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Optical fiber IMU total-temperature calibration compensation method

A compensation method and temperature compensation technology, which is applied in the fields of inertial measurement and navigation, can solve the problems of high performance requirements for calibration test equipment and the inability to meet low-cost calibration, and achieve the effect of reducing test equipment costs, reducing test costs, and high precision

Active Publication Date: 2019-01-08
XIAN MICROELECTRONICS TECH INST
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Problems solved by technology

This design has high performance requirements for the calibration test equipment and cannot meet the needs of low-cost calibration

Method used

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  • Optical fiber IMU total-temperature calibration compensation method
  • Optical fiber IMU total-temperature calibration compensation method
  • Optical fiber IMU total-temperature calibration compensation method

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Embodiment Construction

[0053] see figure 1 , the present invention provides an optical fiber IMU full temperature calibration compensation method, including constant temperature calibration compensation, accumulative zero bias and scale coefficient temperature compensation, and gyro zero bias temperature compensation. The accuracy requirements of the navigation control system, on the other hand, can ensure that the full temperature calibration compensation is completed by using low-cost low-performance calibration equipment under the environmental conditions that cannot meet the high-performance calibration. Specific steps are as follows:

[0054] S1, fixed temperature calibration compensation

[0055] The traditional multi-position method is used to realize the constant temperature calibration compensation of the accumulator; the traditional angular position method is used to realize the calibration coefficient calibration compensation of the gyroscope; the traditional multi-position method is use...

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Abstract

The invention discloses an optical fiber IMU total-temperature calibration compensation method. The optical fiber IMU total-temperature calibration compensation method comprises the following steps: finishing normal-temperature calibration compensation of an optical fiber IMU, and then carrying out zero offset of casting and scale coefficient temperature compensation by using a casting six-position variable-temperature compensation method; and then carrying out zero offset compensation of a gyroscope by using a gyroscope six-position fixed-temperature-point compensation method, and finally finishing total-temperature calibration compensation of the optical fiber IMU. High-precision total-temperature calibration compensation of the optical fiber IMU can be finished by low-precision calibration equipment, costs of test equipment are reduced, the compensation precision is improved, and a solution is provided for low cost and high precision of a guidance control system.

Description

technical field [0001] The invention belongs to the technical field of inertial measurement and navigation, and in particular relates to an optical fiber IMU full temperature calibration compensation method. Background technique [0002] With the upgrading of weapon system's requirements for rapidity, strike accuracy, and low cost, the navigation control system has higher and higher requirements for the full temperature calibration compensation accuracy of the optical fiber IMU. [0003] For the full-temperature calibration and compensation of the optical fiber IMU, the previous design used high-performance calibration equipment such as a turntable with a temperature box, a horizontal static base high-low temperature box with a north-facing reference, and other high-performance calibration equipment for calibration compensation. This design has high performance requirements for the calibration test equipment and cannot meet the needs of low-cost calibration. Contents of th...

Claims

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 赵建涛张文明唐艺菁兰治法雷小娜
Owner XIAN MICROELECTRONICS TECH INST
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