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Method and device for suppressing vibration of undercarriage through brake control

A brake control and landing gear technology, which is applied in the field of aircraft braking, can solve the problems of lack of vibration suppression schemes, etc., and achieve the effects of suppressing landing gear vibration, stabilizing control performance, and taking into account braking efficiency

Active Publication Date: 2021-05-28
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of traditional braking control law design, usually only parameters such as braking efficiency are taken as optimization objects, and the vibration problem of the landing gear in the braking process is ignored, resulting in coupling vibration between the alternating braking pressure and the landing gear structure, and the lack of vibration suppression scheme

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  • Method and device for suppressing vibration of undercarriage through brake control
  • Method and device for suppressing vibration of undercarriage through brake control
  • Method and device for suppressing vibration of undercarriage through brake control

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Embodiment Construction

[0039] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only parts related to the present disclosure are shown in the drawings.

[0040] It should be noted that, in the case of no conflict, the implementation modes and the features in the implementation modes in the present disclosure can be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] It should be noted that the numbering of the steps in the text is only for the convenience of explanation of the specific embodiments, and does not serve as a function of limiting the execution order of the steps.

[0042] The methods provided in ...

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Abstract

The invention provides a method and a device for suppressing vibration of an undercarriage through brake control. The method comprises the steps of establishing a brake control model, determining a performance index function, performing model prediction control and the like. The performance index function is designed based on system key indexes, and the system key indexes comprise brake efficiency, deceleration rate, undercarriage deformation and the like. According to the method for suppressing the vibration of the undercarriage through brake control, model predictive control is utilized, the vibration information of the undercarriage is used as one of performance index functions, the vibration information and key indexes such as brake efficiency are jointly used as control system optimization targets, more stable control performance can be provided, and the reliability of the undercarriage is improved. Braking efficiency and undercarriage vibration suppression are both considered, and it is ensured that coupling vibration between the undercarriage and a braking system is suppressed on the premise that the braking efficiency is not affected by a control result obtained through final design.

Description

technical field [0001] The disclosure belongs to the technical field of aircraft brakes, and in particular relates to a method and device for brake control and suppression of landing gear vibration. Background technique [0002] During the braking process, due to the change of the wheel braking torque due to the work of the anti-skid braking system, the friction force between the tire and the runway (that is, the bonding force) changes. When the alternating frequency of the braking torque is close to the resonance frequency of the landing gear, it will cause the landing gear Resonance affects aircraft comfort and taxiing safety. [0003] Under the action of the brake system, the landing gear system will be subject to complex and variable friction, which will cause different types of landing gear structure vibration. In the process of traditional braking control law design, usually only the parameters such as braking efficiency are taken as the optimization object, and the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20G06F111/04G06F119/14
CPCG06F30/15G06F30/20G06F2111/04G06F2119/14
Inventor 齐鹏远廖东明焦宗夏王壮壮刘晓超李洋尚耀星
Owner BEIHANG UNIV
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