【摘要】 飞机防滑刹车控制系统是重要的机载设备,对飞机的安全起飞和着陆有着重要作用。NASA研究数据表明,传统的PD+PBM控制律在混合跑道刹车性能下降,且在低速段容易出现严重的打滑现象,导致系统刹车效率降低。对飞机防滑刹车系统的工作原理进行了分析,针对传统控制律的不足,提出了一种基于免疫PID的新型刹车控制策略。在计算机建立的飞机模型基础上,把刹车控制单元接入仿真回路,建立了半实物仿真系统,并将所提出的控制策略在变结合系数跑道上进行了刹车模拟试验。试验结果表明,该控制策略很好地改善了传统控制律的不足,有效地抑制了机轮打滑,大大提高了系统的刹车效率,缩短了刹车距离。更多还原

【Abstract】 For aircraft,anti-skid braking control system is important airborne equipment,and it plays very important role in safe takeoff and landing.According to the results of NASA research,the performance of traditional PD+PBM control will degrade on complex runway,and the wheel appears excessive skidding when the aircraft velocity is low,which cause the aircraft reduce braking efficiency.The working principle of aircraft anti-skid braking system is analyzed,and proposed a new control algorithm based on immune PID for anti-skid braking system.Based on the aircraft model in the computer,the brake control unit is connected to the simulation circuit to form a semi-physical simulation system,and the proposed control strategy was tested on the runway with variable coefficients in the braking simulation.The results of semi-physical simulation indicated that the control strategy is good to improve the deficiencies of the traditional control law,greatly improves braking efficiency and shortens braking distance.更多还原