Airplane brake main and auxiliary channel lockout control system and control method thereof

A technology of blocking control and channel control, applied in braking safety systems, brakes, vehicle components, etc., to achieve the effects of simple and reliable methods, refinement of failure modes, and increased output reliability

Active Publication Date: 2020-03-10
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing redundancy switching technology, when the switching control is not thorough, it will cause two redundancy to control the output at the same time. It is necessary to enhance the reliability of redundancy switching on the basis of the existing redundancy control.

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  • Airplane brake main and auxiliary channel lockout control system and control method thereof
  • Airplane brake main and auxiliary channel lockout control system and control method thereof
  • Airplane brake main and auxiliary channel lockout control system and control method thereof

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] The aircraft braking system is an important part of the aircraft's electromechanical system. It mainly realizes the braking function used in the landing and taxiing stages of the aircraft, and shortens the aircraft's taxiing distance. The braking systems used in the professional field include inertial anti-skid braking system, electronic anti-skid braking system, digital fly-by-wire anti-skid braking system and so on. The digital fly-by-wire anti-skid brake system is composed of hydraulic source and hydraulic pipeline, brake command sensor, speed sensor, hydraulic servo valve, hydraulic solenoid valve, anti-skid brake control box and brake device and other components. The redundant configuration and control of the braking system is an indispensable design framework in the digital fly-by-wire anti-skid braking system.

[0020] In the aircraft bra...

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PUM

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Abstract

The invention provides an airplane brake main and auxiliary channel lockout control system and a control method thereof. The system comprises a main channel control unit and an auxiliary channel control unit which are the same. A CPU outputs a signal to a logic gate, the logic gate outputs a servo valve cutting signal to enter in an analog switch 1 to be subjected to channel selection, the analogswitch 1 is connected to a solid relay to achieve hardware interlocking, an analog switch 2 outputs a signal to a left servo valve drive circuit and a right servo valve drive circuit, and the left servo valve drive circuit and the right servo valve drive circuit output the servo valve cutting signal. The circuit interlocking control manner is simple and reliable, on the basis of ensuring dual-redundancy effective control, the possibility that two channels carry out simultaneous output is avoided, through hardware design guarantee, meanwhile, only one channel is allowed to output a brake circuit, the onboard equipment failure mode is refined, and the onboard equipment output reliability is improved.

Description

technical field [0001] The invention relates to the field of brakes, in particular to an aircraft brake control system. Background technique [0002] The aircraft hydraulic system has a great influence on the safety of the aircraft. According to relevant information, about 50% of aircraft accidents are caused by hydraulic energy system failures. How to improve the reliability of aircraft hydraulic energy system is an urgent problem to be solved. To improve reliability. It is often realized by means of redundancy configuration. After a large number of studies on the hydraulic system configuration of civil airliners, it is found that in order to improve the reliability and maintainability of the aircraft hydraulic system, modern civil airliners usually adopt redundant design for the hydraulic system when designing the aircraft. Twin-engine aircraft such as Boeing 737 series and Airbus 320 series generally have three independent hydraulic source systems. The four-engine ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/66B60T13/68B60T17/22
CPCB60T13/662B60T13/665B60T13/68B60T17/22
Inventor 谢晖李晓猛李刚
Owner XIAN AVIATION BRAKE TECH
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