Deceleration rate control-based antiskid braking system and method for airplane

Abstract

The invention relates to a deceleration rate control-based antiskid braking system and a deceleration rate control-based antiskid braking method for an airplane. The system comprises a left braking instruction sensor, a right braking instruction sensor, an antiskid braking controller, electromagnetic hydraulic locks, braking control valves, braking pressure sensors and airplane wheel speed sensors. A set of hydraulic source is used for providing pressure, and enters the two electromagnetic hydraulic locks respectively, one braking control valve is connected behind each electromagnetic hydraulic lock, one pressure sensor is connected behind each braking control valve, left and right braking airplane wheels are connected behind the pressure sensors, the airplane wheel speed sensors are mounted in wheel shafts of the airplane wheels, signals of the braking instruction sensors, the pressure sensors and the airplane wheel speed sensors enter the antiskid braking controller, and the braking controller controls the electromagnetic hydraulic locks and the braking control valves. According to the system and the method, the airplane is stably decelerated in a braking process, the deceleration rate can be steplessly regulated, and the braking deceleration stability of the airplane and the comfort of a driver and passengers are improved.

Description

technical field [0001] The invention relates to an aircraft antiskid braking system and method based on deceleration rate control. Background technique [0002] Aircraft brake control system is an important airborne equipment. Whether the brake system can work normally will seriously affect the safety of the aircraft. At the same time, during the braking process of the aircraft, the stability of the anti-skid brake system will directly affect the stability of the aircraft and the passenger ride. At present, the normal braking process of the aircraft is usually controlled based on the brake pressure. When the braking pressure is too high, the aircraft is in the process of frequent skidding. At this time, the deceleration process of the aircraft is extremely unstable, and the deceleration rate of the aircraft is in a large fluctuation range. In today's more advanced civil aircraft, there is usually an automatic braking system, and the automatic braking control is controlled by...

AI Technical Summary

Problems solved by technology

[0002] Aircraft brake control system is an important airborne equipment. Whether the brake system can work normally will seriously affect the safety of the aircraft. At the same time, during the braking process of the aircraft, the stability of the anti-skid brake system will directly affect the stability of the aircraft and the passenger ride. At present, the normal braking process of the aircraft is usually controlled based on the brake pressure. When the braking pressure is too high, the aircraft is in the process of frequent skidding. At this time, the deceleration process of the aircraft is extremely unstable, and the deceleration rate of the aircraft is in a large fluctuation range. In today's more advanced civil aircraft, there is usually an automatic braking system, and the automatic braking control is controlled by the deceleration rate. When the aircraft uses automatic braking, it usually works after a certain level is selected. When the pilot feels that the selected deceleration rate level is not appropriate, it will switch to normal braking with pedals.

Therefore, it cannot achieve stepless adjustment to the deceleration rate during the braking process.

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