Grounding protection control method of aircraft brake system

Abstract

The invention provides a ground protection control method for an aircraft brake system. The ground protection control method comprises the following steps: step 1, judging whether a bus of an anti-skid brake control box normally communicates or not; 2, when the bus communication fault is judged, the anti-skid brake control box collects a front wheel load signal through a hard wire and collects a left wheel speed signal and a right wheel speed signal; step 3, judging a front wheel load state according to a front wheel load signal acquired by the hard wire; 4, according to the judged front wheel load state or the collected left and right wheel speed signals, the current air-ground state of the airplane is judged, and a ground protection control strategy is executed according to the current air-ground state of the airplane; wherein the current air-ground state of the airplane comprises that the airplane is reliably grounded at present, the airplane is always in a ground state and the airplane is in an air state at present. According to the technical scheme of the embodiment of the invention, the problem that an existing grounding protection control mode cannot ensure that the grounding protection function is available after the airplane reflies due to the fact that the judgment on the air-ground state is effective once is solved.

Description

technical field [0001] The invention relates to, but is not limited to, the technical field of aircraft brakes, in particular to a grounding protection control method of an aircraft brake system. Background technique [0002] The aircraft braking system is an important part of the aircraft electromechanical system, which mainly realizes the braking function used in the landing and rolling phases of the aircraft, and shortens the rolling distance of the aircraft. Aircraft brake systems generally have common functions such as normal landing brake function, take-off line brake function, emergency brake function, landing gear retraction brake function, wheel-to-wheel protection function, fault detection function, grounding protection function, and anti-skid function. Among them, the grounding protection function is one of the indispensable functions of the aircraft braking system. The realization of the grounding protection function is usually as follows: Judging the air-ground ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention: the embodiment of the present invention provides a grounding protection control method of the aircraft braking system, to solve the existing grounding protection control mode, due to the air-ground state It is judged to be effective once, which leads to the problem that the ground protection function cannot be guaranteed to be available after the aircraft goes around

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