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Aircraft antiskid brake system fault processing method

A technology of anti-skid brakes and processing methods, which is applied in the direction of brake safety systems, aircraft brake arrangements, brake regulators, etc., and can solve problems such as aircraft tire bursts, affecting aircraft course control and deceleration control, brake wheel dragging tires, etc.

Pending Publication Date: 2021-04-09
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is a common deficiency in aircraft at present. The anti-skid braking system of the aircraft is controlled by electro-hydraulic pressure. Once the anti-skid control is abnormal, it is easy to cause abnormal brake pressure output of the system, especially when the brake control valve has a mechanical failure. It will directly cause the brake wheel to drag the tire, which will easily cause the aircraft to blow out, which will seriously affect the aircraft's course control and deceleration control, thus affecting the landing safety of the aircraft

Method used

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Embodiment 1

[0028] The technical scheme of the present invention is: a kind of aircraft anti-skid braking system trouble-shooting method, and this method is the wheel speed signal output through the wheel speed sensor combined with the aircraft speed signal, judges that the wheel is in the locked situation, when the wheel appears normal When skidding, the system controls the anti-skid brake of the aircraft according to the normal anti-skid control. When the wheel skids moderately, the system controls the anti-skid brake pressure of the corresponding wheel by half. When the wheel skids heavily, the system cuts off the brake. Control the oil supply path of the valve so that the corresponding wheel cannot output the brake pressure, and ensure that the wheel in this channel is fully rotated.

[0029] Under normal circumstances, the system outputs according to the normal brake pressure. After the anti-skid brake system fails, the system adopts safety protection measures as follows:

[0030] 1)...

Embodiment 2

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, an aircraft anti-skid braking system includes a brake command sensor 1, an anti-skid brake controller 2, a brake cut-off valve 3, an anti-skid brake control valve 4, a wheel speed sensor 5 and a brake pressure sensor 6; wherein, the brake command sensor 1 Installed on the brake pedal, and the brake command sensor is electrically connected with the anti-skid brake controller 2; the anti-skid brake controller 2 is electrically connected with the brake cut-off valve 3, and the anti-skid brake controller 2 is electrically connected with the anti-skid brake control valve 4 The wheel speed sensor 5 is installed on the wheel brake device. The wheel speed sensor 5 is electrically connected to the anti-skid brake controller. The oil inlet of the brake cut-off valve 3 is connected to the hydraulic pressure supply pipeline. It is connected wit...

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Abstract

The invention provides an aircraft anti-skid brake system fault processing method which is applied to an aircraft anti-skid brake system, and the aircraft anti-skid brake system comprises a brake instruction sensor (1), an anti-skid brake controller (2), a brake cut-off valve (3), an anti-skid brake control valve (4), an aircraft wheel speed sensor (5) and a brake pressure sensor (6). The method comprises the steps that the anti-skid brake system obtains the airplane speed V and the airplane wheel speed V in real time; according to the airplane speed V (km / h) and the airplane wheel speed V (km / h), the airplane wheel slip amount eta of the current airplane wheel is calculated according to a formula, and eta belongs to [0, 1]; the slipping amount eta of the airplane wheel is judged; when eta<M1, it is determined that the airplane wheel is in a normal slipping state; when M1<=eta<M2, it is determined that the airplane wheel is in a moderate slipping state; when eta>=M2, it is determined that the airplane wheel is in a severe slipping state; and a corresponding fault processing strategy is adopted according to the slipping state of the airplane wheel.

Description

technical field [0001] The invention relates to the technical field of an aircraft anti-skid brake control system, in particular to a method for troubleshooting an aircraft anti-skid brake system. Background technique [0002] The aircraft braking system is a subsystem with relatively independent functions on the aircraft. Its function is to bear the static weight and dynamic impact load of the aircraft and absorb the kinetic energy of the aircraft when it lands, so as to realize the braking and control of the aircraft's take-off, landing, and taxiing. At present, aircraft braking systems are widely equipped with anti-skid control functions to ensure that the aircraft will not brake tires during the braking process, prevent aircraft brakes from blowing out, and improve the safety of aircraft braking and deceleration. [0003] However, there is a common deficiency in aircraft at present. The anti-skid braking system of the aircraft is controlled by electro-hydraulic pressure....

Claims

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Application Information

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IPC IPC(8): B60T17/22B64C25/46
CPCB60T17/22B64C25/46
Inventor 刘泽华李胜军
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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