T90 Inertial Measurement Unit

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Overview
The T90 high-precision inertial measurement unit uses a 90-type three-axis fiber optic gyroscope and a high-precision quartz flexural accelerometer as its core inertial components. It adopts a three-axis orthogonal configuration scheme and uses a high-precision error compensation algorithm to achieve high-precision measurement of the carrier's motion. It also transmits real-time measurement information such as angular rate and acceleration to the outside world through the communication port at a specified period.

Features
● High precision.
● Excellent start-up performance; it reaches the nominal specifications immediately upon power-on, without the need for preheating.
● Communication protocol is configurable: The communication protocol and baud rate can be set according to user needs.
● Excellent environmental adaptability and resistance to strong impact and vibration.
● Rich and reliable interface configuration: Equipped with digital communication interfaces such as RS422 and RS232 to meet the data interaction needs of multiple devices.
● High reliability.

Physics/Electricals
● External dimensions: 179.6mm × 179.6mm × 145mm
● Weight: Less than 6.0 kg
● Power supply: 12-32V DC power supply, nominal power supply voltage 24V
● Power consumption: Steady-state power consumption less than 18W
● External connector: J30JM-37ZKP

Environmental adaptability
● Operating temperature: -40 ℃ ~ +60 ℃
● Storage temperature: -55 ℃ ~ +80 ℃
● Vibration: 6.06g (RMS), 20Hz~2000Hz
● Impact: 30g, 6ms~8ms 

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Specifications

No.

Items

Parameter

1

Gyroscope measurement range

±1000°/s

2

Room temperature zero bias stability

0.01°/h (10s smoothing, 1σ)

0.003°/h (100s smoothing, 1σ)

0.001°/h (Allan variance)

3

Variable temperature zero bias stability

0.007°/h (100s smoothing, 1°C/min, 1σ)

4

Zero bias repeatability

0.003°/h

5

Random walk coefficient

0.0005°/√h

6

Scale factor Nonlinearity

5 ppm

7

Scale factor asymmetry

2ppm

8

Scale factor repeatability

5ppm

9

Accelerometer measurement range

±15g

10

Zero bias stability

20ug (normal temperature)/ 50μg (full temperature)

11

Zero bias repeatability

20ug (normal temperature)/50μg (full temperature)

12

Scale factor nonlinearity

20 ppm(1σ)

13

Scale factor monthly repeatability

30ppm(1σ)

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