Symmetric diagonal configuration method based on pentahedron

A configuration method and pentahedron technology, applied in the field of inertial navigation, can solve the problem that the configuration matrix does not meet the optimal criterion, and achieve the effects of reducing volume, reducing cost and improving reliability

Inactive Publication Date: 2015-04-08
HARBIN ENG UNIV
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Problems solved by technology

[0006] Therefore, the configuration matrix does not satisfy the optimal criterion

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  • Symmetric diagonal configuration method based on pentahedron
  • Symmetric diagonal configuration method based on pentahedron
  • Symmetric diagonal configuration method based on pentahedron

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] A symmetrical oblique configuration method based on pentahedron, which includes four inertial components, each inertial component contains a gyroscope and an accelerometer, and the gyroscope and accelerometer in each inertial component are installed together, so that the two The directions of the measurement axes of the two inertial devices are consistent; the angles between the direction of the measurement axis of the inertial component 1 and the x negative semi-axis, the y negative semi-axis and the z positive semi-axis are all 54.74°, and are installed at the center of the ABE on the side of the pentahedron; the inertial component The direction of the measuring axis of 2 is 54.74° with the positive x semi-axis, the negative y semi-axis and the positive semi-axis of z, and it is installed at the center of ABC on the side of the pentahedron; The included angles...

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Abstract

The invention relates to the technical field of inertial navigation, in particular to a symmetric diagonal configuration method based on a pentahedron. The symmetric diagonal configuration method based on the pentahedron is characterized in that directions of measuring axes of four inertial components are diagonal relatively to an orthogonal coordinate system, the directions of the measuring axes of the four inertial components are vertical to four side faces of the pentahedron, each inertial component comprises a spinning top and an accelerometer, the directions of each spinning top and each accelerometer keep consistent, intersection angles of the four side faces and the bottom face of the pentahedron are all 54.74 degrees, each side face of the pentahedron is an equilateral triangle, the bottom face of the pentahedron is a square, and an original point of the orthogonal coordinate system is the center of the bottom face of the pentahedron. According to the symmetric diagonal configuration method based on the pentahedron, the four inertial components in the configuration scheme are distributed in symmetric mode, and are all diagonally placed relatively to the orthogonal coordinate system, and when a single fault is caused on an arbitrarily one of the four inertial components, measuring accuracy of the orthogonal coordinate system can not change along with change of the inertial component which breaks down.

Description

technical field [0001] The invention relates to the technical field of inertial navigation, in particular to a method for symmetrical oblique configuration based on pentahedron. Background technique [0002] In order to realize the precise strike of the navigation system and guarantee the navigation tasks of submarines, ships, satellites and other carriers, the requirements for the accuracy and reliability of inertial navigation are getting higher and higher. Redundancy configuration by increasing the number of inertial devices is currently the most mainstream method to improve system accuracy and reliability. Because installing the inertial devices in a certain combination can not only improve the redundancy of each axis of the inertial measurement unit, but also improve the navigation accuracy by using repeated measurement data. For small vehicles, due to the large size of the inertial devices themselves, simply increasing the number of inertial devices can improve the re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16
CPCG01C21/16
Inventor 程建华董金鲁孙湘钰齐兵王通达宋春雨李美玲徐英蛟刘萍于天琦
Owner HARBIN ENG UNIV
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