) | 20 |
| dynamic range(°/s) | ±500 |
| Mechanical/electrical interface | size(mm) | 64×60×40 |
| weight(g) | 200±10 |
| steady state power consumption at normal temperature(W) | 3 |
| power supply(V) | +5 |
| communication interface | RS422 |
Remarks: - Static test at room temperature, 10s smooth, 1σ;
- The temperature change rate is 1℃/min, smooth for 100s, 1σ.
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◾ Product introduction
DG-20B dual-axis fiber optic gyroscope is a full solid-state
high-precision digital closed-loop medium and low uniaxial fiber
optic gyroscope integrating optics, mechanics and electricity.
Based on the principle of Sagnac, it is composed of SLD light
source, fiber coupler, photodetector, integrated optical phase
modulator, fiber sensing ring, circuit and structure.
It is specially designed for the servo stable platform, and has the
characteristics of small volume, high update rate, low delay, low
noise, high bandwidth and so on. It is an ideal choice for low- and
medium-precision angular rate sensors, and can be widely used in
various types of stable platforms.
◾ Product features
• Single 5V power supply, extremely low power consumption
• Excellent all-temperature performance
• Excellent start-up performance, the nominal index can be reached
when the power is turned on, and no preheating is required
• Excellent environmental adaptability, strong Impact and vibration
resistance
• Interference fringe recognition technology, supporting full
dynamic range cold start
• High reliability
• No dead zone
◾ Typical applications
• Photoelectric platform
• Radar stabilization platform
• Satcom on the move system
• Seeker
• Scouting camera
◾Performance indicators
• Turn-on time (s) 3
• Dynamic range (°/s) ±500
• Zero position (°/h) ≤1
• Bias stability① (°/h , 1σ) ≤0.3
• Bias stability② (°/h , 1σ) ≤1
• Bias repeatability (°/h , 1σ) ≤0.3
• Random walk (°/h 1/2) ≤0.05
• Scale factor nonlinearity (ppm) ≤50
• Scale factor asymmetry (ppm) ≤10
• Scale factor repeatability (ppm) ≤20
• Threshold (°/h) ≤0.3
• Resolution (°/h) ≤0.3
• Bandwidth (Hz) ≥500
◾Physical/Electrical
• Power supply +5V
• Steady-state power consumption ≤3W
• Steady-state power consumption at full temperature ≤4W
• Instantaneous power consumption at startup ≤4W
• Dimensions 64㎜×60㎜×40㎜
• Weight 200g±10g
• Electrical form RS422
◾Environmental adaptability
• Operating temperature -45℃ - +70℃
• Storage temperature -55℃ - +80℃
• Vibration 6.06g (RMS), 20Hz-2000Hz
• Impact 30g, 6ms-8ms
• Average trouble-free time 8000h
