A Method for Aircraft Redundancy Diagnosis Using Full Quantity Information

Abstract

The invention discloses a method for performing aircraft redundancy diagnosis by utilizing full amount information. The method comprises the following steps: as speed full amount information measured by a satellite navigation receiver is taken as reference, performing uniformity comparison on speed full amount information of a master inertia unit and a slave inertia unit, judging whether the master inertia unit or the slave inertia unit fails according to a comparison result, and determining to select the master inertia unit or the slave inertia unit to participate in flight control in the residual flight time according to a determination result. According to the scheme, the characteristic that the satellite navigation information has high precision is utilized, and the information can serve as the reference of evaluating low-precision information; the characteristic that the satellite navigation information is measured and updated in real time is utilized, the subsequent full amount information is not introduced even if the measurement error is extremely large at a certain time due to the environment and other factors, the misjudgment is avoided, the diagnosis is performed finally by using the full amount information, the missing judgment caused by incremental information is overcome, and the failure recognition capability of a system is obviously improved. Therefore, the flight reliability and launching success rate are obviously increased.

Description

technical field [0001] The invention relates to a method for aircraft redundancy diagnosis by using full amount of information. Background technique [0002] The control system is the nerve center of the rocket, which is used to control the flight trajectory and attitude of the rocket, to ensure the stable flight of the rocket, and to ensure that the rocket accurately sends the satellite into the predetermined orbit. Therefore, improving the reliability of the control system is the key to improving the reliability of rocket flight. [0003] Launch vehicles generally use the incremental information of multiple inertial devices within a certain period of time for fault diagnosis to determine whether one or more of these inertial devices is faulty. The effect of fault diagnosis using this diagnostic method is limited. Contents of the invention [0004] The technical problem to be solved by the present invention is: aiming at the deficiency of the prior art, it provides a met...

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Problems solved by technology

[0003] Launch vehicles generally use the incremental information of multiple inertial devices within a certain period of time for fault diagnosis to determine whether one or more of these inertial devices is faulty. The effect of fault diagnosis using this diagnostic method is limited

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