The Research on Aircraft Anti-skid Braking Switching Control with Road Online Identification Based on Fuzzy Algorithm

Abstract

Aircraft anti-skid brake determines the safety, efficiency and comfort of braking directly. Under the same road condition, different slip rates will lead to different adhesion coefficients between tires and roads, and the optimal slip rates of different road conditions are different. In this paper an aircraft anti-skid switching control system with road identification based on fuzzy algorithm was proposed. Non-linear model of aircraft all-electric brake system was established, and according to typical road conditions, the optimal slip rate of road surface was identified online through fuzzy reasoning, then the anti-skid braking control is carried out by using fuzzy and PID switching control algorithm. The MATLAB simulation results show that the system can identify road conditions online and adjust braking force in real time, which can keep the optimal slip rate, shorten the braking distance and achieve smooth braking.