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Method and apparatus for inhibiting fan-shaped superfluid interference grating gyroscope measurement angle speed noise

An angular velocity, superfluid technology, applied in the field of high-precision detection of gyroscopes, can solve problems such as low detection accuracy and noise impact

Inactive Publication Date: 2019-03-12
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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  • Application Information

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Problems solved by technology

[0006] Although the detection sensitivity of the existing high-sensitivity structure of the superfluid gyroscope has been improved, when the fan-shaped superfluid interference grating gyroscope is used to detect angular velocity, the results obtained are greatly affected by noise and the detection accuracy is low

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  • Method and apparatus for inhibiting fan-shaped superfluid interference grating gyroscope measurement angle speed noise
  • Method and apparatus for inhibiting fan-shaped superfluid interference grating gyroscope measurement angle speed noise
  • Method and apparatus for inhibiting fan-shaped superfluid interference grating gyroscope measurement angle speed noise

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Embodiment Construction

[0060] The present invention is described in detail below in conjunction with examples, but the present invention is not limited to these examples.

[0061] see figure 1 The method for suppressing the angular velocity noise measured by the fan-shaped superfluid interference grating gyroscope provided by the invention comprises the following steps:

[0062] Step S100: establishing the principle equation of the gyro angular velocity sensitivity;

[0063] The construction of the equation is obtained according to the structural characteristics and working principle of the fan-shaped superfluid interfering grating gyroscope.

[0064] Step S200: According to the gyro angular velocity sensitivity principle equation, a fluctuation-equivalent angular velocity noise model caused by thermal phase fluctuation is established;

[0065] The influence of thermal motion needs to be considered in the establishment of the model.

[0066] Step S300: According to the fluctuation-equivalent angu...

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Abstract

The invention discloses a method and apparatus for inhibiting the fan-shaped superfluid interference grating gyroscope measurement angle speed noise. The method comprises the following steps: establishing an angle speed sensitive principal equation according to the structural characteristics and working principle of a fan-shaped superfluid interference grating gyroscope; establishing a fluctuation-equivalent angle speed noise model caused by a thermal phase fluctuation; and by considering the irrelevance between the thermal phase fluctuation angle speed noise and input angle speed and according to a recursive least square method, designing a noise self-adaptive counteraction system of the fan-shaped superfluid interference grating gyroscope, thereby inhibiting the gyroscope output angle speed noise, and improving the angle speed detection precision of the entire fan-shaped superfluid interference grafting gyroscope. The invention also provides an apparatus of the method.

Description

technical field [0001] The invention relates to a method and a device for suppressing angular velocity noise of a fan-shaped superfluid interference grating gyroscope, belonging to the field of high-precision detection of gyroscopes. Background technique [0002] For major long-distance missions such as manned spaceflight, lunar exploration projects, and critical space vehicles, due to the continuous improvement of technical requirements such as flight distance, flight time, and flight speed, the indicators such as the accuracy, sensitivity, and volume of the gyroscope are increasingly higher. requirements. In order to break through the traditional thinking mode and realize the leap-forward development of inertial gyroscopes, many scholars at home and abroad have begun to seek new physical effects and study gyroscopes based on new measurement principles or measurement methods. [0003] After entering the 21st century, major breakthroughs have been made in the research of qu...

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Application Information

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IPC IPC(8): G01C19/64
CPCG01C19/64
Inventor 赵玉龙杨雅君胡敏肖龙龙潘显俊
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV