According to the system and method for actively inhibiting the brake vibration of the airplane wheel, by judging whether the speed of the airplane wheel is suddenly changed or not, undercarriage course vibration and turning difficulty caused by asymmetric brake pressure due to the suddenly changed speed of the airplane wheel are avoided. By segmenting the low-speed sliding speed of the airplane and limiting the brake pressure according to the segmented speed, the problem of longitudinal vibration of the airplane at a low speed is avoided, and the vibration probability of the low-speed stage is reduced by 1E-4. The speed reduction rate control range of the airplane wheel is formulated according to the braking torque characteristic in the high-speed section of the airplane, the braking pressure is controlled to achieve the control purpose of constant torque, and braking vibration caused by skid resistance in the high-speed braking stage of the airplane due to torque change is avoided. A longitudinal acceleration sensor and a heading acceleration sensor are additionally arranged in an airplane wheel braking system, and braking pressure is limited according to heading vibration frequency and longitudinal vibration frequency signals, so that it is ensured that vibration caused by braking cannot occur in the full braking process.
一种主动抑制飞机机轮刹车振动的系统及抑制方法,通过判断机轮速度是否突变,以避免由于机轮速度突变导致的不对称刹车压力引起的起落架航向振动以及转弯困难。通过对飞机低速滑行速度的分段,并根据分段的速度进行刹车压力限制,避免了低速时飞机的纵向振动问题,使低速阶段的振动概率降低了1E‑4。在飞机高速段根据刹车力矩特性制定机轮的减速率控制范围,控制刹车压力实现恒力矩的控制目的,避免了由于力矩变化引起在飞机高速刹车阶段由于防滑引起的刹车振动。在机轮刹车系统中增加纵向加速度传感器和航向加速度传感器,根据航向振动频率和纵向振动频率信号,对刹车压力进行限制已确保全刹车过程中不会出现由于刹车引起的振动。
System and method for actively restraining airplane wheel brake vibration
一种主动抑制飞机机轮刹车振动的系统及抑制方法
2024-06-21
Patent
Electronic Resource
Chinese
Airplane wheel brake control valve group and airplane brake system
European Patent Office | 2024
|European Patent Office | 2024
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