Aircraft Antiskid Braking System Simulation

Since aircraft appeared, its reliability and security are always attended and studied abroad. As an important airborne device of aircraft, aircraft anti-skid braking syetem plays an important role in safe landing. So the study on it never paused all the way. Hawever, because of the accretion of airplane carrying capacity, intrinsic research production cannot meet the desire for requirement of uptodate plane designing. Therefor, modeling and digital simulation study on airplane ABS are developed in this dissertation.For making availably progress in centric content, some basic theory and analyzing means used in the dissertation are introduced.Thereout, the influence of airplane machinery characteristic, landing condition and some uncertain complication on airplane braking system performance are analysed and expaliated home. Subsequently, the undercarriage dimensional dynamic model, tyre dimensional dynamic model, servo-valve model, braking device model and tyre/runway adhesion coefficient model are based. Synchronously, on the basis of the mathematics models made, digital simulation models are created, depending on SIMULINK software.Eventually, compinded with the PUD press adjust controller designed, airplane anti-lock braking system model is created. Digital simulating experiments, analysing experiment results and study undercarriage machinery characteristic are made. The influence of tyre machinery characteristic, crosswind and main wheels respective brake on airplane braking system is investigated.Simulation result indicates that those models imitate the dimensional dynamic process of airplane braking slide. It has great significance to the design and study of airplane anti-skid braking system.