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Airborne adaptive transmission alignment algorithm for deflection deformation of airfoil

A technology of deflection deformation and transfer alignment, which is applied in the field of aerospace strapdown inertial navigation, can solve the problems that wing deformation has a great influence and affects accuracy

Active Publication Date: 2019-05-07
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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AI Technical Summary

Problems solved by technology

[0004] The traditional transfer alignment algorithm generally uses "velocity plus attitude matching". Although this matching method has many advantages, it is greatly affected by the deformation of the wing, especially when the aircraft's ground acceleration climbs and the aircraft maneuvers in the air. Alignment accuracy

Method used

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  • Airborne adaptive transmission alignment algorithm for deflection deformation of airfoil
  • Airborne adaptive transmission alignment algorithm for deflection deformation of airfoil
  • Airborne adaptive transmission alignment algorithm for deflection deformation of airfoil

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Embodiment Construction

[0109] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0110] see figure 1 As shown, the embodiment of the present invention provides an airborne adaptive transfer alignment algorithm suitable for wing deflection, including the following steps:

[0111] Calculate the initial position, velocity, and attitude information of the sub-inertial navigation according to the main airborne inertial navigation information, and perform the strapdown calculation of the inertial navigation;

[0112] According to the flight altitude, the observation noise R k Make adjustments and perform alignment calculations for the sub-inertial navigation.

[0113] As a preferred implementation, according to the flight height, the observation noise R k The adjustment includes the following steps: when the wing shape of the aircraft becomes larger during taxiing, make the filter work in the speed matching mode, and...

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Abstract

The invention discloses an airborne adaptive transmission alignment algorithm for deflection deformation of an airfoil, and relates to the technical field of aerospace strap-down inertial navigation.The airborne adaptive transmission alignment algorithm includes calculating an initial position, a speed and attitude information of a sub inertial navigation according to an airborne main inertial navigation information to carry out an inertial navigation strap-down calculation; and adjusting an observation noise Rk according to a flying height to carry out the alignment calculation of the sub inertial navigation. The adaptive of a filtering algorithm is realized, and the environment adaptive capacity and the alignment precision of a speed plus attitude matching algorithm are effectively improved. The algorithm is simple to implement, reliable in operation, good in rapidness and adaptability, and has better engineering application value.

Description

technical field [0001] The invention relates to the technical field of aerospace strapdown inertial navigation, in particular to an airborne self-adaptive transfer alignment algorithm suitable for wing deflection. Background technique [0002] The strapdown inertial navigation system has the advantages of short response time, high reliability, small size, and light weight. It is widely used in military and civilian navigation fields such as aircraft, ships, and missiles. It has important national defense significance and huge economic benefits. [0003] The transfer alignment of the inertial navigation system on the airborne weapon refers to the method that the inertial navigation system on the airborne weapon uses the information of the high-precision main inertial navigation system on the aircraft to perform initial alignment under the condition of the movement of the aircraft. Whether the initial alignment of the inertial navigation system on the airborne weapon can be qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 罗伟张力蒋金龙杨登峰黄鑫鑫王永圣叶昌杨帆曾奎李申张培喜
Owner THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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