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Full-pressure regulation type braking control method for aircraft anti-skid braking system

A technology of anti-skid braking and braking control, applied in the direction of aircraft braking arrangement, braking regulator, braking safety system, etc., can solve the problems of low braking efficiency, low reliability, poor safety, etc. Braking efficiency, the effect of improving efficiency

Active Publication Date: 2017-05-10
XIAN AVIATION BRAKE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the shortcomings of low braking efficiency, single control mode, low reliability and poor safety in the prior art, the present invention proposes a full pressure regulation braking control method for aircraft anti-skid braking systems

Method used

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  • Full-pressure regulation type braking control method for aircraft anti-skid braking system
  • Full-pressure regulation type braking control method for aircraft anti-skid braking system

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Embodiment Construction

[0036] This embodiment is a full pressure regulation braking control method for an anti-skid braking system of a certain type of aircraft.

[0037] This embodiment is based on the fly-by-wire anti-skid braking system, and the control period of the anti-skid braking system is 10 ms. In this embodiment, the primary coefficient a of the braking command voltage, the secondary coefficient b of the braking command voltage, and the braking pressure P of the current cycle are determined. t Calculation constant c, critical brake pressure P k And input the brake command voltage, judge the brake pressure of multiple control cycles, and verify the full pressure regulation brake control method.

[0038] This embodiment includes the following steps:

[0039] Step 1: Determine the brake pressure target value P mi The functional relationship between the braking command voltage U

[0040] Determine the brake pressure target value P by formula (1) mi The functional relationship between the...

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Abstract

Disclosed is a full-pressure regulation type braking control method for an aircraft anti-skid braking system. According to the full-pressure regulation type braking control method, dual-range control is adopted, so that braking efficiency is improved and safety is ensured. Dual-range control refers to that one mode is adopted when Pm is not less than Pk, and another mode is adopted when Pm is less than Pk. The full-pressure regulation type braking control method for the aircraft anti-skid braking system has the advantages that nonlinear control is adopted when a value is between a target braking pressure value and a braking command voltage; when the braking command voltage is positioned in a low-gain region and the target braking pressure value Pm corresponds to the braking command voltage with high precision, a pilot can manipulate an aircraft flexibly in a glide braking phase; when the braking command voltage is positioned in a high-gain region and the target braking pressure value Pm corresponds to the braking command voltage with low precision, the pilot can apply maximal braking pressure rapidly if necessary, so that braking efficiency is improved and braking distance is shortened.

Description

technical field [0001] The invention relates to the technical field of aircraft braking control, in particular to a control method for controlling braking under normal braking pressure in the full range of oil source pressure. Background technique [0002] At present, the normal rated brake pressure is basically controlled below 0.5 times of the oil source pressure, which is a derating brake control method. This derating braking control method is widely used at present. However, due to the high energy or wet condition of the brake material, under the same braking pressure, the braking torque generated by the aircraft wheels will be significantly attenuated, causing the aircraft to decelerate slowly, and sometimes rush out of the runway, causing accidents . Therefore, the derating braking control method has the problem of low braking efficiency. [0003] According to the principle of wheel braking, the braking system provides braking pressure, pushes the wheel piston to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/46B60T8/17B60T17/22
CPCB60T8/1703B60T17/22B64C25/46
Inventor 张仲康刘劲松王红玲郭彩虹
Owner XIAN AVIATION BRAKE TECH
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