According to the dual-redundancy brake instruction control system and control method for the airplane wheel brake system, dual-redundancy control over pedal displacement is achieved, each instruction sensor comprises two linear displacement sensors which control different channels respectively, the situation that the brake capacity is lost due to the fact that one linear displacement sensor breaks down is avoided, and the usability of the brake system is improved by 50%. The pedal displacement signals are subjected to self-detection judgment, whether the pedal displacement signals fail or not is judged, and whether precision failures exist or not is comprehensively judged by comparing the pedal displacement signals detected by the two linear displacement sensors on the instruction sensor of the same pedal; the problem that precision faults of the linear displacement sensor cannot be judged in traditional monitoring is solved, the system detection rate is increased by 5%, and the maintenance time is shortened. Pedal displacement and pedal brake pressure are output in a three-section variable gain mode, a pilot is prevented from stepping by mistake, rapid pressure relief in the pedal brake pressure slipping stage is achieved, the pressure relief response is increased by 20%, and brake control is achieved through simple logic.
一种飞机机轮刹车系统两余度刹车指令控制系统及控制方法,双余度控制脚蹬位移,每个指令传感器包含两个直线位移传感器分别控制不同的通道,避免因一个直线位移传感器故障而造成丧失刹车能力,提高了刹车系统50%的可用性。对脚蹬位移信号进行自检测判断,判断脚蹬位移信号是否故障,以及通过同一脚蹬的指令传感器上的两个直线位移传感器检测的脚蹬位移信号进行比较综合判断是否存在精度故障,解决了传统监控中无法对直线位移传感器精度故障的判断,提高系统检测率5%,降低维修时间。脚蹬位移和脚蹬刹车压力采用三段变增益方式输出,防止飞行员误踩,以及在脚蹬刹车压力打滑阶段的快速泄压,泄压响应增加了20%,通过简单的逻辑实现了刹车控制。
Dual-redundancy brake instruction control system and control method for airplane wheel brake system
飞机机轮刹车系统两余度刹车指令控制系统及控制方法
04.04.2023
Patent
Elektronische Ressource
Chinesisch
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