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Telex anti-skid brake system having variable gains and variable gain method

An anti-skid brake and variable gain technology, which is applied to vehicle components, brake transmission devices, aircraft brake arrangements, etc., can solve problems such as potential safety hazards, increased structural weight of the braking system, and increased tire wear.

Pending Publication Date: 2019-10-18
XIAN AVIATION BRAKE TECH
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art of increasing the structural weight of the braking system, low aircraft braking efficiency, increased tire wear, and potential safety hazards, the present invention proposes a fly-by-wire anti-skid braking system with variable gain and a variable gain method

Method used

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  • Telex anti-skid brake system having variable gains and variable gain method
  • Telex anti-skid brake system having variable gains and variable gain method
  • Telex anti-skid brake system having variable gains and variable gain method

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Embodiment Construction

[0059] This embodiment is a fly-by-wire anti-skid braking system with variable gain, including a variable-gain brake command sensor 1, an anti-skid brake control box 2, a wheel speed sensor 3, an electro-hydraulic pressure servo valve 4, an electromagnetic hydraulic lock 5, and a hydraulic source 6, fuel tank 7 and pedal 8 are formed.

[0060] Wherein: the oil inlet of the electromagnetic hydraulic lock 5 is connected with the hydraulic source 6, and the oil return port is connected with the oil tank 7; the oil outlet of the electromagnetic hydraulic lock is connected with the oil inlet of the electro-hydraulic pressure servo valve 4 Unicom; the control signal receiving end of the electromagnetic hydraulic lock is in communication with the unlocking signal output end of the anti-skid brake control box 2 . The oil outlet of the electro-hydraulic pressure servo valve communicates with the oil inlet of the wheel brake device, and the oil return port communicates with the oil tank; ...

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Abstract

The invention discloses a telex anti-skid brake system having variable gains and a variable gain method. Value brake pressure and rated brake pressure in a brake system are set according to various different landing state probabilities of an aircraft, wherein the value brake pressure must meet requirements of normal landing brake and normal landing without parachute brake, and the rated brake pressure must meet requirements of the maximum landing, the maximum landing without parachute brake and stop takeoff brake. An adopted brake instruction sensor has two force sensing springs, so that the brake instruction sensor has two different control force and stroke gains, and therefore, a variable gain digital telex anti-skid brake system can simultaneously meet brake requirements under various conditions of normal landing brake, the maximum landing brake, normal landing without parachute brake, the maximum landing without parachute brake and stop takeoff brake. The system is less in work frequency, so that brake efficiency can be guaranteed, the brake distances of the aircraft can be shortened, the abrasion degree of brake wheel tires can be reduced, the service life of the brake wheel tires can be prolonged, and the uniform abrasion of the tires can be achieved.

Description

technical field [0001] The invention relates to the field of aircraft braking systems, in particular to a variable-gain digital fly-by-wire anti-skid braking system and a variable-gain method. Background technique [0002] A normal braking system of an aircraft digital fly-by-wire anti-skid braking system in the prior art. Foot brakes and foot differentials are generally used, and the output brake pressure is proportional to the brake footstool force. The greater the footstool force, the longer the travel of the variable gain brake command sensor, and the higher the output brake command voltage of the variable gain brake command sensor. The existing technology The structural diagram of the variable gain brake command sensor is shown in figure 1 , see the control force and stroke gain curve 27 in the prior art for details image 3 . According to the curve 27, the operating force of the brake footrest is proportional to the braking command stroke. The minimum control force...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/42B64C25/44B60T13/68B60T13/74
CPCB64C25/42B64C25/44B60T13/68B60T13/74
Inventor 刘忠平韩亚国
Owner XIAN AVIATION BRAKE TECH
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