High Bandwidth Fiber Optic Gyroscopes High Accuracy Gyroscope Short
Activation TimeThis document specifies the requirements and methods
for the use and maintenance of FOG-60 fiber optic gyroscope
(product for short).Product introduction1 Working
principle, function and scope of application of the
produc1.1 How it works This product is an
inertial angular rate sensor based on the optical Sagnac effect,
which is used to measure the angular rate of the carrier along the
sensitive axis of the product. The angular rate 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 anticlockwise propagating light caused by the
external physical angular rate, 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 angular velocity signal
detection.1.2 Function This product is composed
of an optical angular velocity sensing unit and a signal detection
unit, providing single-axis angular increment information and
internal temperature information.1.3 Scope of
application The products are mainly suitable for applications such
as medium-precision inertial navigation systems, positioning and
orientation systems, and servo stabilization systems.2
Composition The main components of the product are as
follows: a) The optical path unit comprise an SLD
light source, an optical fiber re, an integrated optical phase
modulator, an optical fiber coupler and an optical detector;
b) The circuit unit comprises a light source
driving circuit and a detection and control signal circuit board;
c) Gyroscope structural parts.3
Appearance and installation dimension Overall dimension (mm):
(60 ± 0.1) × (60 ± 0.1) × (31 ± 0.1) (L × W × H); Installation
dimension (mm): (50 ± 0.1) × (50 ± 0.1) (L × W), Φ3.2mm × 4,such
asFigure 1 As shown.Main performanceparameters See the main
performance parameters of the product for details.Table 1 Main
performance parameters Serial numberTest itemUnitTechnical
requirements1Overall dimensionsmm60×60×312Start times53Zero bias
stability(10 s smoothing, 1σ)º/h≤0.14Zero-bias
repeatabilityº/h≤0.15Random walk coefficientº/h1/2≤0.016Scale
factor nonlinearityppm≤507Scale factor
repeatabilityppm≤508Operating temperatureºC-40~+7009Storage
temperatureºC-50~+7010Dynamic range(°)/s±100011Supply
voltageV+512Steady-state power consumptionW1.5AElectrical
connection interfaceCore point numberDefinitionComment1+5VPower
supply input2GNDPower ground3--Reserved4RXD+Gyro differential
sorting and correcting5TXD+Gyro RS422 output positive6+5VPower
supply input7GNDPower ground8RXD-Gyro differential gating
negative9TXD-Gyro RS422 output negative
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