Grounding protection control method of aircraft brake system
A grounding protection and braking system technology, applied in the grounding protection control field of aircraft braking system, can solve the problem that the grounding protection function cannot be guaranteed to be available, and achieve the effect of avoiding the hidden danger of no brake pressure output and the danger of landing with pressure
Active Publication Date: 2022-06-28
XIAN AVIATION BRAKE TECH
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[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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[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, the embodiments in the present application and the features in the embodiments may be combined with each other arbitrarily if there is no conflict.
[0042] As described in the above background art, in the existing grounding protection control logic, since the left and right wheel speeds are judged to be valid once, the grounding protection function cannot be guaranteed to be available after the aircraft goes around.
[0043] If the existing grounding protection control logic is changed from one-time effective judgment to the real-time judgment of the left and right wheel speeds, when the aircraft is in the low-speed section (45 0 +5 km / h) during taxiing, if the aircraft's front wheel load is misjudged as being in the air due ...
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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 ...
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IPC IPC(8): B60T17/22B60T8/17B64C25/42
CPCB60T17/22B60T8/1703B64C25/42
Inventor 张达玮薛焱峰张超陈世攀
Owner XIAN AVIATION BRAKE TECH