T50 Series High Precision Laser Gyroscope can provide high, medium, and low precision options. The product has the characteristics of small size, light weight, stable and reliable performance, and is widely used in navigation systems, radar tracking and positioning systems, unmanned aerial vehicles, ship autonomous driving, and air platform attitude stability.
● Accuracy:<0.015°-0.005°/h
● Zero-bias repeatability:<0.0020°/h
● Random walk coefficient:<0.0015 /h
The T50 Series High Precision Laser Gyroscope has the advantages of fast start-up, low power consumption, good scale factor stability, strong resistance to impact overload, and insensitivity to temperature and electromagnetic fields. At the same time, it also has outstanding features such as small size, light weight, and low cost. It is mainly used in low, medium, and high-precision fields, including assisting medium range navigation, various tactical missiles, long-range weapons (rockets, etc.), unmanned small aerial vehicles, torpedoes, various intelligent ammunition, tanks, and special civilian vehicles.
| Model | STA-LG-T50A | STA-LG-T50B | STA-LG-T50C | STA-LG-T50D |
| Accuracy | <0.015° / h | <0.01° / h | <0.007° / h | <0.005° / h |
| Power supply | + 15V, 150 mA, start transient 500 mA | |||
| +5V，≥200 mA | ||||
| The ripple of each power supply above is <100 mVp-p | ||||
| Natural frequency of jitter | type A, 710~730Hz | |||
| Type B range from 660 to 680 Hz | ||||
| Type C forms ranged from 610 to 630 Hz | ||||
| Scale factor | 3.42 angle s / pulse (original pulse), 1.71 angular s / pulse (2 x frequency) | |||
| Scale factor error | (repeatability, nonlinearity): <5ppm | |||
| Zero-bias repeatability | <0.0020° / h | |||
| Random walk coefficient | <0.0015 ° / h | |||
| Magnetic sensitivity | <0.0025° / h / Gs | |||
| Temperature sensitivity | <0.06° / h (extremely poor full temperature range) | |||
| Life | > 45,000 hours (powered on);> 25 years (storage) | |||
| Random vibration | 8 grms (working normally, slightly reduced accuracy), 18 grms (no damage) | |||
| Overload | > 60g (working normally, zero bias slightly increased) | |||
| Operating temperature | (-40~ + 70) ℃ | |||
| Storage temperature | (-50~ + 75) ℃ | |||
| Temperature change rate | it is recommended not to exceed 5℃ / min, and can withstand hundreds of temperature cycles without damage | |||
| One continuous working time | more than 24h | |||
| Start time | less than 10s | |||
| Input shaft error angle | <7' | |||
Overall dimension: 84mm 74.5mm 51mm (error ± 1mm, excluding socket);
Installation form 1:75.5mm 66mm (error ± 0.1mm), front through-hole installation, four φ 3.3 through-holes.
Installation form 2: four M4 thread holes on the bottom φ 40 ± 0.1
Gyro weight: 620g, the center of gravity of the gyroscope approximately coincides with the geometric center of the installation.
The interface adopts 25-core electric connector MDM-25SM3 (the matching connector can use Shaanxi Huada connector: MDM-25 PL 5) to connect power supply, digital output signal and internal temperature sensor. Input DC power supply includes + 15V, + 5V. The output signal is a digital signal of two TTL levels, which is connected to the phase authentication, demodulation and counting circuit. At the same time, the serial port output shakes the pulse results after filtering. There are two platinum resistance temperature sensors inside, and the temperature value of platinum resistance at different points inside can be determined by measuring the resistance value of platinum resistance, and real-time temperature compensation can be made when necessary.
For the specific interface point number definition, see the table below.
Table 3.1 Electrical point number interface
| MDM-25SM3 | punctuation mark | remarks | |
| +15V | 1，14 | Power 1 | |
| +15GND | 2，15 | ||
| 5VGND | 4，17 | Power supply 2 | |
| +5V | 6，19 | ||
| AOUT | 8，21 | output signal | |
| BOUT | 9，22 | ||
| ABGND | 23 | ||
| TCOM | 11 | Temperature measurement platinum resistance | common port |
| TMP1 | 12 | Near the anode | |
| TMP2 | 13 | Gyro box wall | |
| T+ | 3 | RS422 output | |
| T- | 16 | ||
| R- | 5 | ||
| R+ | 18 | ||
| SYNCH | 25 | synch | |
Note:
1. Other points are 10,24, which are reserved test points and should be suspended;
2.RS422 and TTL square wave output two modes.
The following is the current RS422 communication protocol, which can be added or modified according to customer needs.
1) Paud rate: 460,800 bps;
2) Data format: 8bit data bit, 1bit start bit, 1bit stop bit, no check;
.015633) The sending frame format of the data is as follows in the following table, in which 1 frame data is 9 bytes, the first byte is the frame head, B1 and B 0 is the high pressure glow state, B0 represents the steady frequency working state; D31~D0 is the gyro data represented by binary complement, multiplication factor 0 is the output pulse number; L13~L0 is the light intensity data with binary complement in 0.01V, byte 9 is frame check, the difference of the first 8 bytes.
Table 4.1 Current data frame format of the communication protocol
| Frame head | 1 | 0 | 0 | 0 | 0 | 0 | B1 | B 0 |
| High 8 | 0 | 0 | 0 | 0 | D31 | D30 | D29 | D28 |
| In 8 | 0 | D27 | D26 | D25 | D24 | D23 | D22 | D21 |
| In 8 | 0 | D20 | D19 | D18 | D17 | D16 | D15 | D14 |
| In 8 | 0 | D13 | D12 | D11 | D10 | D9 | D8 | D7 |
| In 8 | 0 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
| In 8 | 0 | L 13 | L 12 | L 11 | L 10 | L 9 | L 8 | L 7 |
| Low 8 | 0 | L 6 | L 5 | L 4 | L 3 | L 2 | L 1 | L 0 |
| Frame check | 0 | C6 | C5 | C4 | C3 | C2 | C1 | C0 |
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