An electrical adjustment method of aircraft brake pedal displacement sensor

Abstract

The invention relates to an airplane brake pedal displacement sensor electrical adjustment method. The method comprises the following steps: for a pilot, sending an adjustment need instruction to a brake control unit through a central maintenance system, and under the premise that a brake pedal displacement sensor does not have fault, carrying out "zero-journey" and "full-journey" two rounds of collection; carrying out comparison on the collected two rounds of data, and if the value is within an error range, serving and recording the value as a new electrical journey start point and end point;and feeding back the new electrical journey start point and end point to a brake control system to calculate brake pedal displacement correction amount. The method can greatly improve consistency ofoutput signals of all channels of a multi-redundancy brake pedal displacement sensor, so that consistency of airplane wheels of an airplane is greatly improved, and the problems of airplane yaw, overheating of some brake devices and large wear difference of brake discs and the like are effectively prevented; and meanwhile, mounting and dismounting time of the brake pedal displacement sensor is reduced, and maintenance cost of the brake system is reduced.

Description

technical field [0001] The invention belongs to the technical field of aircraft brakes, and relates to an electrical adjustment method for a displacement sensor of an aircraft brake pedal. Background technique [0002] At present, international mainstream aircrafts all use redundant brake pedal displacement sensors, but due to the limitation of manufacturing process, the signal consistency of each channel output by redundant brake pedal displacement sensors is poor, and the unevenness of each channel is generally about 3%, while the brake pedal Displacement signals are generally used to control the brake pressure of different wheels, so the consistency of the brake pressure of each wheel will inevitably be poor, which will cause problems such as aircraft yaw, overheating of individual brake devices, and large differences in brake disc wear. [0003] According to engineering experience, when the brake pedal displacement sensor is installed on the brake pedal for the first tim...

AI Technical Summary

Problems solved by technology

[0006] Patent CN105865323A "An Angular Displacement Sensor Calibrator" discloses a design method of an angular displacement sensor calibrator. The calibrator can calibrate the electrical zero position of the sensor, but it must be implemented based on a hardware circuit and cannot adjust the displacement of the brake pedal. The sensor achieves electrical regulation without adding additional hardware circuits

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