Airplane ground running deviation correction control system and method based on braking force redistribution

Abstract

The invention belongs to the field of large airplane braking, and particularly relates to an airplane ground running deviation correction control system and method based on braking force redistribution. Deviation correction control during airplane landing running is designed into a double-layer control strategy controller, and an upper-layer motion control structure and a lower-layer distribution control structure are included; the upper-layer control structure is a motion controller designed for a nonlinear ground running dynamics model of a controlled airplane, and the lower-layer structure is airplane wheel braking force reconstruction and redistribution control to ensure that each airplane wheel obtains optimal braking force distribution; and the double-layer controller carries out control calculation according to the obtained airplane motion parameters to obtain a differential brake torque of each main airplane wheel on the two sides and outputs a control instruction to the brake execution mechanism of the corresponding airplane wheel at the same time, and the brake execution mechanism independently carries out differential brake on each airplane wheel according to the control instruction so that deviation correction control during airplane ground running is achieved. And the stability and safety of airplane landing are ensured.

Description

technical field [0001] The invention belongs to the field of large-scale aircraft braking, and in particular relates to an aircraft ground run deviation correction control system and method based on braking force redistribution. Background technique [0002] Under the rigid demand of transportation, the aviation industry has developed rapidly, the application of aircraft has become more extensive, and aviation accidents have become more frequent. According to the authoritative statistics of the Boeing Company, more than half of the aircraft accidents occurred during the landing and landing braking process of the aircraft. Research on the brake control system to ensure the safety of the aircraft landing and landing has become a hot spot. [0003] The forces on the landing and rolling of the aircraft are relatively complex and non-linear. The complex force factors can easily lead to asymmetrical changes in the loads on the main wheels on both sides of the aircraft, which will ...

AI Technical Summary

Problems solved by technology

[0006] Judging from the published invention patents of aircraft sliding deviation correction control, the method mainly adopts the passive wheel-to-wheel cross protection control strategy, which will increase the braking distance. In terms of application objects, it is mainly aimed at single For small aircraft with wheel-train landing gear structures, these methods cannot meet the aircraft control requirements of large multi-wheel-train landing gear mechanisms

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