QINGDAO THUNDSEA MARINE TECHNOLOGY CO.,LTD
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1 Introduction
Fiber optic inertial measurement unit is an inertial product developed for navigation and guidance, attitude measurement and control of small missiles and guided bombs, which is composed of three all-solid-state fiber optic gyroscope instruments, three quartz accelerometers and data packing board, etc. It measures the angular velocity and linear acceleration of carrier movement, and provides information for carrier attitude and navigation control. The measurement results are output via RS422 serial port.
1.1 Application scope
This manual is only applicable to F3X80-IMU type products, and contains performance indexes, technical conditions, external dimensions and installation and use. Among them, the technical conditions include the environmental range, electrical performance, and physical characteristics of the product.
1.2 Main parameters
1.2.1 Main performance indicators of fiber optic gyroscope instrument.
Table 1 The main performance indicators of the product
| fiber optic gyroscope instrument main performance indicators | Main index parameters | F3X80MI | F3X80LI |
| M type | L type | ||
| Room temperature zero drift repeatability(period by period, day by day)( º/ h) | ≤0.3 | ≤0.5 | |
| Zero stability at fixed temperature( º/ h) | ≤0.3 | ≤0.5 | |
| Room temperature scale factor repeatability ( ppm) | ≤30 | ≤30 | |
| Scale factor asymmetry at constant temperature (ppm) | ≤30 | ≤30 | |
| Scale factor non-linearity at constant temperature (ppm) | ≤30 | 50 | |
| Threshold value (º/ h) | ≤0.5º/ h | ||
| Angular rate range( º/s) | -500～+500 º/s | ||
| Bandwidth (Hz) | 100 | ||
| Dimension (mm) | Ф80*70 | ||
| Weight (g) | 780±20 (including accelerometer) | ||
| Operating temperature (℃) | -40～+65 | ||
Quartz accelerometer parameters
| Serial number | Item | Technical regulations |
| 1 | Range (g) | ≥±40 |
| 2 | scale factor temperature coefficient(ppm /℃) | ≤100 |
| 3 | scale factor monthly stability(ppm) | ≤100 |
| 4 | Bias value (mg) | ≤±7 |
| 5 | bias temperature factor (μg /℃) | ≤100 |
| 6 | Bias monthly stability (μg) | ≤100 |
| 7 | Second-order non-linearity factor (μg /g2) | ≤20 |
| 8 | Mounting angle (") | ≤200 |
| 9 | Appearance | No scratches, cracks, rusts |
| 10 | Insulation | ≥20MΩ; (100V),25℃±5℃, humidity≤80% |