Power-on self-test protection method for anti-skid brake system of airplane

A technology of anti-skid braking and system power supply, which is applied in the direction of braking safety system, aircraft braking arrangement, brake, etc., and can solve the problems of rising false alarm rate and low reliability

Active Publication Date: 2017-02-15
XIAN AVIATION BRAKE TECH
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Problems solved by technology

[0014] In order to overcome the shortcomings of rising false alarm rate and low reliability in the prior ar...

Method used

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Embodiment Construction

[0033] This embodiment is based on the fly-by-wire anti-skid braking system, and the anti-skid braking system completes the power-on self-inspection within 3s. In this embodiment, the power-on self-inspection protection control is performed through the control of the anti-skid brake control box in the aircraft anti-skid brake system. The power-on self-check protection function of the aircraft is realized by judging the hardware signals collected by the anti-skid brake control box. The acquisition hardware signal refers to the wheel speed signal and the brake command voltage signal.

[0034] This embodiment includes the following steps:

[0035] Step 1, preset parameters.

[0036] Before power supply, the preset left wheel speed is V KL , the speed of the right wheel is V KL , The left power-on self-test brake command voltage threshold is U L , The voltage threshold of the right power-on self-test brake command is U R .

[0037] Step 2, setting the power-on self-test thr...

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Abstract

The invention provides a power-on self-test protection method for an anti-skid brake system of an airplane. Comprehensive fault diagnosis is conducted for all electrical functions in the anti-skid brake system, and whether the anti-skid brake system can continue to be used or not is determined according to a fault diagnosis result. After a power-on self-test, periodical self-testing of the anti-skid brake system is conducted automatically. Fault diagnosis is conducted for only part of the electrical functions during periodical self-testing. The period refers to the control period of an anti-skid brake of the airplane, and the control period is generally 20 ms or 40 ms. The power-on self-test protection method is suitable for protection of the anti-skid brake system of the airplane in the abnormal starting process of the anti-skid brake system of the airplane and also suitable for emergency restarting of the anti-skid brake system of the airplane when specific brake faults occur after the anti-skid brake system of the airplane is started. By adoption of the power-on self-test protection method for the anti-skid brake system of the airplane, the reliability and safety of the anti-skid brake system of the airplane are improved.

Description

technical field [0001] The invention relates to the technical field of aircraft brake control, in particular to a power-on self-inspection protection method for an aircraft anti-skid brake system. Background technique [0002] The aircraft anti-skid brake system can only work normally after power is supplied. Aircraft anti-skid brake system usually carries out two kinds of fault detection in the normal working process, one is power-on self-test, and the other is periodic self-test. The power-on self-inspection performs fault detection immediately after the power switch of the aircraft anti-skid brake system is turned on. The fault detection range is comprehensive, and it usually takes 2s to 3s. During this time, the anti-skid brake control cannot be performed. The periodic self-inspection performs fault detection according to the control cycle of the aircraft anti-skid brake system, and the fault detection range is small, and the periodic self-inspection can carry out anti-...

Claims

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Application Information

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IPC IPC(8): B64C25/46B60T8/17B60T17/22
CPCB60T8/1703B60T17/22B64C25/46
Inventor 张仲康张永亮陈世攀郭彩虹
Owner XIAN AVIATION BRAKE TECH
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