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。
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.
出处
《控制工程》
CSCD
北大核心
2011年第5期743-747,共5页
Control Engineering of China
基金
北京市学术团队建设项目(0020054R3901)
关键词
防滑刹车
滑移率
免疫PID
半实物仿真
anti-skid braking
slip ratio
immune PID
semi-physical simulation
