Airplane electric transmission braking system for improving braking capacity in take-off line and control method

Abstract

The invention relates to an airplane electric transmission braking system for improving the braking capacity in a take-off line and a control method. A control box respectively receives a braking command voltage signal sent by a braking command sensor and an airplane wheel speed voltage signal provided by an airplane wheel speed sensor; the control box sends a braking anti-skid control current signal to an electro-hydraulic servo valve. The electro-hydraulic servo valve is arranged on a hydraulic pipeline in an airplane main undercarriage cabin. A hydraulic control valve is arranged on a hydraulic pipeline output by a braking port of the electro-hydraulic servo valve. When braking in the take-off line, when a hydraulic brake pressure output by the electro-hydraulic servo valve is greater than a preset value, the hydraulic control valve is started, an oil path is switched, and the high-pressure hydraulic pressure of a pressure supply source of a braking system is directly output to an airplane wheel braking device to carry out take-off line braking operation. According to the airplane electric transmission braking system for improving the braking capacity in the take-off line and the control method, the control box interferes and controls a braking control current of the electro-hydraulic servo valve to interfere and control the hydraulic control valve to switch the oil path, sothat dangerous consequences caused by misjudgment and misuse of the take-off line braking are avoided, the take-off line braking reliability is effectively improved, and safe and reliable use of theairplane is ensured.

Description

technical field [0001] The invention relates to an aircraft fly-by-wire braking system, in particular to an aircraft fly-by-wire braking system which improves the braking capability of the take-off line. Background technique [0002] The aircraft wheel brake system is a component of modern aircraft landing gear, and is the basic guarantee equipment for the safe operation of aircraft take-off, landing roll and ground taxi control. At the same time, prevent the tire from braking. The aircraft wheel brake system is used for the brake control and anti-skid control of the aircraft wheel. At present, the electronic anti-skid brake system is widely used in the aircraft, and the aircraft fly-by-wire brake system is a further development of the aircraft electronic anti-skid brake system. The aircraft fly-by-wire braking system mainly includes a brake command sensor, an electro-hydraulic servo valve, a wheel speed sensor, and an anti-skid brake control box (referred to as the control...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the low reliability of the take-off line braking of the aircraft fly-by-wire braking system in the prior art, the present invention proposes an aircraft fly-by-wire braking system and a control method that improves the take-off line braking capability

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