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Double ten-meter inertial unit master-slave redundancy method

A master-slave, double ten technology, applied in the field of inertial navigation, can solve the problems of large system misjudgments and missed judgments, limited fault adaptation, inability to effectively use redundant information, etc., to avoid misjudgments and missed judgments.

Pending Publication Date: 2021-06-11
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The existing inertial navigation cannot meet the requirements of reliable work in the case of second-degree and above single-meter-level faults, and cannot effectively use redundant information. The adaptability to faults is limited, and the system has a high probability of misjudgment and missed judgment.

Method used

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  • Double ten-meter inertial unit master-slave redundancy method
  • Double ten-meter inertial unit master-slave redundancy method
  • Double ten-meter inertial unit master-slave redundancy method

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] figure 1 It is a schematic flow chart of the master-slave redundant navigation method with dual inertial groups. Such as figure 1 As shown, the present invention provides a dual-inertial group master-slave redundant navigation method. The dual-inertia group includes a master inertial group and a slave inertial group. Both the master inertial group and the slave inertial group include five gyroscopes Wx , Wy, Wz, Ws, Wt and five accelerom...

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Abstract

The invention relates to a double ten-meter inertial unit master-slave redundancy method. The method comprises the following steps of S1, respectively carrying out fault meter detection in a master inertial unit and a slave inertial unit, and executing fault meter isolation operation; S2, in the master inertial unit and the slave inertial unit, carrying out navigation calculation by using a fault-free meter after the fault meter isolation operation, and acquiring master inertial unit navigation information and slave inertial unit navigation information respectively; and S3, determining to adopt one of the master inertial unit and the slave inertial unit to perform navigation control according to the redundant information using a truth table, and performing navigation according to the navigation information output by the determined inertial unit. According to the invention, redundant information can be effectively utilized, the requirement for reliable work under the condition of second-degree and higher-degree single-meter-level faults is met, the faults are detected to the maximum extent, and meanwhile misjudgment and missed judgment are avoided.

Description

technical field [0001] The invention relates to the technical field of inertial navigation, in particular to a master-slave redundancy method for a dual ten table inertial group. Background technique [0002] In order to improve the reliability of the strapdown inertial group, the current effective way is to use the redundant technology. Manned launch vehicles need to meet higher reliability and safety requirements, so the redundancy scheme covers a higher degree of failure than other models, and it is necessary to ensure that the inertial set can work reliably under the condition of two or more failures. [0003] The existing inertial navigation cannot meet the requirements of reliable work in the case of second-degree and above single-meter-level faults, and cannot effectively use redundant information. The adaptability to faults is limited, and the system has a high probability of misjudgment and missed judgment. . Contents of the invention [0004] The main purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01C21/20G01C25/00
CPCG01C21/16G01C21/20G01C25/005
Inventor 施国兴柴嘉薪王聪
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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